Function: colourize - change colours in a plot
Calling sequence:
colourize(P,f,s);
colourize(P,f,[c1,c2]);
Parameters:
P - a two or three-dimensional plot structure.
f - a function.
s - (optional) the colouring system: RGB, HSV or HUE.
c1, c2 - colour specifications
Description:
Examples:
A parametric spiral curve, colour varying from blue to red.
> colourize(plot([t*cos(t),t*sin(t),t=0..50],scaling=constrained),(x,y) -> sqrt(x^2+y^2)/50, [blue, red]);
A rectangular grid created with densityplot , showing a bug (which occurs when the grid option is given with unequal numbers). The colourized version is correct.
>
P:= plots[densityplot](x/5,x=0..5,y=0..5,
grid=[7,8],colorstyle=HUE): P;
colourize(P,(x,y) -> x/5,HUE);
A three-dimensional plot.
>
colourize(plot3d({x^2+y^2,2-x^2-y^2},
x=-1..1,y=-1..1, style=patch),
(x,y,z) -> [z/2,0,1-z/2],RGB);
Animation with points and text.
>
with(plots):
P:= display([seq(display(
{ pointplot({seq([1.1*(cos(i*Pi/5)*(1-j/10)+
cos((i+3)*Pi/5)*j/10),1.1*(sin(i*Pi/5)*(1-j/10)+
sin((i+3)*Pi/5)*j/10)],
i=0..9)},symbol=BOX),
textplot({seq([cos(i*Pi/5+j*Pi/50),sin(i*Pi/5+j*Pi/50),j],i=0..9)})}),j=0..9)],insequence=true,axes=none,scaling=constrained):
colourize(P,(x,y) -> [(arctan(x,y)+Pi)/(2*Pi),1,sqrt(x^2+y^2)/1.1], HSV);
See also:
densityplot , display , implicitplot3d , plot,color , plot,options , plot,structure plot3d,colorfunc
Maple Advisor Database R. Israel 2000