MapWindow 4 - Desktop Application : MapWindow Discussion Forum
I tried to load a large image file into MapWindow 4.8.3, but it is not shown. The map view area hangs and does not show anything anymore. The image file is a 57MB Windows Bitmap, 24bpp. It's 58241x512 pixels in size. Smaller image files load perfectly. Is 87MB the limit for MW?
size limit images exceeded?
Posted by: JosP ()
Date: July 13, 2011 07:22AM

I tried to load a large image file into MapWindow 4.8.3, but it is not shown. The map view area hangs and does not show anything anymore. The image file is a 57MB Windows Bitmap, 24bpp. It's 58241x512 pixels in size.

Smaller image files load perfectly. Is 87MB the limit for MW?

Options: ReplyQuote
Re: size limit images exceeded?
Posted by: pmeems ()
Date: July 13, 2011 03:02PM

We use several image files and formats over 80MB in our tests without any trouble.
We even have an Erdas image of almost 200MB.

But I believe a 58214*512 pixel image is in memory over 220MB.
It might be wiser to create a pyramid GeoTiff of your file. That will at least increase the load speed and might solve your problem.

--
Paul

--
Don't forget to read the new documentation: www.mapwindow.org/documentation/mapwingis4.8
Join us Google+: MapWindow GIS Google+ Community
Join the MapWindow Group on LinkedIn! LinkedIn - MapWindow Group

Download the latest beta installer at:
tinyurl.com/mwMonthly 32-Bit
tinyurl.com/mwMonthlyx64 64-Bit
Follow me on Twitter MapWindow_nl to read when a new installer is published.

---
Paul Meems
The Netherlands
[www.bontepaarden.nl]
Release manager, configuration manager and
forum moderator of MapWindow GIS

Owner of MapWindow.nl - Support for
Dutch speaking users: www.mapwindow.nl

*******
Everything I say or write is my personal opinion and
not the opinion of the company I work for.
*******
View my profile on LinkedIn

Options: ReplyQuote
Re: size limit images exceeded?
Posted by: JosP ()
Date: July 14, 2011 03:59AM

Thanks for your reply Paul. Is suspect there something wrong because when I monitor the mapwindow.exe process in the taskmanager while adding the image nothing changes in memory or cpu. Maybe there is something wrong in the file header of the bitmap. I'll investigate this further.

JosP

Options: ReplyQuote


Sorry, only registered users may post in this forum.





Banner Exchange




GISCP.com




Send us your banner logo (160x120) for the space above, and add this MapWindow banner ad to your site:

Just paste this text in your page: