How do I draw a pixel in a random spot within multiple image

[Bonzo]

This will draw a 1 pix rectangle on an image overwritting the original.

Code: Select all

mogrify -fill red -draw \" rectangle 30,30 31,31 \" sunflower.jpg

You will need to change the values to presumably a variable; as you have not said what API or php etc. you are using I can not give any further information.