Function [cg,ngrade,ngradedefault] = colourgrade_init_ngrade(cg)
returns the input struct cg after instantiating
the fields:
cg.gradevalues (column vector of reals;
[] at default)
cg.gradeticks (column vector of booleans;
[] at default)
cg.gradetexts (column cell-array of strings;
{} at default)
cg.offset (cg.icm_min + cg.offset is the
row index to the colourmap
where the second part starts;
0 at default)
The function also returns ngrade i.e. the number of
grades. It is obtained from:
ngrade = length(cg.gradevalues) - 1;
ngrade = length(cg.gradeticks) - 1;
and/or
ngrade = length(cg.gradetexts) - 1;
If no grades are defined, ngrade holds an
empty matrix [].
The function also returns a default value (20)
for ngrade.
The function is called in:
colourgrade_init.m
colourgrade_bluered.m
colourgrade_streaked.m
(c) 2026 fabien van mook
2026.08.20 release of this file within package "fvm-colourgrade" under GNU GPLv3+
