producing/ coding a circle in matalab

i want to code a circle which has centre(0,0) and diameter 2,,,spanning from -1 to 1 for both axes.....how do i code this?

i would appreciate your help ... thanks

Answer 1

[Image Analyst]

See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_create_a_circle.3F