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ds
Title
[D] ds -- List variables matching name patterns or other characteristics
Syntax
Simple syntax
ds [, alpha]
Advanced syntax
ds [varlist] [, options]
options Description
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Main
not list variables not specified in varlist
alpha list variables in alphabetical order
detail display additional details
varwidth(#) display width for variable names; default is varwidth(12)
skip(#) gap between variables; default is skip(2)
Advanced
has(spec) describe subset that matches spec
not(spec) describe subset that does not match spec
insensitive perform case-insensitive pattern matching
indent(#) indent output; seldom used
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insensitive and indent(#) are not shown in the dialog box.
spec Description
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type typelist specified types
format patternlist display format matching patternlist
varlabel [patternlist] variable label or variable label matching patternlist
char [patternlist] characteristic or characteristic matching patternlist
vallabel [patternlist] value label or value label matching patternlist
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typelist used in has(type typelist) and not(type typelist) is a list of one or more
types, each of which may be numeric, string, str#, strL, byte, int, long, float, or
double, or may be a numlist such as 1/8 to mean "str1 str2 ... str8". Examples
include
has(type int) is of type int
has(type byte int long) is of integer type
not(type int) is not of type int
not(type byte int long) is not of the integer types
has(type numeric) is a numeric variable
not(type string) is not a string (str# or strL) variable (same as
above)
has(type 1/40) is str1, str2, ..., str40
has(type str#) is str1, str2, ..., str2045 but not strL
has(type strL) is of type strL but not str#
has(type numeric 1/2) is numeric or str1 or str2
patternlist used in, for instance, has(format patternlist), is a list of one or more
patterns. A pattern is the expected text with the addition of the characters * and
?. * indicates 0 or more characters go here, and ? indicates exactly 1 character
goes here. Examples include
has(format *f) format is %#.#f
has(format %t*) has time or date format
has(format %-*s) is a left-justified string
has(varl *weight*) variable label includes word weight
has(varl *weight* *Weight*) variable label has weight or Weight
To match a phrase, enclose the phrase in quotes.
has(varl "*some phrase*") variable label has some phrase
If instead you used has(varl *some phrase*), then only variables having labels ending in
some or starting with phrase would be listed.
Menu
Data > Describe data > Compactly list variable names
Description
ds lists variable names of the dataset currently in memory in a compact or detailed
format, and lets you specify subsets of variables to be listed, either by name or by
properties (for example, the variables are numeric). In addition, ds leaves behind in
r(varlist) the names of variables selected so that you can use them in a subsequent
command.
ds, typed without arguments, lists all variable names of the dataset currently in memory
in a compact form.
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