[Maptitude] tif image kills Maptitude

Tue, 20 Sep 2005 15:15:53 -0700

I have a TIF I got from Peru's mapping agency, a scan of a paper map. They are rather large.  When I try to read this file into Maptitude it allows me to specify a coordinate system, South and Central America, Peru central zone.
 
When I choose OK Maptitude immediately dies, (memory error). Sometimes it works but then if I try to zoom in it crashes.
 
If I read the same TIF into IrfanView (light graphics editor/viewer) it is read in  with no problem.  If I export it out as a TIF and check that there is no compression (a compession dialog box appears which appears to think is is LZF compression. It may be)
 
Then I can read in the file into Maptitude. The file is about 400m, but Maptitude will take it. I tried the same procedure of exporting to EMF and then reading it in and exporting as a TIF. This works too.  However if I choose a coordinate system and try to register it, when I press the register button the image disappears. (I have the signs, etc right on the reference longs/lat.  ??
 
 
Anyone have ideas about is happening?
 
1. why does the original TIF (possibly in LZW compressed format) killing Mpatitude?
 
2. Why when I choose REGISTER the image disappears, but the long/lat that appear under the pointer tool are reasonable/
 
Any ideas?
 
 
--
Richard E. Hoskins, PhD MPH
Faculdad Salud Publica
Universidad Peruana Cayetano Heredia
Av Honorio Delgado No 430
Lima 31, Perú


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