Convert double to date in stata. Once installed, you can go .

Convert double to date in stata Confusions about conversion often seem to hinge on a misunderstanding about what format means, as format is an overloaded word in computing, referring variously to file format This could happen with a double variable, at least from what I understand. The former have dedicated codes for masks and do not accept the details codes of the latter. so changing the display format changes the Stata date type. Examples: Usually, you will want to convert str containing 2006. I would suggest using lubridate, which has a set of very easy to use functions to convert values to date or date-time. g. ss DD. stata. From: David Ashcraft <[email protected]> Re: st: Convert to stata date - stored as a numeric variable. Overall, I convert all variables (type mismatch) into "str". format statatime %tc. Join Date: Jan 2024; Posts: 3 #1 Convert from double to string to append multiple datasets 27 Jan 2024, 05:32. float is the default storage type. Despite only telling Stata a time, my time_due variable has a date in the entry. These variables am I using: dob1 (double, %tc) and scandate1 (double, %tc). [email protected]> wrote: > Hi, > > I have integer variable that is stored as double. Viewed 40k times if the example there were changed to (double)DateTime. Remarks and examples stata. It contains the passed days from 1899/12/31, with the fraction being the passed part of the day. Elapsed dates are calculated as the number of days from January 1, 1960. The HRF-to-SIF translation functions are typically used after importing or reading data. Say that we have date variable in the following format and we want to convert it to Stata format. Add month to quarter date. Hot Network Questions What do you call the equivalent of "Cardinal directions" in a hex-grid? Download a file with SSH/SCP, tar it inline and pipe it to openssl C# Convert Date To Double. This format is useful for adding or subtracting dates and changing the format of date variables. How Stata Stores Dates and Times. > > The All I know about these variables is that 1) their data types in SPSS were "Date," 2) SPSS treated them as scale data, and 3) all dates should be between January-May 2019 or January-May 2020. You might have the following date data in your raw data file. to_date(F. If you wish, however, Converting Between Date Formats. The only other noteworthy detail is that %d is no longer documented routinely as a daily date display format; in recent Stata Stata stores and saves date and time as numeric intervals referenced from 1 Jan 1960 (01jan1960 = 0) When the variable is time, one should use double variable type When variable is date, float is OK Stata help The above command is your best resource! Stata Internal Format (SIF) and Display Formats for time data [] I gave him a formatted double. I tried to change it to integer using recast int id getting message "id would be changed no changes made" if i use recast int id, force it gives all missing Any ideas how to change it to integer? This page lists commands you may find useful when working with date variables in STATA. gen double datetime = There is a way to convert Float value into Double without adding the extra precision. raw John 1 Jan 1960 Mary 11 Note that a date format here is just a display format to make a date intelligible to people; the date variable itself is numeric. BornToCode A daily date between 1 April 2014 and 30 April 2014 will display as 201204 when displayed with the format %tdCCYYNN shown in the initial post. 1/19/2015 11:33:00 AM After conversion, I can do: XXXXXXX - YYYYYY = ZZZZZZ I have been looking at a few documents on the use of the clock function, but couldn't hack it. When we are working on editing the tables, sometimes we want to transpose or Stata: Convert date, quarter to year. format wanted %tcHH:MM:SS . I found this post about it: Convert dates from Stata to R. I have tried to convert this double value to a long value then instanciate a Date object with the result, but I got errors saying that I cannot convert from double to long. I used the date() function to convert dates in string format to the "daily date" before but I failed to understand the logic of "monthly date". Convert date Stata tends to use scientific notation when there isn't enough space to show very large or very small numbers. x (output omitted). The date() function can convert virtually any date format into elapsed dates, which is the format Stata uses to manipulate date information. Both the old outmoded date-time classes as well as java. Dear Statalisters, When I try to append multiple datasets, I encounter a problem with different data types. I have tried destring: however, the : prevents the destring. In time series, the period should be converted into date type. Time Zone. Values can be numeric or strings. 4958333333. Now available on Stack Overflow for Teams! AI features where you work: search, IDE, and chat. This is all documented in detail: help datetime. I tried these different commands: dofc(dob1) format dob1 %tm personage dob1 scandate1, generate(age) datetime/c clock(str,mask) double datetime/C Clock(str,mask) double date date(str,mask) floatorlong weeklydate weekly(str,mask)* floatorint monthlydate monthly(str,mask)* floatorint quarterlydate quarterly(str,mask)* floatorint half-yearlydate halfyearly(str,mask)* floatorint yearlydate yearly(str,mask) floatorint To tsset or to xtset the data all that is needed are integer dates or datetimes. Before the process though, a bit of the theory behind it. This format is, in particular, sufficient to convert integers held as bytes, ints, or longs to string equivalent Re: st: tostring double wishlist; Next by Date: Re: st: wald test and ivreg; Previous by thread: Re: st I have a date and I need add to it some days. 2k 6 6 gold badges So in VBA, part of my process is to convert a date to a double. Improve this answer. gen date2=date(string(date,"%8. Join Date: Apr Forums for Discussing Stata; General; You are not logged in. My conversion was counting the dates on a daily basis: 01jan1999, 01feb1999, and so on. Learn more Explore Teams The word "format" is overloaded in computing, which isn't your fault, but note that in Stata double is a variable or storage type and not a display format. 511554592277516E9 Yet reading their documentation I can say that Stata tells us "date is a particular type of date" - which I think risks running afoul of Russel's paradox. Is there a Stata function to change string variable of dates (Month/ Day/ Year/ Time) to month/date/year and numeric? Hot Network Questions Mushy water-logged front yard, aerate? I have a date and I need add to it some days. Strings are stored as str#, where # indicates the maximum length of the string. YYYY. In some fields, a rough average of 365. For example: Code: clear input firm_id time value 1 1 3 1 2 4 1 3 7 1 4 9 1 5 13 1 6 15 end. 9884656743 10307 8. has been converted by Excel into the CSV file as the double: 42968. DateTime newDate = DateTime. 10. I have a double variable with value for example 27, how can I add it to my current date? Datetimedisplayformats—Displayformatsfordatesandtimes3 h half 1–2 q quarter 1–4 WW week 01–52 ww week 1–52 HH hour 00–23 Hh hour 00–12 hH hour 0–23 hh I'm looking to cast/convert a decimal data into date data. How to destring a time variable (7:00) using Stata?. 929e+12 1. Converting a double into date time. The SPC library unpacks said values from SPC as <d and converts them to float In Stata, we can generate customizable tables, descriptive tables, and estimation tables using table, dtable, and etable, respectively. The date varies around the world by time zone as a new day dawns earlier in the east. Dmitry As he indicates, one way to get a Stata daily date from your run-together date variable is convert it to a string first. The base (the numeric value 0) of a datetime variable begins at 01jan1960 00:00:00. Suppose date = 23jun2015 and time = 31dec1899 11:23:00 and suppose that I want to create a new variable datetime= 23jun2015 11:23:00. The way VBA does this is to basically count the number of days between the given date and 1 Jan 1900. 03. double days = (DateTime. Goining the other way may give you "noise" digits in the decimal You have the answer, but we'll spell it out for the benefit of any others interested. 70141173319 1038 10 38 4 double 8. I've looked online and am still struggling. 1. Use list to list data when you are doing so. See help datetime_translation under the section "the date function". I have the following dataset in Stata Id | date1 | date2 ----- 1 | 28mar2005| 30jun2005 2 | 28mar2005| 31dec2005 3 The dates in date2 are not repeated and are sorted within Id. I also have a separate string date that I was able to destring and convert to a double. exactly!" 3. The display format is, and is only, an instruction to Stata on how to display such integers. Describe your dataset. For dates on or after 01mar1900, Excel 1900 Date System stores dates as days since 30dec1899. Your variable year is misnamed, as it is a daily date variable. Nick Cox. From: David Ashcraft <[email protected]> Prev by Date: st: Convert to stata date - stored as a numeric variable; Next by Date: Re: st: Convert to stata date - stored as a numeric variable; Previous by thread: st: Convert to stata date - stored as a numeric variable In order to calculate this, I read the datetime pdf's, this forum and I downloaded the file "personage" from Nick Cox. 13 14:23 to a Stata datetime/c or datetime/C value and convert str containing 2006. I'd recommend using the function daily() rather than date() to underline what is happening. I have a double variable with value for example 27, how can I add it to my current date? st: Convert to stata date - stored as a numeric variable. Modified 2 years, 10 months ago. 25 days per year is considered close enough. From: Nick Cox <[email protected]> Prev by Date: Re: st: Convert to stata date - stored as a numeric variable; Next by Date: Re: st: bootstrapping question I receive input in double (Eg: 12803. Now. 917e+12 1. I tried using the two commands: destring index, replace index already numeric; no replace encode index, gen (in2) not possible with numeric variable But none of them worked well. The resulting converted datetime is not equivalent to the input. See age2. (date) == 10 * Convert from string to numeric date Since your double represents the number of seconds of you date from now, and the Date constructor in Java is expecting a number of milliseconds since 01-01-1970, you have to multiply your number to get a number of milliseconds (* 1000) and substract that from the current number of milliseconds since 01-01-1970 (System. generate daten = date(dob, The second argument is the order of the month, day, and year specified with the letters M, D, and Y in double quotes. regress y x l. But in recent versions of Stata, there is a function age() which does that directly, and is smart about leap years. 1 and I have a variable containing date and time. Viewed 2k times I have a data set that was created in Stata that looks like this: Car Date BMW 19057 SAAB 19169 Volvo 19295 I want to convert the dates from the Stata-format to R format (integer is fine). If I assign it date format %td, %tm, %tq I get shown different dates, but at most one can be correct, as I changed nothing except the display format: datetime translation— String to numeric date translation functions 3 Introduction The HRF-to-SIF translation functions are used to translate string HRF dates, such as “08/12/06”, “12-8-2006”, “12 Aug 06”, “12aug2006 14:23”, and “12 aug06 2:23 pm”, to SIF. Share. conf file into a variable located in a separate . Convert DD/MM/YYYY: gen numeric_date=date(string_date, “DMY”) Convert YYYY-MM-DD or To convert SPSS datetimes to Stata datetimes, type. My date variable is a monthly time series starting on January 2000 and formatted as "2000-Jan". tsset time (output omitted). Convert to a numeric date String (text) date Numeric date 2. Convert quarterly data to monthly. The command to convert period into date type is: generate period2=date(period, "MY", 2020) The date function takes 3 arguments. Commands include extracting different date components (such as day, month, year), converting from one date frequency to another (e. In one of the columns, there is a date, but it is in the "general" format, so it shows up in the . Storage types affect mainly how much memory will be needed. Stata: date comparison in double. parseDouble(s); This Approach will not add an extra precisions to your Float value while converting. raw Bill 21Jan1952 22 There are better ways to set that sequence, but being my first exploration with date/time formats, it worked out. Ask Question Asked 2 years, 5 months ago. For the details, see [R] egen. Basically, computer time is zeroed to 01jan1960 00:00:00 I am trying to write code to convert date-time columns date and last_updated_date which are actually unix times cast as doubles into "mm-dd-yyyy" format for display. And any collect commands can be used after producing a table to further customize it. To convert with a one-second resolution to a Stata datetime,. C# Winform charts, zooming and scale of x axis displaying date and time. N. With that speci-fication, date() can convert November 21, 2006, 11/21/2006, 11212006, and other strings that contain dates in. The Unofficial Reddit Stata Community Consider going instead to The Stata I have a double variable - date_num that contains both the the challenge is no different from some twisty little thing in childhood that hinged on your understanding the need to convert miles to feet or kilometres to metres or the other way round or Date-time formatting features. Based on other dates in the dataset, they should be in yyyy-mm-dd hh:mm:ss format. Solution: gen dob_ymd_nn = date(dob_ymd,"DMYhm") format dob_ymd_nn %td Thank you. toString(); Double aDouble = Double. 0g. numdate monthly mdate = mystring, pattern(YM) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog In fact, Stata understands a date and time variable as the difference from the base. FromOADate(currentDate); but it through an exception . 00798176898598356 The date() function can convert virtually any date format into elapsed dates, which is the format Stata uses to manipulate date information. Trouble obtaining quarterly values from a date variable in stata. Clyde's code instructs us in a general approach: initially convert whatever you are given into a SIF date of some form (a daily date in this example), then use Stata SIF-to-SIF conversion functions as required to convert that SIF date into the SIF date with the periodicity you need (a quarterly date in this example), and then apply the appropriate format to that result. set obs 1 number of observations (_N) was 0, now 1 . Hot Network Questions Write the contents of a . Hot Network Questions Why does it show 2 vertices under each other when in edit mode? The trick to inputting dates in Stata is to forget they are dates, and treat them as character strings, and then later convert them into a Stata date variable. When I try to append multiple datasets, I encounter a problem with different data types. The right solution, as Nick has often pointed out here, is to qualify "date" as "daily date" and preferably to change documentation examples - at least for help datetime and its String to numeric date translation functions (help datetime_translation) should not be confused with display formats for dates and times (help datetime_display_formats). com, and user-written Stata programs available on the Internet (if you have Stata 12 or earlier, you can use findit to search all these sources at once) Stata stores dates, times, and dates and times as integers such as −4,102, 0, 82, 4,227, and SeeWorkingwithtwo-digityearsin[D]Datetime conversion. Masterov Sent: Monday, July 22, 2013 2:39 PM To: Statalist Subject: Re: st: converting date format If your date is stored as a string, you will need to convert it to Stata date format first: . When a variable will be used in a long series of calculations, each of which adds a bit of truncation or rounding error, or where the calculation combines numerical values of greatly different magnitudes, then a double is If your dates are proper Stata daily dates, then you need to subtract one from the other, and convert to years, rounding down. Excel, 1900 date system. (I have nothing against tostring, as its original assigning a particular date display format defines a Stata date . How You can convert the string to a Stata "datetime" date using the clock() function: gen double datetime=clock(yourstring, "YMDhms") Then you can extract the date using the dofc() function, the hour using the hh() function, minutes mm() and seconds ss(). I have several variables of the form: 1 gdppercap 2 19786,97 3 20713,737 4 20793,163 5 23070,398 6 5639,175 I have copy-pasted the data into Stata, and it thinks they are strings. 000 (the first millisecond of 01jan1960); therefore “25jan2016 08:30:25” for us human beings will be 1769329825000 (milliseconds) for Stata. Stata stores a date as a number: most commonly the number of Note that a string date and a numeric date-time variable with appropriate date-time format %tc just look the same when you list them, but they are quite different beasts. gen double statatime = (spsstime*1000) + tc(14oct1582 00:00) . Ask Question Asked 11 years, 5 months ago. Here, all the types have a resolution of 1 microsecond / 14 digits except date type, whose resolution is day. The first argument must be a string. Let’sconsidersomedailydata. CSV file which I am reading into a C# program. col("old_col& Skip to main content Converting Double type column to date format type pyspark retuning. Extract only quarter from a date in r. gen double wanted = timeinsecond * 1000 . Convert the string to a numeric date/datetime (A) 3. No need for you to be writing your own formatting code. Created Date: 6/8/2013 Datetimevaluesfromothersoftware—Dateandtimeconversionfromothersoftware Description Remarksandexamples Reference Alsosee Description The two variables in my panel data-set, "index" and "year" are being identified as "long" type data but I want to convert them into "double" format. is to be prefixed with 19. The main solution remains what it was long before software, to change units of measurement or numbering -- to work in millions or billions, say -- and as a valued side-effect or even goal to see only defensible numbers of significant figures (mathematical or From Indu Khurana < [email protected] > To [email protected] Subject Re: st: How to convert exponential format into numeric values in stata: Date Tue, 1 Mar 2011 11:56:37 -0500 <> But the connection to the "-" sign is simply not there. I suggest you look into them. 795 10 8. 0 in your double correspond to one second, one day, etc? There are a few standard ways to do this: unix time and julian date. If you use a conversion package, most know to convert the date for you. Your code with a positive large number causes the exact same effects: ***** clear set obs 1 gen double x The date() function can convert virtually any date format into elapsed dates, which is the format Stata uses to manipulate date information. Format the numeric date Brought into Stata with import excel, import sas, or import spss, you’re all set Brought into Stata from a . txt file You have a date variable 1. How to convert numeric date to Stata date. My Stata variable dob_dmy shows date of birth of participant. Now Dim newdo as Double = currentDate. Precision for double is 1. gen double statatime = round((exceltime+td(30dec1899))*86400)*1000 Dim currentDate as DateTime = DateTime. my timestamp double values are in this format: 1. C# Charting zoom problem with DataTime for X axis. Stata--Dates Conversion. pack(‘<f’, value))/any other unpack and pack matryoshka doll I can conceive doesn’t work because of the difference in byte size. (you continue to use Stata and, sometime later:). 922e+12 . 37. Converting Double type column to date format type pyspark retuning. There is a way to convert Float value into Double without adding the extra precision. Hot Network Questions On a sheet of choir music, how do you interpret two notes represented by two heads on a single stem? I’m working on a TXT to SPC converter, and certain values have to be stored as hex of double, but Python only works with float and struct. If you are getting "21186", that's the Stata format for date, not date and time. Again, this all boils down to the user's unfamiliarity with how Stata stores dates in SIF and displays dates in HRF, and not understanding that a six-digit number that looks like a date is not usually usable as one in Stata. Unable to convert this double value into Date format like "10/11/2016" I try to use . Can you help? "value" is a double precision, and here I convert it to varchar. TotalDays to get the number of days between two dates:. When does it cross zero, does 1. 22 decimal digits) and double is 53 significant bits (15. I used this function: df. Convert double to date using SparkR. I think there's some concern with the original intent of the function (ie: to support OLE Automation), but if the consumer of the double uses the documented values, then there's no problem in re-using that function. Login or Register. B. Convert double to date. currentTimeMillis()):. > Hello, > > I am using Stata 12. In response to your second question, an easy way is to simply translate the current values into "normal" dates is to use the lubridate package. Log in with; Forums; FAQ; Search in titles only. double myDouble = The Stata date function is smart about removing separator characters. From Maarten Buis < [email protected] > To [email protected] Subject Re: st: Converting date/time string to proper date/time variable: Date Fri, 30 Aug 2013 17:08:53 +0200 "Say exactly what you typed and exactly what Stata typed (or did) in response. The problem. list How to convert date in Stata? 1. Wehavethefollowingraw-datafile: beginbdays. Ticks the precision is not lost. 70141173319 1038 1. Description recast changes the storage type of the variables identified in varlist to type. An expression "double format" can be translated mentally, but using Stata terminology in a Stata question is always the best idea. However, in the data browser, Stata attached a date to the entry. c#; datetime; Share. Thanks, Bill (and Martin, second post). I am converting a vector of strings of the following format "MM/DD/YYYY HH:MM:SS" to a Stata recognizable datetime using the clock() function. So 19 Mar 2014 would be a double value of 41,717. This is a number that people cannot interpret, but Stata provides display formats so that displayed dates are intelligible. Am I missing that I could be st: Convert to stata date - stored as a numeric variable. You can convert dates from one format to another using one of a set of conversion functions. Format the numeric variable (B) Brought into Stata from a . Modified 2 months ago. To convert to a Stata date, When letters and such are in the string, it doesn't make sense. Text; DateTime enteredDate1 = DateTime. gen statadate = exceldate + td(30dec1899) . 1. Converting dates from Stata to R. 13 to a Stata date. Thus, when importing the dataset into R, I end up with a vector of dates of the form: > c(478, 479, 480, ) In addition, my date Title stata. Use the advanced editing options to appropriately format quotes, data, code and Stata output. Our string dates list the month first, the day second, and the year third. Follow edited Mar 20, 2019 at 10:26. Improve this question. In your example, ddnn20Y is a display format detail code and thus not a valid mask for the date() date(s1,s2[,Y]) Description: the e_d date (days since 01jan1960) corresponding to s1 based on s2 and Y s1 contains the date, recorded as a string, in virtually any format. This is feasible because table/dtable/etable are implemented using collect. time classes offer formatting features. To be filed away for the next conversion. I'd like to convert this variable to time/date format. Not a legal OleAut date. Getting Wrong date format as result in R. ToOADate(), which is a OLE Date Time). I want to convert a double value into a date String firstdate =startdate. Stata to Excel: Keeping the time variable correct. Absolutely not! For example, suppose I have a number 42. I don't seem to find a way, so any help is very much appreciated. 4. gen timeinsecond = 12192 . Numeric values are stored as five types differing in range and accuracy: byte, int, long, float or double. withColumn( "new_col", F. format date2 %td Then convert it to float and double don't store decimal places. Real-life data can come in a variety of formats. Thanks. The context is that I earlier wrote destring (with help from William (Bill) Gould) and have often needed it myself ever since and it seems to be used quite often. Often your first task is to convert the dates and times in your data set to Stata format, and most of the time everything after that is easy. Overall, I convert all variables 2. However, it does not work for a variable containing information about time, for example: 09:45. -Marika Tags: None. By contrast, the unprofessional approach is to skip the important work of understanding the problems in the Excel worksheet and correcting them in Excel or replacing those values in Stata, and will instead use the force option on the destring command to cause any and all non-numeric values to be replaced by a Stata missing value, and will as a * Example generated by -dataex-. – I want to: remove a character from a string and then convert that (long) string to numeric format, not. 02. I then tried destring, ignore(:) but was unable to then make a double and/or format %tc. If your dates are in v1 and in the form yyyy-mm-dd you can specify the commands:. No, that's not going to work because d is now a numeric variable and there is no sense at all in which it may contain the string "apr2022". You just need to change the display format so that these show up as dates. I have a need to convert Stata dates (currently in %td format) to numeric variables showing year and month YYYYMM. unpack(‘<d’, struct. 1551505093 as datetime) Output for the query is 2019-10-06 03:43:25. But here it seems that you have no observations over most of the day, i. If I assign it date format %td, %tm, %tq I get shown different dates, but at most one can be correct, as I changed nothing except the display format: Hello, I have a string variable (str10) which I want to convert into date so i can add and subtract days. Bill mentioned to me, either then or at some other time, that if an operation and its Dates and Times Data types and storage types. I have a . 2. Clyde Schechter. 929e+12 2 1. 0. Hello all, I have a variable titled "Trav_Date" in the following format "M/D/YYYY H:MM:SS AM. The only Problem with this approach is memory usage of the JVM by creating How to convert in modern C++ (C++11/14/17) a double into a date time using the date. conf file Time travelling paedo priest novel The variational derivative of the metric with respect to inverse metric How to get a horse to I am having an issue with converting a double to a Java date object in the format: yyyy-MM-dd HH:mm:ss. Login or Register I was not able to find any suggestions online or in the statalist (either old or new). But tostring is just one way to do that and not essential. I have a need to store dates as strings and can't seem to find an easy way to do this. How can I convert it to a date/time (YYYYMMDDhhmmss) variable like the following: help datetime explains the basics here. For example, to convert sd1_date from a regular date with days as the time unit to a monthly date, use There are two steps involved to convert the numeric variable to Stata format. Type help datetime to get started. csv or . h library, when the double has been generated while exporting an Excel worksheet as a CSV file? For instance, the datetime appearing in Excel: 21/08/2017 11:54. For example: 41172. Now, I do doubt that the OP actually needs a double, and could use the object directly as is. TotalDays; If the DateTime has a time component it will be represented as fractions of a day, so for example: // current date and time (16:24:15) (new DateTime(2014, 3, To convert to a Stata date,. Use a conversion function (F) 2. 003 The most Stata-ish way, from my personal view, to achieve this is by converting the string to a Stata time/date format, and years from this, as presented in the following minimal example: (timestamp,"DMY hms") format time %tC // create date variable from string generate double date=date(timestamp,"DMY hms") format date %td // etract year With nothing else said, your syntax implies that your variable month (and any clone thereof) is a Stata monthly date variable, and thus follows the Stata rule that monthly dates are counted relative to an origin 0 in January 1960. Dates are counted according to the Gregorian calendar. A way of doing this in one is numdate from SSC. Use an extraction function (E) Numerically encoded dates/times brought into Stata How dates work in Stata 1. Cox's 'Speaking Stata: On numbers and strings'. However, I can't get my calculation right. Text; String lastdate = enddate. Search in General only Advanced Search Join Date: Mar 2017; Posts: 107 #1 convert long string to numeric (not exp Doubles can store up to Convert date time to double in c++. Welcome to Statalist, Martin. com recast — Change storage type of variable SyntaxDescriptionOptionRemarks and examples Also see Syntax recast typevarlist, force where type is byte, int, long, float, double, str1, str2, :::, str2045, or strL. 5. 85'" . How convert Mon. This was Hi, I have integer variable that is stored as double. WriteLine(newdo) // output: 43742. e. txt file, with values representing those used by another software You have dates/times 1. Reply to comment. But I cannot use Stata to do this since I got the data files exported from Stata to csv. Date Tue, 29 Oct 2002 09:00:49 -0000: Only when you force Stata to deal with the string equivalents will Stata treat "+" as meaning concatenation. Convert date field to Quarter in R. I now realized that if we want STATA to deal with time we have to convert the string variable representing date into "STATA internal form" (count of seconds, days, months or years from 1960) first and ALTER TABLE table_name ADD column_name Date; As shown above, PostgreSQL supports a full set of SQL date and time types, as shown in the table below. I have data with dates as: ID Date1 Date2 1 1. How can I extract month name and quarter from a date in Excel? 2. Convert Double to Datetime including milliseconds. " The variable is a string. With To convert between missing entries, use two functions, going through date or datetime as appropriate. To install: ssc install dataex clear input str10 Date double FX_vola "'28. These are: tostring date, gen(datevar) gen date2 = date(datevar, "YMD") format date2 %td So here I share the codes to convert various string dates to STATA format dates. From that point on, I've tried using convert but I'm still unable to get a Convert dates from Stata to R. The integer 1000 will convert to 1 second (1000 milliseconds = 1 second) after the appropriate formatting. clear . How to extract quarters from dates? 22. Once installed, you can go . I want to Therefore, Stata offers tools to turn these date strings into values that, while still displaying sensical data to humans, are encoded in a numeric format that Stata likes. Format the new variable (B) You want to You want to extract a portion of change units the date/datetime 1. 414 10 16. Multiplied with 86400 I get the seconds and from that finally the day's time. To get where you want to be -- with a monthly date -- you convert from clock (date-time) to daily to monthly: Managed to answer the question, though not by using 'help datetime' (already did that) or by reading N. Your particular display format suppresses display of the year, but it is still there as part of Stata's I have a dataframe with double column (20180310), i want to convert it to Date format (2018-03-10). Multiplying by 1,000 converts David, Try: . To convert the date-time to a double, you need to decide how that double is defined. The first is the variable you want assigning a particular date display format defines a Stata date . 0f"),"YMD") As per a recent thread, you could also use Nick Cox's -todate-. 08. Converting dates is easy to do. Any advice? ***** BEGIN ***** clear all input str9 date_text1 "28mar2008 I am trying to combine a date and time variable into a date/time variable in Stata. The only extra twist is that your date-times arrive as a double, so you need to convert to a string, which can be done on the fly. 000000) which represents time in hours:minutes:seconds, ignore the values after the dot. Similarly to R, Stata handles dates as integers but in the latter January 1960 is origin zero for monthly dates. I have tried the following code. . For example: If you cut-and-paste the spreadsheet into Stata’s Data editor, dates and datetimes paste as strings in human-readable form. Let’s use an example. Auto format DateTime axis for MS chart control? 0. > I tried to change it to integer using > > recast int id > > getting message Next by Date: Re: st: RE: RE: Stata 9 Mata question; Previous by thread: st: double to How to convert numeric date to Stata date. temp_12799_1544635391843_482 This string variable Clyde's code instructs us in a general approach: initially convert whatever you are given into a SIF date of some form (a daily date in this example), then use Stata SIF-to-SIF conversion functions as required to convert that SIF date into the SIF date with the periodicity you need (a quarterly date in this example), and then apply the I am having an issue with converting a double to a Java date object in the format: yyyy-MM-dd HH:mm:ss. I was not able to find any suggestions online or in the statalist. Convert the string to a numeric date/datetime (A) String (text) variable Numeric variable 2. I get a date/time as double value from C# (DateTime. The format of date is %tdNN/DD/CCYY and the format of time is %tcHH:MM:SS. Ah, dates and time in Stata. mm. Follow edited Nov 17, 2020 at 18:38. Database unfortunately added time (all read 00:00). Converting from double to float will give you the closest possible float, so rounding won't help you. 901e+12 3 1. +------------ How can I make my sytem date which is saved as double format (%tc) to long (%tdnn/dd/YY). encode does not work; recast does not do the job. generate v2 = date(v1, "YMD") format %td v2 The YMD is called a mask, and it tells Stata the order in which the parts of the date are specified. Type: format startdate2 %td-- Note that this isn't the format that you want since you seemingly want date and time ("datetime datetime— Date and time values and variables 3 In the remaining text, we will use the following notation: tc: a Stata double variable containing SIF datetime/c values tC: a Stata double variable containing SIF datetime/C values td: a Stata variable containing SIF date values tw: a Stata variable containing SIF weekly date values tm: a Stata variable containing SIF monthly date Date strings such as "19jun2015 16:52:04" can be held in Stata as strings but to be useful they need to be converted to double numeric variables which hold the number of milliseconds since the beginning of 1960. Convert Time into Double. -egen, concat()- bundles into one command concatenation when all you need is to convert any numerics via string. Forums for Discussing Stata; General; You are not logged in. Convert the numeric date to a numeric variable corresponding to Stata’s base To hold a Stata clock or Clock variable you must use a double or you will incur significant and easily noticeable errors. How would I say write a Thank you! Darrell Bosch -----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Dimitriy V. So 20 hours would be 1000*60*60*20, and so on. only 6 hr 30 min of observations each day and 17 hr 30 min of gaps. Now I see what was happening. Time zone is crucial to determine the date. 11); String s = aFloat. Before I can do this I need to ensure the storage types are the same for the reference variables that I am using to join the data sets, a gen double time_due = clock("12:00 PM", "hm") format time_due %tchh:MM:SS_AM In the assign1_submission that I imported from MS Excel, the variable only contained a time. convert number to date 13 Jul 2024, 10:05. The Date variable (not column in Stata terms) is already a numeric variable formatted appropriately as a daily date. I would like to convert the following date and time format into Stata format, so that I can performance subtraction between two date and time to find the interval. So, the date() function complains because it expects a string variable name or string expression as first argument. Float aFloat= new Float(0. Here is the code that I've used, gen datetime = clock(dt, "MDY hms") format datetime %tc We can convert string dates to date data using Stata's date() function along with the generate command. Thus 1 is February [1960 also], and so on. You got the command to change the string "human readable format" date and time to a Stata Internal Format (SIF) clock value correct. format statadate %td Excel can store dates between 01jan1900 and 28feb1900, too, but the formula above will not handle those two months. For example, quarterly of monthly is tq = qofd(dofm(tm)). ToOADate() Console. Date is converted to numeric when iterating in R. 1551505093 Then if I convert following double value to DateTime in SQL Server it shows me date which is two days in advance: select cast(43742. gen date2=date(date,"MDY") . Getting the date however is harder. This is not hard to do but you should be aware that %tc is for date/time order of month, day, year. Time Series Stata date convert daily to quarterly returns scientific notation. Your questions have to do with some fairly basic Stata date and string functions. CSV as a number. They store binary places: float is (assuming IEEE 754) 24 significant bits (7. YY to This is a question for Stata Corp, but for historical is specified, tostring uses the format %12. If your categories are simply dates in April and May 2022, then gen indicator = dofc(d) >= mdy(5, 1, 2022) will be 1 if datetimes are in May 2022 (or later for that matter) and 0 if they are in April 2022 (or earlier). the online help for Stata; Stata's search command, which can tell you about all built-in Stata commands, all ado-files published in the Stata Journal, all FAQs on the Stata website, www. Open to solutions within Stata or using different software. How to convert double to minutes in VB. Today - new DateTime(1900,1,1)). Convert Time stored as integer to datetime. Disclosure of interest: I first wrote tostring although it was folded into official Stata a while back, within the life of Stata 8. . Related. I have data that is monthly but not labeled. C# DateTime: Scaling Double to Time. Follow edited Dec 31, 2020 at 17:10. Convert DateTime to Double. 511554592277516E9 tsset handles both requirements. 00748233664630325 "'29. 95 significant digits). MM. Use input to type in your own dataset fragment that others can experiment with. It's the same code under different guises. The post also gives a few examples that are helpful in converting Hi, I have a date/time variable that is a string and looks as follows: hh. daily to monthly date variable), and some other related commands. x not sorted r(5); I have two datasets I would like to merge using Stata 15. AddTicks(1000). Parse(firstdate); Is there a way in Stata to convert all numeric variables to display more numbers as opposed to scientific notation? stata; data-wrangling; Share. When I bring in the dataset using "import spss, "the two variables come into STATA as type: double and format: 10. Subtracting two DateTimes gives you a TimeSpan. answered Dec 31, 2020 at 16:19. All I want is to convert this double value to something like 1:28:03 as in HH:mm:ss format using java code. You can just use TimeSpan. Your question is a bit confusing, because you do not tell us what the variable date2 is. type dates1. Format the numeric variable (B) Stata formatted date/datetime 1. First, let's put your If a date variable has a display format %td it must be numeric and stored as some kind of integer. 9884656743 10307 10 323 8 Precision for float is 3. You can browse but not post. This variable is in "double" in some datasets, "int" in some datasets, and "str" in some others. com Closest to 0 Storage type Minimum Maximum without being 0 Bytes byte 127 100 1 1 int 32,767 32,740 1 2 long 2,147,483,647 2,147,483,620 1 4 float 1. Working with dates and times in Stata 1. What I tried Long Date Format to Stata Date Format 03 Aug 2015, 08:50 I have trying different options to convert the following Excel long date format to Stata date format, but so far no luck. Moving from dates to Stata dates is a three step process. In this post, I would like to show how to convert a numeric date to Stata date. I think it's best if you import dates as strings (or perhaps even numbers) and then convert them to date format. As you use Stata, however, you may later use a command that re-sorts that data, and if you do, the time-series operators will not work:. Convert quarter/year format to a date. qmiuu kvuid dmrv jgqw bomwp iyvxt hwxhi cskyz zshwsns vlfphz