MaplePrimes - answers and comments on Question, Value of color in density plot an

Value of color in density plot

gkokovidis — Tue, 10 Nov 2009 06:01:18 Z

Alec answered a similar question a while back. See the link here. The answer to part 2 of your question is yes. Just use the "display" command.

Regards,
Georgios Kokovidis

Dräger Medical

density plot with colour bar

Robert Israel — Tue, 10 Nov 2009 06:37:24 Z

Something like this, perhaps

> with(plots):
  P1:= densityplot(x*exp(-x^2-y^2),x=-1..1,y=-1..1,grid=[25,25],
     colourstyle=HUE,axes=box):
  P3:= plot3d(x*exp(-x^2-y^2),x=-1..1,y=-1..1,grid=[25,25]):
  ZA:= op([1,3],indets(P3,specfunc(anything,GRID))):
  zmax, zmin:= (min,max)(ZA):
  cbar:= densityplot(z,x=0.. 0.1, z=zmax .. zmin,grid=[2,25],
    colourstyle=HUE,axes=box,tickmarks=[0,5],labels=["",""]):
  display(Array([P1,cbar]));

Now the colour bar is much too wide, so click on its right edge with the mouse and resize.

Unfortunately this only works in the Standard GUI: it seems to be impossible to export the resulting plot as a single image to gif or jpeg formats (what I show below is two separate files, which strangely enough were given different heights). And in Classic the display command seems to run forever.

scaling = constrained?

herclau — Tue, 10 Nov 2009 18:33:29 Z

"Now the colour bar is much too wide, so click on its right edge with the mouse and resize"

Why not use the command scaling = constrained?

cbar: = densityplot (z, x = 0 ... 1, z = zmin .. zmax, grid = [2, 25], colourstyle = HUE, axes = box, tickmarks = [0, 5], labels = [ " "" "], scaling = constrained)

HerCalu

scaling=constrained

Robert Israel — Wed, 11 Nov 2009 03:46:30 Z

What that gives me when the Array is displayed is two rectangles of the same size; the colour bar is narrow, but there's a lot of white space around it.

masterly

herclau — Wed, 11 Nov 2009 18:20:44 Z

Genial

Gracias

HerClau