Plot circle in meters

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Josh on 13 Mar 2015
Commented: Brandon on 13 Mar 2015
Hi,
I'm trying to plot several circles 5 meters in size within a room represented by the gird
pos = [0 0 5 5];
pos2 = [10 10 5 5];
pos3 = [20 20 5 5];
pos4 = [30 30 5 5];
rectangle('Position',pos,'Curvature',[1 1])
rectangle('Position',pos2,'Curvature',[1 1])
rectangle('Position',pos3,'Curvature',[1 1])
rectangle('Position',pos4,'Curvature',[1 1])
axis equal
axis([0 100 0 100])
I'm using the axis to represent the room size so in this case 100 meters by 100 meters. Sometimes the room size might vary say double so 200x200 and the graph then scales and everything gets smaller.
What I was hoping is everything stayed the same size but the graph grew its size rather than scale it down the fit within the small graph size
Is this possible
Thanks

Brandon on 13 Mar 2015
Try something like this:
figure();
AX(1) = axes;
axis equal
hold('on');
set(AX(1), 'XLim', [0 100], 'YLim', [0 100]);
XC = 2.5*sin(linspace(0,2*pi,100)); YC = 2.5*cos(linspace(0,2*pi,100));
h(1) = fill(XC + 50, YC + 50, 'r'); % create circle
Brandon on 13 Mar 2015
You just need to express the circle size as a percentage of the room size. In this case I set the room to be 100 and the circle size to be 2.5. You can set the room size to be n and the circle size to be n/10.