NSImage has a tough time with certain TIFF files in 10.2.5?
NSImage has a tough time with certain TIFF files in 10.2.5?
- Subject: NSImage has a tough time with certain TIFF files in 10.2.5?
- From: Steve Mykytyn <email@hidden>
- Date: Mon, 28 Apr 2003 11:33:15 -0700
While some very large TIFF files generated by federal and state
agencies are easily displayed using the standard NSImage
compositeToPoint method, others just don't display. These are both
"geoTIFFS" an extension of the TIFF format with some additional tags
related to mapping.
Example of TIFFs that won't display using NSImage compositeToPoint
Digital Raster Graphics (DRG) files, which are reprojected versions of
topographic maps
http://drg.casil.ucdavis.edu/drg.cgi
a specific file:
http://drg.casil.ucdavis.edu/7.5_minute_series/h/half_dome/drg-
o37119f5-tr-alb.tar.gz
Example of much larger TIFFs that WILL display
Digital Ortho (Quarter) Quads (DOQQ), which are reprojected aerial
photos
http://casil.ucdavis.edu/casil/usgs.gov/doqq/
a specific file:
http://casil.ucdavis.edu/casil/usgs.gov/doqq/37119/o37119f5nw.tif
Preview and GraphicConverter both display all of these. The Sketch
application seems to only display the DOQQs, not the DRGs, which is why
i'm hoping it's not something i did...
Suggestions or counter-examples?
_______________________________________________
cocoa-dev mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/cocoa-dev
Do not post admin requests to the list. They will be ignored.