Histogram plots in LevelScheme

问题

I've just started using LevelScheme, and have issues with getting the histogram to fit correctly within the figure. A minimal non-working example:

<<"LevelScheme`"
Figure[{FigurePanel[{{0, 1}, {0, 1}},
   LabB -> textit["x"], BufferB -> 2.5,
   LabL -> textit["p(x)"], BufferL -> 2.5,
   FrameTicks -> {LinTicks[-4, 4], LinTicks[0, 1]},
   PlotRange -> {{-3, 3}, {0, 0.5}}], 
  RawGraphics[
   Histogram[RandomReal[NormalDistribution[], 1000], Automatic, 
    "ProbabilityDensity"]]},
 Frame -> False, PlotRange -> {{-0.075, 1.1}, {-0.1, 1.03}}]

The output looks like this

when it should look like this

Basically, the Histogram graphics object doesn't obey the FigurePanel's PlotRange, but instead obeys the main Figure's PlotRange. This behaviour doesn't occur when the Histogram is replaced by a Plot or similar commands. So the following produces a clean plot

Figure[{FigurePanel[{{0, 1}, {0, 1}},
   LabB -> textit["x"], BufferB -> 2.5,
   LabL -> textit["p(x)"], BufferL -> 2.5,
   FrameTicks -> {LinTicks[-4, 4], LinTicks[0, 1]},
   PlotRange -> {{-3, 3}, {0, 0.5}}], 
  RawGraphics[Plot[1/Sqrt[2 Pi] Exp[-x^2/2], {x, -4, 4}]]},
 Frame -> False, PlotRange -> {{-0.075, 1.1}, {-0.1, 1.03}}]

Has anyone else encountered this issue? Or, do you have suggestions for a fix?

EDIT

I thought I'd add some green to the question. I'm still interested in knowing how to overcome this hurdle.

回答1:

Well, I recon you won't like this one too much but it is a workaround of sorts.

If I give PerformanceGoal -> "Speed" as a Histogram option (rather than PerformanceGoal -> "Quality") I disable interactive behaviour but, with a few minor tweaks, I get the following:

<< "LevelScheme`"
Figure[{FigurePanel[{{0, 1}, {0, 1}}, LabB -> textit["x"], 
   BufferB -> 2.5, LabL -> textit["p(x)"], BufferL -> 2.5, 
   FrameTicks -> {LinTicks[-4, 4], LinTicks[0, 1]}, 
   PlotRange -> {{-3, 3}, {0, 0.55}}], 
  RawGraphics[
   Histogram[RandomReal[NormalDistribution[], 1000], Automatic, 
    "ProbabilityDensity", PerformanceGoal -> "Speed"]]}, 
 Frame -> False, PlotRange -> {{-0.075, 1.1}, {-0.15, 1.1}}]

回答2:

As Simon mentioned in a comment, you can use LevelScheme's DataPlot to plot a histogram.

<< "LevelScheme`"
histData[x_] := 
  Cases[x, RectangleBox[{bl_, _}, {br_, c_}] :> {{bl, br}, c}, 
   Infinity];
hist = histData[
   Histogram[RandomReal[NormalDistribution[], 1000], {-4, 4, 0.1}, 
    "ProbabilityDensity"]];
bins = hist[[All, 1, 1]]; counts = hist[[All, 2]];
data = Table[{bins[[i]], counts[[i]]}, {i, 1, Length@counts}];

Figure[{FigurePanel[{{0, 1}, {0, 1}}, LabB -> textit["x"], 
   BufferB -> 2.5, LabL -> textit["p(x)"], BufferL -> 2.5, 
   FrameTicks -> {LinTicks[-4, 4], LinTicks[0, 1]}, 
   PlotRange -> {{-3, 3}, {0, 0.5}}],
  DataPlot[data, 
   DataLine -> {LineShape -> "Histogram", LineColor -> Darker@Blue}, 
   DataSymbol -> {SymbolSize -> 0.00001}],
  RawGraphics[
   Plot[1/Sqrt[2 Pi] Exp[-x^2/2], {x, -4, 4}, 
    PlotStyle -> {Red, Thick}]]
  }, Frame -> False, PlotRange -> {{-0.075, 1.1}, {-0.1, 1.03}}]

However, I haven't managed to get filled histogram bars like that produced by Histogram or BarChart, if that was also what you had intended.

BTW, the function histData is similar to something I saw on a mathematica help forum long ago, and it went in my useful functions toolkit. I don't remember where I read that or when, to credit it. However, it is not all that of a magic function now to me, as it was back then.

回答3:

I know what the problem is, but I don't have an immediate fix. The way LevelScheme works is that it transforms the Graphics objects so that they fit correctly. To do this, RawGraphics uses the legacy function TransformGraphics from LegacyPackages\Graphics\Graphics.m which is included in LegacyTransformGraphics.m in v. 3.51 of the LevelScheme packages. Looking at the FullForm of your Histogram, you can see that TransformGraphics knows nothing about dealing with the sort of objects produced. Mark Caprio is working on an update to LevelScheme over the next couple of months, so there may be a fix on the way. In the mean time, try using Rasterize before supply your histogram to RawGraphics, although it may not give you good results.

Edit: Instead of using the legacy version of TransformGraphics, a more recent version might look like

TransformGraphics[ 
  (g:(Graphics | Graphics3D))[prims__, opts:OptionsPattern[], transform_]:=
    g[ GeometricTransformation[prims, transform], opts ]

Of course, the trick is now supplying a version of transform that GeometricTransformation can accept. Although, the legacy TransformGraphics, applies a function, its second argument, directly to the points found in g, so using the above code may work without any additional changes.

To try it, replace Needs["LevelScheme`LegacyTransformGraphics`"] with the above code in either LevelScheme.nb (and regenerate LevelScheme.m) or in LevelScheme.m directly. It may not work completely, as I don't see where the options are substituted, but it should be a start.

来源：https://stackoverflow.com/questions/5465606/histogram-plots-in-levelscheme

标签

wolfram-mathematica

levelscheme