MATLAB is a mathematical and statistical analysis package produced by
software company MathWorks Inc. MATLAB contains a number of built-in
numerical and graphical functions, and as it is essentially a
programming language, it is highly customizable. If you need to draw a
circle and mark a specific point in that circle, you can do so with
complete accuracy using the coordinates system built into MATLAB.
Instructions
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1
Launch MATLAB. Click File and
select Open. Browse to the location of the project to which you wish to
add the circle on your computer's hard drive, then double-click it to
load it into MATLAB. If you want to perform this operation on a new
project, click File and then select New instead of Open.
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2
Click File and select New M-File. A new MATLAB editor window will appear.
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3
Type the following into the first line of the editor window:
pdecirc(xc,yc,radius,name)
Replace “xc” and “yc” with the x- and y-coordinates of the center of
the circle. Replace “radius” with the radius you want the circle to
have. Then replace “name” with a descriptive label for the circle. For
example, the following line would create a circle at the zero point in
the coordinates, with a radius of 10 units and the label “circle1”:
pdecirc(0,0,10,circle1)
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4
Type the following line of code into the editing window, directly below the line you just typed:
plot(x,y,'r.','MarkerSize',size)
Replace “x” and “y” with the x- and y-coordinates at which you want
to position your point. Then replace "size" with the size that you want
the point to be.
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5
Run the program by clicking the
"Run" button, which looks like a green triangle. A circle with a point
marked at the coordinates you specified will now be drawn.
