File:Gnuplot HSV gradient.png
 |
This image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.It is recommended to name the SVG file “Gnuplot HSV gradient.svg”—then the template Vector version available (or Vva) does not need the new image name parameter. |
Summary
| Description |
English: 2D RGB profile of the rainbow color gradient ( gnuplot HSV gradient) |
| Date | |
| Source | Own work |
| Author | Adam majewski |
| Other versions |
|
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Gnuplot source code
"The map is obtained by linearly varying the hue through all possible values while keeping constant maximum saturation and value." [1]
![[1]](./File:Gnuplot_HSV_gradient.png#cite_note-1){kind=link}
set palette model HSV functions gray,1,1
set terminal png
set output 'p.png'
test palette
or
set palette model HSV defined ( 0 0 1 1, 1 1 1 1 )
or
set palette model HSV
set palette rgbformulae 3,2,2
test palette
where:
- 3 = x
- 2 = 1
Test:
show palette
palette is COLOR
color mapping by defined gradient
figure is POSITIVE
all color formulae ARE NOT written into output postscript file
allocating ALL remaining color positions for discrete palette terminals
Color-Model: HSV
gamma is 1.5
show palette gradient
0. gray=0.0000, (r,g,b)=(0.0000,1.0000,1.0000), #00ffff = 0 255 255
1. gray=1.0000, (r,g,b)=(1.0000,1.0000,1.0000), #ffffff = 255 255 255
Octave src code
## https://octave.sourceforge.io/octave/function/hsv.html
## Show the 'hsv' colormap profile and as an image
cmap = hsv (256);
subplot (2, 1, 1);
rgbplot (cmap, "composite");
subplot (2, 1, 2);
rgbplot (cmap);
