Stata filter by condition
Webthree ways to do this: you can open a Stata dataset (ends in .dta), you can read in a non-Stata file, or you can enter data manually. Opening a Stata dataset is done using the Open command on the file menu. Reading in a non-Stata file requires using the infile command, but the actual procedure is somewhat complex and will not be covered here. WebJan 4, 2024 · Filter specific observations. I have an employer-employee database and need to keep only the individuals that have at least one colleague considering the Firm_id variable, but I don't know how to do this in Stata. My dataset is like: Id Firm_id Year 1 50 2010 1 50 2011 2 50 2010 2 50 2011 3 22 2010 3 22 2011 4 22 2010 4 20 2011.
Stata filter by condition
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WebMar 8, 2016 · The order of Boolean operations in Stata, as in most programming languages, is that & takes precedence over . So what you want is Code: gen G = 1 if a == 1 & (b == 1 b == 2) Comments: This generates a 1/. variable rather than a 1/0 variable. 1/0 variables are generally more useful. Web594 Stata tip 39 that inrange(z, a,.)is interpreted as z ≥ a and z<.(z greater than or equal to a, but not missing). This may look like a bug, but it is really a feature. Even experienced users sometimes forget that in Stata numeric missing is regarded as arbitrarily large. Hence, z>=42will be true for all the missing values of z, as well as ...
WebFilter non-missing values. In Stata, missing values behave like +Inf. In R, missing values are special values that represents epistemic uncertainty. ... filter(df, condition) only filters rows where the condition evaluates to TRUE. In particular, rows that evaluate to NA are dropped. Contrast the following behaviors with Stata. df <- tibble(x ... WebMar 25, 2013 · Re: st: filter string variable. You can select _string variables_ that contain text such as "agri" by ... if strpos (mystrvar, "agri") and by extension by you can select such …
WebMissing values in stata are equivalent to infinity and thus will be sorted to the bottom of your sort if they exist *Example of points 1 and 2 above sysuse bplong, clear sort when patient sort patient when preserve replace when = . if _n == 25 sort when patient //where did the missing value get sorted to? restore WebApr 28, 2024 · I'm currently attempting to ask Stata to code a variable as '1' if it meets several criteria, and 0 if it doesn't. Here's the code below, which may make more sense …
WebAug 3, 2024 · #1 Drop conditional on a date DDMMYYYY format 02 Aug 2024, 10:58 Hi all, I have patent data where the date is given in DDMMYYY form. For example, 06jun2006. Any idea how to drop observations which, for example, are dated before 01jan2001? It is currently in int storage type (not sure if that is relevant). Code: * Example generated by …
WebDec 10, 2013 · Stata encourages you to do this instead: bysort HHID : egen hhage = tota (age * (Personid == "P1")) This solution assumes that Personid is a string variable. If it is a numeric variable, the expression Personid == "P1" should be replaced by something like Personid == 1 using 1 or whatever other integer code is appropriate. fern wake cazooYou already know one solution: using a complicated ifcondition. It is just that you really would rather not type out some long line like In practice, what you type should never be as long as this example implies. You can cut down typing substantially by using functions such as inlist() and inrange(). (We will mention … See more I have a dataset, and I wish to work with a subset of observations, and that subset is defined by a complicated criterion. (This might be a long list of identifiers or some other codes specifying which observations belong in the subset.) … See more Repeated typing of various syntax elements is part of what makes this approach difficult. Questions like this arise frequently, so we need other methods. There is another way … See more Before starting to answer, let us indicate just two situations in which this question might arise. You might wish to work with a smaller dataset that is defined by either this criterion or its complement. Or, you might wish to define … See more A third way uses merge. You may need to get around a mental block that mergeis a command that produces larger datasets; i.e., "this dataset" plus … See more deliverance church of god easley scWebOct 28, 2015 · 1 Answer. In Stata [not STATA] rows are more properly called observations. You can "select" the last observation in each panel with the generic. the built-in variable _n identifies observations in each panel. its sibling _N is the number of observations in each panel and therefore identifies the last observation in each panel. deliverance church kayoleWebWhere Stata only allows one to work with one data set at a time, multiple data sets can be loaded into the R environment simultaneously, and hence must be specified with each function call. Note: Rdoes not have an equivalent to Stata’s `codebook` command. Summarize Data Estimate Models, 1/2 OLS Setup browse // open browser for loaded data deliverance by james dickeyWebAlmost all commands in Stata can be combined with so callded if qualifiers. These are conditions that tell Stata which observations that should be included in the command. We … deliverance church blue valleyWebJan 4, 2024 · Filter specific observations. I have an employer-employee database and need to keep only the individuals that have at least one colleague considering the Firm_id … fern wagley nappanee inWebAug 2, 2024 · SOME COMMAND if CONDITION is the way to go. There is no need for using -preserve- and -restore-, and dropping observations, to do so. If you want to execute 3 COMMANDS on these special observations, the whole statement has to be repeated (albeit there are more elegant ways to achieve the same without literally copy-and-pasteing … fern voice note