Avoiding the re-evaluation of a RegionPlot3D

Question

Is there a simple way to save the output from RegionPlot3D so as to avoid re-evaluating when the notebook is re-opened and Show is used to re-display the plot? The re-evaluation takes in excess of 30 mins of run time.

Answer 1

One way is to give your figure a name:

 sav = RegionPlot3D[x^2 + y^3 - z^2 > 0, {x, -2, 2}, {y, -2, 2}, {z, -2, 2}]

Then save it:

 DumpSave["temp.mx", sav]

To read it back in later (after clearing everything or restarting the program)

 DumpGet["temp.mx"]

This should work to avoid recalculation of most anything, not just RegionPlot.