File:P hot.gif
P_hot.gif (640 × 480 pixels, file size: 17 KB, MIME type: image/gif)
File information
Structured data
Captions
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 “P hot.svg”—then the template Vector version available (or Vva) does not need the new image name parameter. |
Contents
Summary edit
DescriptionP hot.gif | Hot color gradient in Gnuplot (black-red-yellow-white) |
Source | self-made using Gnuplot |
Author | Adam majewski |
Other versions |
|
Gnuplot source code edit
set palette rgbformulae 21,22,23 set terminal gif set output 'p.gif' test palette
Numbers after rgbformulae denote number of color function ( see https://astro.uni-bonn.de/~ithies/gnuplot/colortools/rgbformulae.gp ) It means that:
- color.R=3x
- color.G=3x-1
- color.B=3x-2
C code edit
/* this is part of code which shows how to get above gradient */ unsigned char color[3]; /* array */ int convert2light(double p) { if (p<0) return 0; if (p>1) return 255; else return (int)255*p; } void GiveHotColorGradient(double position,unsigned char c[]) { /* (black-red-yellow-white) */ c[0] = convert2light(3*position); c[1] = convert2light(3*position-1); c[2] = convert2light(3*position-2); }
See also other images of color gradients edit
Licensing edit
I, the copyright holder of this work, hereby publish it under the following licenses:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International, 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic 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.
You may select the license of your choice.
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 13:47, 9 March 2008 | 640 × 480 (17 KB) | Soul windsurfer (talk | contribs) | {{Information |Description= |Source=self-made |Date= |Author= Adam majewski |Permission= |other_versions= }} |
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File usage on Commons
The following 7 pages use this file:
- File:Cubehelix gnuplot palette.png
- File:Gnuplot HSV gradient.png
- File:Gnuplot color gradient, defined as 0 0 0 0, 1 0 0 1, 3 0 1 0, 4 1 0 0, 6 1 1 1.png
- File:Gnuplot color gradient RGB defined ( 0 "red", 0.5 "yellow", 1 "green" ).png
- File:Gnuplot linear gray gradient.png
- File:Matlab gradient.png
- File:RGB profiles of the color palette.gif
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