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Date Posted: 06:26:10 12/18/00 Mon
Author: tjorvi
Subject: Partial loading of images

Does Envision support partial loading of images. I have been looking at the demo program and noticed that when I zoom into the images the memory allocation of the program grows significantly. I am dealing with large images, like 30-200 megabytes and when I zoom into 200% then the demo application takes like 160 megabytes of memory for the 30 megabyte image. I want to dynamically load the images as the user requires the data to minimize the memory consumption of the application.

1) Does Envision support this automatically, if not then
2) Can I do this using Envision unmodified, if not then
3) Do you think this would be very difficult by changing the envision source code.

One final question: Do you know of any work being done using Envision on mapping software. I want to write a simple geographical software package showing GPS locations etc or avoid doing it myself if someone has already done it.


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