Query an Object for Information
query.RdThe function query can be used to search an object
for a keyword.
The data.set and importer methods perform such a search
through the annotations and value labels of
the items in the data set.
Usage
query(x,pattern,...)
# S4 method for class 'data.set'
query(x,pattern,...)
# S4 method for class 'importer'
query(x,pattern,...)
# S4 method for class 'item'
query(x,pattern,...)
# (Called by the methods above.)Arguments
- x
an object
- pattern
a character string that gives the pattern to be searched for
- ...
optional arguments such as
fuzzylogical, TRUE by default; use fuzzy search via
agrepor regexp search viagrepextendedlogical, defaults to FALSE; passed to
grepperllogical, defaults to TRUE; passed to
grepfixedlogical, defaults to TRUE; passed to
grepignore.caseinsertionsnumerical value, defaults to 0.999999999; passed to
agrepdeletionsnumerical value, defaults to 0; passed to
agrepsubstitutionsnumerical value, defaults to 0; passed to
agrep
Value
If both the annotation and the value labels of an item match the pattern
the query method for 'item' objects returns a list containing the annotation
and the value labels, otherwise if only the annotation or the value labels
match the pattern, either the annotation or the value labels are returned,
otherwise if neither matches the pattern, query returns NULL.
The methods of query for 'data.set' and 'importer' objects return
a list of all non-NULL query results of all items contained by these
objects, or NULL.
Examples
nes1948.por <- unzip(system.file("anes/NES1948.ZIP",package="memisc"),
"NES1948.POR",exdir=tempfile())
nes1948 <- spss.portable.file(nes1948.por)
#> Warning: 9 variables have duplicated labels:
#> V480004, V480012, V480020, V480021A, V480021B, V480033A, V480033B,
#> V480034A, V480034B
query(nes1948,"TRUMAN")
#> $V480013
#>
#> Values and labels:
#>
#> 10 'SURPRISED -- THOUGHT PEOPLE WANTED CHA'
#> 11 'SURPRISED -- EXPERTS, RADIO, PAPERS SA'
#> 12 'SURPRISED -- DEWEY A BETTER MAN'
#> 13 'SURPRISED -- TRUMAN RECORD BAD'
#> 14 'SURPRISED -- OTHER, MISCELLANEOUS'
#> 15 'SURPRISED -- DON'T KNOW WHY'
#> 19 'SURPRISED -- NA WHY'
#> 20 'EXPECTED -- PEOPLE WANTED SAME ADMINIS'
#> 21 'EXPECTED -- SKEPTICAL OF RADIO, NEWSPA'
#> 22 'EXPECTED -- REPUBLICANS OVER-CONFIDENT'
#> 23 'EXPECTED -- TRUMAN'S CAMPAIGN MORE EFF'
#> 24 'EXPECTED -- TRUMAN A BETTER MAN OR BET'
#> 25 'EXPECTED -- PEOPLE OPPOSED TO 80TH CON'
#> 26 'EXPECTED -- PEOPLE VOTED IN ROOSEVELT'
#> 27 'EXPECTED -- LABOR, NEGRO, GOVERNMENT E'
#> 28 'EXPECTED -- DK WHY'
#> 29 'EXPECTED -- NA WHY'
#> 30 'EXPECTED -- OTHER'
#> 88 'IGNORES POLITICS'
#> 98 'DON'T KNOW WHETHER SURPRISED'
#> 99 'NA WHETHER SURPRISED'
#>
#>
#> $V480014A
#> $V480014A$annotation
#> description:
#> WHY PPL VTD FOR TRUMAN 1
#>
#>
#> $V480014A$labels
#>
#> Values and labels:
#>
#> 10 'BETTER MAN'
#> 20 'EXPERIENCED, GOOD RECORD'
#> 30 'TRUMAN PRO-LABOR, NEGRO, WORKING MAN'
#> 40 'GOOD CAMPAIGN CONDUCTED BY TRUMAN'
#> 50 'DEMOCRATS MEAN PROSPERITY, REPUBLICANS'
#> 60 'TRUMAN PRO RENT CONTROL, PRICE CONTROL,'
#> 70 'ROOSEVELT TRADITION'
#> 80 'PERSONAL ATTRIBUTES'
#> 90 'OTHER'
#> 91 'NO SECOND REASON'
#> 98 'DK'
#> 99 'NA'
#>
#>
#>
#> $V480014B
#> $V480014B$annotation
#> description:
#> WHY PPL VTD FOR TRUMAN 2
#>
#>
#> $V480014B$labels
#>
#> Values and labels:
#>
#> 10 'BETTER MAN'
#> 20 'EXPERIENCED, GOOD RECORD'
#> 30 'TRUMAN PRO-LABOR, NEGRO, WORKING MAN'
#> 40 'GOOD CAMPAIGN CONDUCTED BY TRUMAN'
#> 50 'DEMOCRATS MEAN PROSPERITY, REPUBLICANS'
#> 60 'TRUMAN PRO RENT CONTROL, PRICE CONTROL,'
#> 70 'ROOSEVELT TRADITION'
#> 80 'PERSONAL ATTRIBUTES'
#> 90 'OTHER'
#> 91 'NO SECOND REASON'
#> 98 'DK'
#> 99 'NA'
#>
#>
#>
#> $V480015A
#> $V480015A$annotation
#> description:
#> WHY PPL VTD AGNST TRUMAN 1
#>
#>
#> $V480015A$labels
#>
#> Values and labels:
#>
#> 10 'SMALL MAN, INADEQUATE BACKGROUND'
#> 20 'CAN'T HANDLE SUBORDINATES, OR PICKED BA'
#> 30 'CAN'T GET THINGS DONE'
#> 40 'PARTIAL TO LABOR, NEGRO, WORKING MAN, G'
#> 50 'CAN'T GET ALONG WITH CONGRESS'
#> 60 'CIVIL RIGHTS PROGRAM'
#> 70 'NOTHING SPECIAL ABOUT TRUMAN MADE PEOPL'
#> 80 'PERSONAL ATTRIBUTES'
#> 90 'OTHER REASONS'
#> 91 'NO SECOND REASON'
#> 98 'DK'
#> 99 'NA'
#>
#>
#>
#> $V480015B
#> $V480015B$annotation
#> description:
#> WHY PPL VTD AGNST TRUMAN 2
#>
#>
#> $V480015B$labels
#>
#> Values and labels:
#>
#> 10 'SMALL MAN, INADEQUATE BACKGROUND'
#> 20 'CAN'T HANDLE SUBORDINATES, OR PICKED BA'
#> 30 'CAN'T GET THINGS DONE'
#> 40 'PARTIAL TO LABOR, NEGRO, WORKING MAN, G'
#> 50 'CAN'T GET ALONG WITH CONGRESS'
#> 60 'CIVIL RIGHTS PROGRAM'
#> 70 'NOTHING SPECIAL ABOUT TRUMAN MADE PEOPL'
#> 80 'PERSONAL ATTRIBUTES'
#> 90 'OTHER REASONS'
#> 91 'NO SECOND REASON'
#> 98 'DK'
#> 99 'NA'
#>
#>
#>
#> $V480016A
#>
#> Values and labels:
#>
#> 10 'BETTER MAN'
#> 20 'EXPERIENCED'
#> 30 'DEWEY PRO BUSINESS, WEALTHY, TRUMAN PRO'
#> 40 'GOOD CAMPAIGN CONDUCTED BY DEWEY'
#> 50 'REPUBLICANS BRING PROSPERITY, GOOD FOR'
#> 60 'DEWEY PRO-80TH CONGRESS, TAFT-HARTLEY A'
#> 70 'DEMOCRATS IN OFFICE TOO LONG'
#> 80 'PERSONAL ATTRIBUTES'
#> 90 'OTHER REASONS'
#> 91 'NO SECOND REASON'
#> 98 'DK'
#> 99 'NA'
#>
#>
#> $V480016B
#>
#> Values and labels:
#>
#> 10 'BETTER MAN'
#> 20 'EXPERIENCED'
#> 30 'DEWEY PRO BUSINESS, WEALTHY, TRUMAN PRO'
#> 40 'GOOD CAMPAIGN CONDUCTED BY DEWEY'
#> 50 'REPUBLICANS BRING PROSPERITY, GOOD FOR'
#> 60 'DEWEY PRO-80TH CONGRESS, TAFT-HARTLEY A'
#> 70 'DEMOCRATS IN OFFICE TOO LONG'
#> 80 'PERSONAL ATTRIBUTES'
#> 90 'OTHER REASONS'
#> 91 'NO SECOND REASON'
#> 98 'DK'
#> 99 'NA'
#>
#>
#> $V480018
#>
#> Values and labels:
#>
#> 1 'VOTED - FOR TRUMAN'
#> 2 'VOTED - FOR DEWEY'
#> 3 'VOTED - FOR WALLACE'
#> 4 'VOTED - FOR OTHER'
#> 5 'VOTED - NA FOR WHOM'
#> 6 'DID NOT VOTE'
#> 9 'NA WHETHER VOTED'
#>
#>
#> $V480020
#>
#> Values and labels:
#>
#> 11 'DID NOT CONSIDER ANYONE ELSE'
#> 12 'CONSIDERED DEWEY'
#> 13 'CONSIDERED WALLACE'
#> 14 'CONSIDERED OTHER'
#> 19 'NA'
#> 21 'CONSIDERED TRUMAN'
#> 22 'DID NOT CONSIDER ANYONE ELSE'
#> 23 'CONSIDERED WALLACE'
#> 24 'CONSIDERED OTHER'
#> 29 'NA'
#> 33 'DID NOT CONSIDER ANYONE ELSE'
#> 41 'CONSIDERED TRUMAN'
#> 44 'DID NOT CONSIDER ANYONE ELSE'
#> 49 'NA'
#> 91 'INAP'
#>
#>
#> $V480023
#>
#> Values and labels:
#>
#> 0 'INAP'
#> 1 'TRUMAN - STRAIGHT'
#> 2 'TRUMAN - SPLIT'
#> 3 'DEWEY - STRAIGHT'
#> 4 'DEWEY - SPLIT'
#> 5 'WALLACE - STRAIGHT'
#> 6 'OTHER - STRAIGHT'
#> 7 'OTHER - SPLIT'
#> 8 'DK'
#> 9 'NA'
#>
#>
#> $V480024
#>
#> Values and labels:
#>
#> 0 'INAP'
#> 1 'TRUMAN'
#> 2 'DEWEY'
#> 3 'WALLACE'
#> 7 'OTHER'
#> 8 'DK'
#> 9 'NA'
#>
#>
#> $V480031A
#> description:
#> GRPS IDENTIFIED W TRUMAN 1
#>
#>
#> $V480031B
#> description:
#> GRPS IDENTIFIED W TRUMAN 2
#>
#>
#> $V480031C
#> description:
#> GRPS IDENTIFIED W TRUMAN 3
#>
#>
#> $V480037
#>
#> Values and labels:
#>
#> 0 'NO INCIDENT MENTIONED'
#> 1 'DEWEY - TRAIN ENGINEER'
#> 2 'DEWEY - 3 SYLLABLE WORDS'
#> 3 'DEWEY - DEBATE WITH STASSEN'
#> 4 'DEWEY - PRESS CONFERENCE'
#> 5 'TRUMAN - VINSON-PRO'
#> 6 'TRUMAN - VINSON-CON'
#>
#>