Gimp - Create a sample
Creating an image with a size of 300 * 100 pixels
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In Gimp, choose File, then New. In the window that opens, choose a width of 300 pixels and a height of 100 pixels:
![](informatique/graphisme/gimp/echantillons/creer_echantillon_01.jpg)
The image appears:
![](informatique/graphisme/gimp/echantillons/creer_echantillon_02.jpg)
Colorize the picture using a gradient of colors
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Choose 2 colors that will be used for the sample. The first must be black:
![](informatique/graphisme/gimp/echantillons/creer_echantillon_03.jpg)
Then select the Gradient tool:
![](informatique/graphisme/gimp/echantillons/creer_echantillon_04.jpg)
and click the left side of the picture, extend the selection to the right of the image to obtaine a horizontal line to with the following gradient:
![](informatique/graphisme/gimp/echantillons/creer_echantillon_05.jpg)
The sample is now created. All you have to do is to save it. Several examples of samples are available here.