plotting - Export to PDF - scaling grids of plots and text size

Sometimes I have occasion to make big grids of plots. As a toy example:

lots = GraphicsGrid[
Table[With[{a = RandomInteger[{1, 17}], b = RandomInteger[{1, 17}]},
  ParametricPlot[Sin[t^2] { Cos[a t], Sin[b t]}, {t, 0, 2 \[Pi]}, 
     PlotRange->{{-1, 1}, {-1, 1}}, Frame->True]], {15}, {7}]]

Which is a 7 by 15 grid of plots. For ease of viewing, printing and wider distribution; I will often export this to a pdf.

Export["lots.pdf", lots]

This results in a completely rubbish view. You get giant text labels and a graph too small to even see. This can be rectified by fiddling with the scaling:

Export["lots.pdf", lots, ImageSize->2000]

Now the text labels are more in proportion with the graph size. But how do I know what ImageSize should be? It depends on how big your graphic grid is, but I know not the voodoo required to get a good result.

Alternatively, how can I get the text size to be proportional to the graph size?

Answer

You should investigate in the Scaled function:

lots = GraphicsGrid[
   Table[With[{a = RandomInteger[{1, 17}], 
      b = RandomInteger[{1, 17}]}, 
     ParametricPlot[Sin[t^2] {Cos[a t], Sin[b t]}, {t, 0, 2 \[Pi]}, 
      PlotRange -> {{-1, 1}, {-1, 1}}, Frame -> True, 
      ImageSize -> Scaled[1]]], {15}, {7}]];
Export["lots.pdf", lots]

enter image description here

Comments

plotting - Filling between two spheres in SphericalPlot3D

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

I have a list of 4D data (x position, y position, amplitude, wavelength). I want to plot x, y, and amplitude on a 3D plot and have the color of the points correspond to the wavelength. I have seen many examples using functions to define color but my wavelength cannot be expressed by an analytic function. Is there a simple way to do this? Answer Here a another possible way to visualize 4D data: data = Flatten[Table[{x, y, x^2 + y^2, Sin[x - y]}, {x, -Pi, Pi,Pi/10}, {y,-Pi,Pi, Pi/10}], 1]; You can use the function Point along with VertexColors . Now the points are places using the first three elements and the color is determined by the fourth. In this case I used Hue, but you can use whatever you prefer. Graphics3D[ Point[data[[All, 1 ;; 3]], VertexColors -> Hue /@ data[[All, 4]]], Axes -> True, BoxRatios -> {1, 1, 1/GoldenRatio}]

plotting - Adding a thick curve to a regionplot

Suppose we have the following simple RegionPlot: f[x_] := 1 - x^2 g[x_] := 1 - 0.5 x^2 RegionPlot[{y < f[x], f[x] < y < g[x], y > g[x]}, {x, 0, 2}, {y, 0, 2}] Now I'm trying to change the curve defined by $y=g[x]$ into a thick black curve, while leaving all other boundaries in the plot unchanged. I've tried adding the region $y=g[x]$ and playing with the plotstyle, which didn't work, and I've tried BoundaryStyle, which changed all the boundaries in the plot. Now I'm kinda out of ideas... Any help would be appreciated! Answer With f[x_] := 1 - x^2 g[x_] := 1 - 0.5 x^2 You can use Epilog to add the thick line: RegionPlot[{y < f[x], f[x] < y < g[x], y > g[x]}, {x, 0, 2}, {y, 0, 2}, PlotPoints -> 50, Epilog -> (Plot[g[x], {x, 0, 2}, PlotStyle -> {Black, Thick}][[1]]), PlotStyle -> {Directive[Yellow, Opacity[0.4]], Directive[Pink, Opacity[0.4]],

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