Author Topic: Zooming in on a user map. (Read 4981 times)

sgreen · « **on:** January 18, 2009, 01:20:11 AM »

When I add a user map and then try to zoom in for a close look at part of it, it disappears. My user map covers a fairly small area, less than .5 miles wide. Is there any way to keep it visible when zoomed way in?

ScottMorris · « **Reply #1 on:** January 18, 2009, 10:00:31 AM »

It shouldn't disappear no matter how small an area the map covers.

I'll do a quick experiment to see if I can duplicate the problem. Thanks.

ScottMorris · « **Reply #2 on:** January 18, 2009, 10:07:49 AM »

It doesn't seem to be a matter of scale. I just tried a small map and was able to zoom in beyond the point of pixel recognition.

Are you using 3 calibration points? In any case, could you post (or email to support@topofusion.com) a screenshot of what the map and calibration points look like? (Hit the "Calibrate by Hand" tool so the calibration points show up).

Thanks.

sgreen · « **Reply #3 on:** January 18, 2009, 05:28:00 PM »

I'm doing three point calibration using my own points to rotate the user map.

You can see a screen shot at http://picasaweb.google.com/sgreen.sgreen/Misc#5292785974316376098

The user map disappears when I zoom in farther than the view shown there, or when I pan the map so that more than about 1/2 of the user map is out of view.

I'm using TopoFusion Pro 3.61 on Windows Vista Home Premium. The user map is a 1.12MB jpeg, 7125x2708.

Thanks for the help. -- Â SG

ScottMorris · « **Reply #4 on:** January 18, 2009, 07:29:35 PM »

Thanks for the screenshot. I was able to duplicate it by setting up one of my maps with similar calibration points.

There was a clipping test that wasn't robust to images flipped at ~45 degrees. It was over clipping, basically.

It was an easy fix and will be available in the next beta version (hopefully out in the next day or so). Would you like an email when it's available?

sgreen · « **Reply #5 on:** January 18, 2009, 07:42:18 PM »

Thanks for the quick response!

An email about the fix would be welcomed.

-- SG

ScottMorris · « **Reply #6 on:** January 21, 2009, 08:56:30 AM »

Beta version with fix available now at:

http://topofusion.com/beta.php

(Registered users only) -- should be a full release out soon.