I have successful imported some Auger maps that into igor (in the form of 2D waves). However I am struggling to figure out how to make each image a different color and then overlay them into one single image, so that it looks something like the attached image. Please let me know if you know how to do this. I think that imageblend should work but I an struggling with the fact it must be a 3D wave. Can you make transparency information the third dimension somehow? Thanks!
A 2D wave is a black and white image. To make it a colour image you need three channels: red, green and blue. That's why you need a 3D wave: the 3rd dimension will be the red, green and blue layers. I assume you just need to convert the black and white 2D wave into a 3D RGB wave and select the colour you want for that Auger peak, before you ImageBlend all the RGB waves.
That's not completely accurate: 2D Matrices typically are *interpreted* as black and white when the values in the matrix are only 0 and 1.
Normally the values encompass a larger range, say 0-255 or even -Infinity to +Infinity if floating point data, in which case the value is often mapped to a color from a selection of colors (a "color table"), resulting in an image plot called a "false color plot".
That's the normal Igor image plot that defaults to the Grays color table.
Software Engineer, WaveMetrics, Inc.
Use either Igor 6's ImageBlend (which blends RGB images), or with Igor 7 you can also overlay 4-layer 3D waves, where the 4th layer is alpha (transparency).
You can convert a 2D image to RGB using ImageTransform/C=M_Colors cmap2rgb
after creating the M_Colors using ColorTab2Wave, then using SetScale x to encompass the range of values in the 2D wave.
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