[GEM-dev] pix_crop y coordinates

Hi,

I'm realising that pix_crop x/y coordinates work as follows:

- x grows from left to right - y grows from bottom to top

Isn't it a bit weird (the y part)? I know coordinate systems are always arbitrary but, aren't digital images rows almost universally counted from top to bottom? Isn't that even how they are stored in image files and memory?

You may argue that this is for uniformity with Gem's coordinate system that has the Y axis pointing upward, but then pixels are not gem units....

Is there a clear advantage in using this convention against the almost universal one? Or am I plain wrong about the latter being an almost universal convention?

thanks m.