text out on axes

I load an image onto an axes and want to display text in the top left hand corner. As I often display the image at different zoom factors, using the text using x,y wont work for all Zoom factors. Is there away to say irrespective of zoom, always plot at a certain coordinate on the underlying axes?

[Jason]

I will give it a go thanks. Was just wondering if you could text onto an image but use locations from the axes. Thanks IA

Answer 1

[Mike Garrity]

Yes, text has a 'Units' property. If you set this to one of the "screen space" units (I just made that term up), then it is relative to the lower-left corner of the axes.

For example:

text(2*72, 1*72, 'My String', 'Units', 'points')

Will create a text string which stays 2 inches in from the left and 1 inch up from the right (a point is 1/72 inch), even when you pan or zoom.

Answer 2

[Image Analyst]

Can't you just divide the x,y by the zoom factor and text() it with those adjusted coordinates?