If variable exists stata

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August undefined, 2024

Web31 mei 2024 · I use a local macro to specify a varlist with multiple variables and want to check whether each of the variables in this varlist exists in the dataset I use. So as to get a quick overview which variables do not exist in the dataset. WebTo create new variables (typically from other variables in your data set, plus some arithmetic or logical expressions), or to modify variables that already exist in your data set, Stata provides two versions of basically the same procedures: Command generateis used if a new variable is to be added to the data set, whereas replace, obviously …

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Web6 sep. 2024 · replace var = x if strpos (name, "_____________")>0 or looking at your previous posts, if you are using non-English text, Code: replace var = x if ustrpos (name, "_____________")>0 would probably be a better choice, and would work in either case, while strpos will only work with single-byte characters. WebIf the variable exists but is not numeric, Stata displays the message ’varname’ found where numeric variable expected or ’’ found where numeric variable expected with a return code of 7 if varlist is not speciﬁed. confirm string variable speciﬁes that all the variables are … cgfi waterproof covers

Rename variable if variable exists - Statalist

WebStata tries to protect you from losing your data by doing the following: 1. If you want to save a file over an existing file, you need to use the replace option, e.g., save auto, replace . 2. If you try to use a file and the file in memory has unsaved changes, you need to use the clear option to tell Stata that you want to discard the changes ... Web12 jun. 2015 · I believe that it's considered good programming form to put the expected outcome first in an if-else section of code. For example, here, if you expect that most of the time the variables will exist, then put the error-free condition if !_rc { first (as illustrated). WebIn the dataset, the variable id is the unique case identifier. To add the duplicate observations, we sort the data by id, then duplicate the first five observations (id = 1 to 5). This leads to 195 unique and 5 duplicated observations in the dataset. c. g. five

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Web19 sep. 2014 · Checking variables' existence using Stata. I have already asked a question how to check for a variable's existence. Nick Cox answered it. Then I tried to modify the answer and to use a foreach loop, but it did not work: foreach var in var1 var2 var3 { … Web14 okt. 2024 · The syntax goes as following: * Run the regression (without constants) xi: reg OUTCOME i.GROUPVAR i.OTHERVAR, nocons noomit * Create local with all variable names used in the estimation (i.e. this does not include omitted variables) local regvars : … hannaford pharmacy gurnet road brunswickWeb26 apr. 2024 · Is there a way to ask Stata to check whether a variable exists and then rename it if it does? Essentially, I want to do the following: rename (start_year startYear yearStart) (beginYear beginYear beginYear) without it returning any errors. Thank you, Krista Tags: None Nick Cox Join Date: Mar 2014 Posts: 30804 #2 14 Dec 2015, 08:35 c.g fixings ltd

"Web19 aug. 2014 · Check if variable exists in Stata. I am looking for a way to check whether a variable exists in a Stata dataset, and if not to repeatedly check variable names over a loop until I find one that exists. I am aware of the other responses to similar questions … " - If variable exists stata

If variable exists stata

Web16 jul. 2024 · Rename variable if variable exists - Statalist. You are not logged in. You can browse but not post. Login or Register by clicking 'Login or Register' at the top-right of this page. For more information on Statalist, see the FAQ. Posts. Web6 mei 2024 · Generating a New Variable based on Conditional IF Statements. 26 Mar 2024, 06:15. Hello STATA Experts: I am trying to create a new variable based on the existence of certain conditions in two existing variables (see code below). It appears to be dropping …

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Web1 apr. 2016 · The actual loop is much larger. I am deleting around 200 variables. The problem is that some variables change name over time, or disappear after a few years. Other variables are added. Therefore, the loop stops as soon as a variable is not found. …

WebWhilst there are a number of ways to check whether a Pearson's correlation exists, we suggest creating a scatterplot using Stata, where you can plot your two variables against each other. You can then visually inspect the scatterplot to check for linearity. Your scatterplot may look something like one of the following: WebUsing IF with Stata commands Stata Learning Modules This module shows the use of if with common Stata commands. Let’s use the auto data file. sysuse auto For this module, we will focus on the variables make, rep78, foreign, mpg, and price. We can use the keep …

WebA simple way to see which variables satisfy some property is just to loop over variables, examining each variable in turn. Spelling this out in a kind of pseudocode, 1. initialize list of desired variables to empty 2. for each variable that exists {2a. check whether it has the desired property 2b. if it has {add name of variable to the list}} Webst: How can I check that a variable exists? From: "Benjamin Villena Roldan" Re: st: How can I check that a variable exists? From: Sergiy Radyakin Prev by Date: Re: st: How can I check that …

Web21 nov. 2024 · How to check that a variable exists. I would like to know whether a variable exists or not. I am currently using the following code: foreach var of varlist q1 q2 q3 { capture confirm variable `var'_e if !_rc { display "`var'_e exists" } else { display "`var'_e …

WebDear statalist, This may sound like a trivial question, but I unsuccessfully looked for an answer so far. I need to perform certain action A if there is a variable XA defined in the dta file, and an action B if there is a variable XB in the dta file. How can I do so? Any ideas? cgf joignyWeb22 jul. 2024 · will list all variables that are not string variables (str# or strL). Subsequently you may use the variables in r (varlist) to recode the variables you want to recode. Dick Campbell Join Date: Apr 2014 Posts: 279 #3 22 Jul 2024, 14:47 Oh my, I had completely forgotten that command. Thanks. Richard T. Campbell hannaford pharmacy hampton nh phone numberWeb26 jun. 2015 · if ( ($ {#var [@]})); then echo '$var (or the variable it references for namerefs) or any of its elements for array/hashes has been set' fi For ksh93, zsh and bash 4.4 or above, there's also: if typeset -p var 2> /dev/null grep -q '^'; then echo '$var exists' fi Which will report variables that have been set or declared. Share c. g. five songsWebAs in Episode 3, Stata lets us know that the file already exists and is unwilling to replace it. As we are using a .do file to create this file, it is totally safe to overwrite. If we make an error, we can fix it and rerun do code/read_reshape_gdp.do. That is the whole point of .do files; to make your work more reproducible. c. g. five musicWeb14 okt. 2024 · Check whether variable exists in if-conditions. In some applications, e.g. if you want to save coefficient estimates from a regression with many dummies (e.g. fixed effects), you might want to store coefficients as estimates. In this example, we are interested in storing the estimates of the GROUPVAR dummies, but not the dummies of OTHERVAR. cgf learn free.orgWebProgramming Language Stata Abstract checkfor2 is a routine to check for existence of a list of variables within a (usually big) data set. checkfor2 searchs through the data whether the variable exists. Suggested Citation Amadou Bassirou Diallo & Jean-Benoit Hardouin, 2005. cgfk schoolWebUsing IF with Stata commands Stata Learning Modules This module shows the use of if with common Stata commands. Let’s use the auto data file. sysuse auto For this module, we will focus on the variables make, rep78, foreign, mpg, and price. We can use the keep command to keep just these five variables. keep make rep78 foreign mpg price cg flashlight\\u0027s