MGH_CUSTOM_CT
Name
MGH_CUSTOM_CT
Purpose
Add several custom colour tables to the colour-table file
Category
Graphics
Color Specification.
Calling Sequence
MGH_CUSTOM_CT
Keyword Parameters
BACKUP (input, switch)
This keyword controls whether a backup copy is made of the
colour table file. Default is 1 (make a backup). Set it to 0 to
inhibit the backup.
CLOBBER (input, switch)
This keyword controls whether an existing backup file will be
replaced, if necessary. Default is 0 (don't replace).
FILE (input, scalar string)
The name of the colour table file to be modified. Default is
the value of the system variable !MGH_CT_FILE or, failing that,
the IDL default: '<IDL_DIR>/resource/colors/colors1.tbl'.
RESTORE (input, switch)
Set this keyword to restore the backup copy of the colour table
file.
START (input, scalar integer)
The index at which the first of the additional tables is
loaded. Default is 41, which is equal to the first vacant index
in resource/colors/colors1.tbl.
Side Effects
The colour table file is modified. If the BACKUP keyword is set
then a copy of the colour table file is created.
###########################################################################
Copyright (c) 2000-2014 NIWA:
http://www.niwa.co.nz/
Licensed under the MIT open source license:
http://www.opensource.org/licenses/mit-license.php
###########################################################################
Modification History
Mark Hadfield, 2001-10:
Written.
Mark Hadfield, 2005-08:
- Added CLOBBER keyword.
- Added several Matlab colour tables.
- Colour table names may now be set individually.
Mark Hadfield, 2011-10:
- Added a colour table suitable for plots of quantities like speed.
Mark Hadfield, 2011-11:
- Discovered and fixed a bug: duplicate indices in the CASE statement
meant that Matlab Cool was omitted.
Mark Hadfield, 2014-08:
- Modified the 'MGH Special 4' colour table: added a white band in the
middle. Much better! Also substituted a light red for yellow for small
positive values.