drawin 2D circle

hi all i want to make a circle in which i can change the the sound source in 360 plane.the sound source can be changed either by mouse cursor or by sliding some slider. any help in this regard will b highly appreciated.

[Jan]

What have you done so far and wich problems have occurred?

[muhammad tariq]

actually i have made a rectangular shaped fig. and am using sliders for uicontrol.i drag the sliders and move the sound source (like '*' or 'o' representing source)on the rectangular figure to the required angle on 2D plane.now i want to do the same thing on a circle that is to move the sound source on the circumference around the complete circle ...

the circle should show angles as -90 deg at left and 90 deg at right of circle and 0 deg front with some intermediate angles shown (like -70 -50 -40 in 2 quadrant and 40 50 70 in 1st quadrant).the same angles should be repeated in lower semicircle also.help me out in making such uicontrol.

thanks in advance

Answer 1

[Image Analyst]

Did you see the FAQ?

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

[muhammad tariq]

to make a simple circle is not a matter infact what i have to do is.

actually i have made a rectangular shaped fig. and am using sliders for uicontrol.i drag the sliders and move the sound source (like '*' or 'o' representing source)on the rectangular figure to the required angle on 2D plane.now i want to do the same thing on a circle that is to move the sound source on the circumference around the complete circle ...

the circle should show angles as -90 deg at left and 90 deg at right of circle and 0 deg front with some intermediate angles shown (like -70 -50 -40 in 2 quadrant and 40 50 70 in 1st quadrant).the same angles should be repeated in lower semicircle also.help me out in making such uicontrol.

thanks in advance