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I have a GraphicsGrid of MatrixPlots in the range between 0 and 1 and I want to show a single legend for all of the grid with the appropriate color range.

I tried:

Row[{GraphicsGrid[
   Table[Graphics[
     MatrixPlot[RandomReal[1, {10, 10}], Frame -> False, 
      FrameTicks -> False, ColorFunction -> "TemperatureMap"]], {x, 1,
      10}, {y, 1, 10}]], BarLegend[{"TemperatureMap", {0, 1}}]}]

But the legend's color range does not match those of the graphics. Is there an alternative way to generate a legend?

I found two posts with a similar topic, but I'm not sure how to apply this to my data

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Almost there, you problem is, that ColorFunction automaticly rescales. You can change this with ColorFunctionScaling -> False.

So you get:

Row[
 {
  GraphicsGrid[
   Table[Graphics[
     MatrixPlot[RandomReal[1, {10, 10}], Frame -> False, 
      FrameTicks -> False, ColorFunction -> "TemperatureMap", 
      ColorFunctionScaling -> False]], {x, 1, 10}, {y, 1, 10}]
   ],
  BarLegend[{"TemperatureMap", {0, 1}}]
  }
 ]

Which works like intended:

enter image description here

(Well, i would increase the size of the Graphics, but this can easily done by ImageSize-Option) Like so:

enter image description here

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  • $\begingroup$ Thank you! That works well! I was wondering if there is a way to adapt the color for the legend to the graphics instead of the other way around? $\endgroup$ – holistic May 5 '17 at 19:14
  • $\begingroup$ You could simply define your own colorfunction and apply it inside the graphics and use it for the legend. I recommend, you take a look at Blend . $\endgroup$ – Julien Kluge May 6 '17 at 0:43
  • $\begingroup$ Great, thank you :)! $\endgroup$ – holistic May 6 '17 at 7:15

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