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qlut Set lookup table for future qimsc
Help text:

qlut(lut) where lut is Nx3 sets a new lookup table for qimsc.
qlut(lut, nanc) where nanc is 1x3 (or 3x1) sets a special color to use for NaN values. (The default is white.)
[lut, nanc] = qlut returns current values.

Example:

qfigure('qlut', 3, 3);

xx=repmat(2*pi*[0:100]/100,101,1);

yy=xx';

zz=cos(xx)+sin(yy);

qimsc([0 0 1 1], zz);

qat 1 0

qcbar(10,[],10,0,1);

qlut(jet)

qimsc([0 1.1 1 1], zz);

qat 1 1.1

qcbar(10,[],10,0,1);

qlut(hsv)

qimsc([1.5 0 1 1], zz);

qat 2.5 0

qcbar(10,[],10,0,1);

qlut(hot)

qimsc([1.5 1.1 1 1], zz);

qat 2.5 1.1

qcbar(10,[],10,0,1);

qshrink 1

QPlot Documentation — (C) Daniel Wagenaar, 2014–2019