How to generate a random data set with elliptical shape ?

hi,everybody I want to generate a random data set with an elliptical shape,the data can be on the elliptical edges or inside it, for example :an ellipse is :(x^2)/5^2+(y^2)=1

Answer 1

[Image Analyst]

Roger has a good answer: http://www.mathworks.com/matlabcentral/answers/77724#answer_87442

[icey]

Thank you very much,I have seen this answer,and have done the experiment with first answer,the performent doesn't good for my requirement,next I will try to write code with you suggestion. thank you!