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| == Variable Labels == | == Labels == |
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| Variable labels are defined using the '''`label`''' command. | Variable and value labels are defined using the '''`label`''' command. |
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| label variable foo "bar" | label variable foo "yes or no?" label define yesno 1 "Yes" 0 "No" label values foo yesno |
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| Variable metadata including labels can be inspected and exported using the '''`describe`''' command. | See [[Stata/Label|here]] for more options. Numeric values can be quickly prepended to value labels using the '''`numlabel`''' command. |
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| preserve describe, replace assert varlab=="bar" if name=="foo" restore }}} ---- == Value Labels == Variable labels are defined using the '''`label`''' command. However, they must first be defined as a label and then linked to one or more variables. {{{ label define baz 0 "No" 1 "Yes" label define baz 99 "Missing", modify label values foo baz }}} By default, labels cannot be overwritten. The '''`add`''' option allows new values to be inserted into an existing label. The '''`replace`''' option allows existing values to be overwritten in an existing label. The '''`modify`''' option combines both. Numeric values can be added to value labels using the '''`numlabel`''' command. {{{ numlabel baz, add mask("#. ") |
numlabel foo, add mask("#. ") |
Stata Metadata
Stata offers human-readable variable names, variable labels, variable printing formats, and value labels.
Stata stores variable labels and value labels in a separate database. Many built-in commands seamlessly pull in metadata from that database, but there are notable exceptions.
Contents
Labels
Variable and value labels are defined using the label command.
label variable foo "yes or no?" label define yesno 1 "Yes" 0 "No" label values foo yesno
See here for more options.
Numeric values can be quickly prepended to value labels using the numlabel command.
numlabel foo, add mask("#. ")
Quick Tips
Stata has a number of interactive tools for examining metadata.
di _N // number of cases di c(k) // number of variables