Plotting a simple shape in Matlab

Hello,

I want to plot part of x >=y and 0=<z<pi in Mathlab. I will eventually have data and curves inside these bounds but I need to plot this for starters. Any ideas?

Thanks!

Answer 1

[Martin Schätz]

Hi, if you don't know the bounds for x and y you don't have enough info to plot some shape, easiest would be to prepare setings of your axis. You can use similar command:

axis([xmin xmax ymin ymax zmin zmax cmin cmax]) % sets the x-, y-, and z-axis limits and the color scaling limits (see caxis help for more info) of the current axes.

so if we use ezplot3 for now instead plot3

figure
ezplot3('sin(t)','cos(t)','t',[0,6*pi])

with what you want, it might be like this:

%zmin=0;  %min of z
%zmax=pi; %max of z
%xmin=min(x); %not specified
%xmax=max(x); %x >=y
%ymin=min(y); %not specified
%ymax=max(x); %x >=y
%axis([xmin xmax ymin ymax zmin zmax])

but we need some real values now, so lets say x=0->1 y=0->2 z=0->3

axis([0 1 0 2 0 3])

and we will get: