To plot an ellipse

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Priya
Priya on 12 May 2014
Commented: Waqar Khan on 18 Mar 2021
Hi,
I have got the semi axes, with that how to plot an ellipse in matlab. I have tried using the function 'pdeellip', but it didn't work out. Please do help.
Thanks in advance.

Accepted Answer

Image Analyst
Image Analyst on 12 May 2014
  4 Comments
D_coder
D_coder on 16 May 2020
Edited: D_coder on 16 May 2020
how would this line plot change for an ellipsoid , I mean 3d?
Image Analyst
Image Analyst on 16 May 2020
Use the ellipsoid() function:
[x, y, z] = ellipsoid(0,0,0,5.9,3.25,3.25,30);
figure
surf(x, y, z)
axis equal

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More Answers (1)

Waqar Khan
Waqar Khan on 18 Mar 2021
Hi there, I need help with creating ellipse, I have X = 0.666 and Y=0.87 values, I need to make ellipse from X and Y, kindly guide me. Looking forward to hearing from you.
  10 Comments
Walter Roberson
Walter Roberson on 18 Mar 2021
Note: The P in the equation for G controls how quickly the Gaussian drops off. You should decide more carefully how much you want the gaussian to fall off by the edge of the ellipse.
Also note that what this implements is a circular guassian "clipped" by an ellipse. You could instead make the gaussian itself elliptical, by modifying distance from the center according to the ellipse parameter.
IIt is possible that what you need to do is construct an elliptical gaussian filter, such as for blurring purposes. You would proceed a bit differently in a case like that.
Waqar Khan
Waqar Khan on 18 Mar 2021
Noted, Thank you so much once again, i am reading it carefully.

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