Re: 2D Plots

"Anton " <sp6048@xxxxxx> wrote in message <gha0v6$amq$1@xxxxxxxxxxxxxxxxxx>...
New to MATLAB - simple question - how do I 'fix' the axes (so that they always intersect at (0,0), for example) in a 2D plot? EG: I want to plot a unit circle with axes intersecting at origin in middle of plot ...


Hi Anton ;

I found what you asked about ( drawing unity circle with axes intersecting at origin in middle of plot ) here there are two codes you could try :

1st code ( commonly used ) ( center (0,0) & radius = 1 )
th=0:0.1:2*pi;
x=1*cos(th);
y=1*sin(th);
plot(x,y)
grid

2nd code ( center (0,0) & radius = 1 ) but with equal scale of axis
th=linspace(0,2*pi,1000);
x=1*cos(th);
y=1*sin(th);
plot(x,y)
grid
axis equal
Try both & note the difference
I hope i had answered your question
.

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