plotting - Why is my rasterized graphic blank?

Bug introduced in 7.0 or earlier, and persisting through 10.1 or later (OSX 10.10.2)

Consider the following code:

jet[u_?NumericQ] := 
  Blend[{{0, RGBColor[0, 0, 9/16]}, {1/9, Blue}, {23/63, 
      Cyan}, {13/21, Yellow}, {47/63, Orange}, {55/63, Red}, {1, 
      RGBColor[1/2, 0, 0]}}, u] /; 0 <= u <= 1;
(* jet function get from http://stackoverflow.com/a/9321152/1363677*)
caxis[x_, {min_, max_}] := 
  If[x < min, jet[0], If[x > max, jet[1], jet[(x - min)/(max - min)]]];

data1 = Table[

   Sinc[x*y] + RandomReal[{0., 0.2}], {x, -2 Pi, 2 Pi, 0.05}, {y, -2 Pi, 2 Pi, 0.05}];
data2 = Table[
   Sinc[x*y] + RandomReal[{0., 0.2}], {x, -2 Pi, 2 Pi, 0.02}, {y, -2 Pi, 2 Pi, 0.02}];

Row[{Graphics[Raster[data1, ColorFunction -> (caxis[#, {-0.5, 2}] &)],
    ImageSize -> 200],
  Graphics[Raster[data2, ColorFunction -> (caxis[#, {-0.5, 2}] &)], 
   ImageSize -> 200],
  Graphics[Raster[data2, ColorFunction -> "BlueGreenYellow"], 
   ImageSize -> 200]}]

It gives the output:

enter image description here

Why is the second plot blank?

If the dynamic updating is turned off, all of the three are blank.

enter image description here

Why does Mathematica behave like this? I'm using OSX 10.8.4 on a Macbook Air with 1.7 GHz Intel Core i5 and 4GB memory.

Answer

Label this a most bizarre bug -- I can reproduce the problem (v9.0.0.0) -- the fix, change all those integer fractions in Blend to decimals..

This fails:

jet[u_?NumericQ] :=  Blend[{{0, RGBColor[0, 0, 1/9]}, {1, Red}}, u] /; 0 <= u <= 1

This works

jet[u_?NumericQ] := Blend[{{0, RGBColor[0, 0, 0.11111111]}, {1, Red}}, u] /; 0 <= u <= 1

Edit: another curiosity.. this should be the same (I think..) normalising the values before passing to the color function.

Graphics[Raster[data1, Automatic, {-.05, 2}, 
         ColorFunction -> (caxis[#, {0, 1}] &)], ImageSize -> 200]

Although it works, the colors are substantially different.

Comments

plotting - Plot 4D data with color as 4th dimension

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plotting - Filling between two spheres in SphericalPlot3D

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plotting - Mathematica: 3D plot based on combined 2D graphs

I have several sigmoidal fits to 3 different datasets, with mean fit predictions plus the 95% confidence limits (not symmetrical around the mean) and the actual data. I would now like to show these different 2D plots projected in 3D as in but then using proper perspective. In the link here they give some solutions to combine the plots using isometric perspective, but I would like to use proper 3 point perspective. Any thoughts? Also any way to show the mean points per time point for each series plus or minus the standard error on the mean would be cool too, either using points+vertical bars, or using spheres plus tubes. Below are some test data and the fit function I am using. Note that I am working on a logit(proportion) scale and that the final vertical scale is Log10(percentage). (* some test data *) data = Table[Null, {i, 4}]; data[[1]] = {{1, -5.8}, {2, -5.4}, {3, -0.8}, {4, -0.2}, {5, 4.6}, {1, -6.4}, {2, -5.6}, {3, -0.7}, {4, 0.04}, {5, 1.0}, {1, -6.8}, {2, -4.7}, {3, -1....

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