|AHELP for CIAO 4.9||
Add a keyword to a crate given a CrateKey object.
|crate||A Crate object such as a TABLECrate or IMAGECrate|
|cratekey||The CrateKey object storing the keyword and its value.|
The add_key command adds the keyword to the end of the keyword list in the crate. If the keyword already exists, the value is replaced.
Only the crate is changed; the input file is unaffected. The write_file command can be used to save the modified crate to a file.
The set_key routine can be used to create a keyword without having to create a CrateKey object.
>>> cr = read_file("evt2.fits") >>> key = CrateKey() >>> key.name = "TIMEDEL" >>> key.value("0.00285") >>> key.unit = "s" >>> add_key(cr, key)
Create a new key named "TIMEDEL" with a value of 0.00285 and units of seconds, then add it to the crate.
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.
- make_image_crate, make_table_crate, scale_image_crate, smooth_image_crate, write_arrays, write_columns
- add_col, add_piximg, cratekey, delete_col, delete_key, delete_piximg, get_key, get_key_names, get_keyval, key_exists, read_file, read_pha, read_rmf, set_key, set_keyval, write_file, write_pha, write_rmf