Stata Drop If Variable Contains

When you initialize the use of variable lists Stata will automatically create four variable lists called the System variable lists. If the code from urandom_stata_user doesnt work you have to do better describing your problem.

Handling Missing Data In Stata Youtube

The note contains a list of commands and let Stata execute all of the commands that you have written in the note.

Stata drop if variable contains. - want to keep the variable var1 in your dataset. So to be clear the panel data contains the following variables. Keeping and dropping variables.

Clearly we will not learn anything from that variable so we can drop it. Using IF with Stata commands Stata Learning Modules. For example Suppose that female is.

In this case 1 the stub should be inc which is the variable to be converted from wide to long 2 i is the id variable which is the unique identifier of observations in wide form and 3 j is the year variable that I am going to create it tells Stata that suffix of inc ie 80 81 82 should be put in the variable called year. An alternative way to find number of different values for a variable. Here I am dropping all the variables that were coded as Not Applicable for more than 95.

The name of the employee who processed it VVVN the date 25102019 and time 1011. Duplicates drop keeps only the first of the. If you want to drop variables use drop varlist.

Ideally the dataset would look like this with each reference as an identifyer and the other variables containing processing date time and employee if processing was not automated. I understand that you. Dropkeep - Removing columns using drop or rows using drop if.

The drop command is used to remove variables or observations from the dataset in memory. In the simplest case we have a binary variable recording whether for example persons are male or female unemployed or employed or whatever and some group variable like a variable recording a family identifier. 2100 storage display value variable name type format label variable label state str14 -14s State state2 str2 -2s Two-letter state abbreviation.

All Answers 15 Hi Rajan check out the Stata manual section on List variables matching name patterns or other characteristics. AAH DEAD substr is a function not a command. Many thanks Shehzad ----- Original Message ----- From.

Stata will know that it means if. This module shows the use of if with common Stata commands. 50 1980 Census data by state vars.

Load data while still in Stata Create a vector of ones Drop missing values and variables we arent using Start Mata. From wide to long id sex inc80 inc81 1 0 5000 5500. If you want to drop observations use drop with an if or an in qualiﬁer or both.

It cannot be used to set observations on a variable for a subset of cases to missing. Lets use the auto data file. Indicator for if cell contains the word or phrase.

9 6 Apr 2013 1543 size. This is a very brief summary of the commands covered in class. As always your advice is spot on and very helpful.

Drop Drop variables or observations 3. Has varlabel npb would. Drop variables x1 through x100 and regenerate.

You can also subset data as you use a data file if you are trying to read a file that is too big to fit into the memory on your computer. First you say 8 unique string variable then you say for this variable. Its easy to drop a number of a variable at a time this way.

Make sure the example you post reproduces the problem you are having and be sure to include the variables that occur in your -reshape- command in the example. Sunday 16 September 2012 1605 Subject. Without seeing your code we cant tell whether your code is incorrect your terminology is incorrect or both.

The line above therefore contains three variables. Generatevar creates a new variable var that gives the number of duplicates of each variable. These generally have to be non-negative.

If you are running version 16 or a fully updated version 151 or 142 -dataex- is already part of your official Stata installation. Variables which Stata thinks are categorical. Generate - Creating new variables using syntax generate.

Clear input str7 myvar venus mercury Jupiter mars saturn uranus Neptune end list noo drop if strpos myvar ur0 list noo HTH Martin -----Ursprüngliche Nachricht----- Von. It is sometimes that a dataset have too many variables that are not necessary. The drop command tells Stata to delete a variable column or cases rows from the dataset.

You can subset data by keeping or dropping variables and you can subset data by keeping or dropping observations. The syntax for dropping variable is simple. Remove part of string variable if it contains a word Dear Statalist members I am trying to remove a part of my name variable if it contains DEAD.

For this module we will focus on the variables make rep78 foreign mpg and price. Every numeric variable in the current data set is automatically placed into one of these four lists. Statalisthsphsun2harvardedu Cc.

You absolutely must have a look at the online help for the command you need to figure out whelp command and you should consult the manual for a more extensive understanding of how a given command works as only very basic usage is given hereThe notation sort of follows the Stata. Use the -dataex- command to do that. Use the dummy variable without explicitly specifying the condition but with the variable name alone.

See -help ifcmd- and -help if-. This note in Stata is called do-file containing a collection of commands that you ask Stata to do things for you. This module shows how you can subset data in Stata.

This is an example of my data. We can use the keep command to keep just these five variables. How to check whether a string variable contains some characters.

There is an -if- command and an -if- qualifier. The expression can depend on other variables. Dropping string observations that have a sequence of characters.

Then to confuse us further you make an example with 3 variables why 3. Each variable contains data over multiple dimensions. In this example neither variable contains missing values.

Where varlist is the list of variables you would like to drop.

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