The QUERY_CSV function tests a file for compatibility with READ_CSV and returns an optional structure containing information about the file.
This routine is written in the IDL language. Its source code can be found in the file query_csv.pro in the lib subdirectory of the IDL distribution.
Result = QUERY_CSV( Filename [, Info] )
This routine returns a long with the value of 1 (one) if the query was successful (and the file type was correct) or 0 (zero) on failure.
A scalar string containing the full pathname of the file to query.
A named variable in which to return an anonymous structure containing information about the file. This structure is valid only when the return value of the function is 1. The structure has the following fields:
|
Field |
IDL Type |
Description |
|
NAME |
String |
File name, including full path |
|
TYPE |
String |
File format (always 'CSV') |
|
LINES |
Long64 |
Number of lines |
|
NFIELDS |
Long |
Number of columns |
None
|
7.1 |
Introduced |