umx (version 1.4.0)

umx_grep: umx_grep

Description

Search for text. Will search names if given a data.frame, or strings if given a vector of strings. NOTE: Handy feature is that this can search the labels of data imported from SPSS

Usage

umx_grep(df, grepString, output = c("both", "label", "name"), ignore.case = TRUE, useNames = FALSE)

Arguments

df

The data.frame or string to search

grepString

the search string

output

the column name, the label, or both (default)

ignore.case

whether to be case sensitive or not (default TRUE = ignore case)

useNames

whether to search the names as well as the labels (for SPSS files with label metadata)

Value

- list of matched column names and/or labels

Details

To simply grep for a pattern in a string just use R built-in grep* functions, e.g.: grepl("^NA\[0-9]", "NA.3")

References

- http://www.github.com/tbates/umx

See Also

- grep umx_aggregate

Other Utility Functions: qm, umx_find_object, umx_msg, umx_names, umx_paste_names, umx_pb_note, umx_print, umx_rename, umx

Examples

umx_grep(mtcars, "hp", output="both", ignore.case= TRUE)
umx_grep(c("hp", "ph"), "hp")
umx_grep(mtcars, "^h.*", output="both", ignore.case= TRUE)
## Not run: 
# umx_grep(spss_df, "labeltext", output = "label") 
# umx_grep(spss_df, "labeltext", output = "name") 
# ## End(Not run)