Synopsis
Return the number of columns in a crate.
Syntax
get_number_cols(crate)
Description
| Argument | Description |
|---|---|
| crate | A Crate object such as a TABLECrate or IMAGECrate |
The get_number_cols command returns the number of columns in the input crate. If the crate contains an image, the return value is 1.
Example
>>> cr = read_file("evt2.fits")
>>> ncols = get_number_cols(cr)
>>> ncols
17The number of rows in the file is stored in the variable "ncols".
Bugs
See the bug pages on the CIAO website for an up-to-date listing of known bugs.
Refer to the CIAO bug pages for an up-to-date listing of known issues.
See Also
- contrib
- add_colvals
- crates
- add_col, col_exists, copy_colvals, copy_piximgvals, delete_col, get_axis_transform, get_col, get_col_names, get_colvals, get_crate_item_type, get_crate_type, get_key, get_key_names, get_keyval, get_number_rows, get_piximg, get_piximg_shape, get_piximgvals, get_transform, get_transform_matrix, is_virtual, set_colvals