[opendx-users] Clipping

[Gib Bogle]

I have a big image (a surface) that I want to extract a piece of.  Because I am zooming in I need to increase the grid resolution to avoid the jaggies.  Clipbox allows me to select the subregion, but since it does not reduce the memory requirements I still run out of memory when I try to refine the grid.  Is there any way to select a subregion (e.g. a rectangle) that also reduces the memory requirements?  The only other way I can think of to do what I want to do would be to edit the input datafiles.  One of these is easy to handle since I create it, the other is a TIFF file.  Which raises a second question: can someone suggest a good public domain TIFF editor that I could use to extract a specified rectangle?   thanks Gib NOTICE - This e-mail is only intended to be read by the named recipient. It may contain information which is confidential, proprietary or the subject of legal privilege. If you are not the intended recipient please notify the sender immediately and delete this e-mail. You may not use any information contained in it. Legal privilege is not waived because you have read this e-mail. For further information on the Beca Group of Companies, visit our web page http://www.beca.co.nz