Cropping bitmap images

[michaelk]

I know how to resize .bmp files in Dyalog, but is there a simple way to remove/crop say the top 10% or the right 10% of a bitmap image without changing the scale of the rest of the image? The answer may be somewhere in the manuals (sorry if this is a silly question), but I haven't found it.

[PhilGray]

sorry if this is a silly question

... then maybe this answer is too simple ?
Presuming your Object is a 'Bitmap', simply use the 'CBits' property ( Integer Matrix ) to drop ( dyadic ↓ ) any chunk of the matrix you please.

[michaelk]

Thanks. This works well.