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Map Zoom setting loses calibration of map.

 
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Russell23



Joined: 15 Dec 2009
Posts: 22

PostPosted: Sun Apr 19, 2015 6:03 pm    Post subject: Map Zoom setting loses calibration of map. Reply with quote

I have a map that I created by cutting and pasting screen grabs as jpegs and then calibrated it using mapc2mapc. This has worked on many devices very sucessfully over 3 or 4 years.

My new tablet, a Nexus 7 2014, has a much higher screen resolution and so the same map displays too small to be useful. I can set the desktop/map zoom setting to 200% and this allows a usable display. But the calibration is now out by a very large amount.

The map file is a .gmi. There is also a .map and a .set of the same name. The map tiles are in the set directory as .png files.

Is this a bug, is there a work around and/or is there a different way of doing this?

Thanks

Russell
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kruch
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Joined: 02 Jul 2006
Posts: 5664

PostPosted: Tue Apr 21, 2015 8:40 pm    Post subject: Reply with quote

gmi is very simple format without projection info, so simple Lat/Lon is assumed (which is unlikely to be really the projection of most maps). With 200% zoom, such calibration may be quite bad.

If it is not too big, could you upload it somewhere?
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Russell23



Joined: 15 Dec 2009
Posts: 22

PostPosted: Wed Apr 22, 2015 1:48 pm    Post subject: Reply with quote

Hi kruch

Thanks for replying. I have uploaded the files to Google Drive. They total about 47MB. If you let me have an email address (by PM) I'll share it with you.

Thanks

Russell
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Russell23



Joined: 15 Dec 2009
Posts: 22

PostPosted: Wed Apr 22, 2015 2:31 pm    Post subject: Reply with quote

Email sent with link to Google Drive.

Russell.
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