[Qgis-developer] Composer grid issue

Marco Hugentobler marco at hugis.net
Tue Oct 20 02:26:36 EDT 2009


Hi John

Thank you for reporting. I'm currently implementing the possibility to rotate 
the composer map and this changes a lot in the composer grid code. Therefore, 
I'm going to address this issue after the rotation code is in trunk.

Regards,
Marco

Am Montag, 19. Oktober 2009 22.44:56 schrieb John C. Tull:
> Marco,
>
> I was excited to see the new map composer grid feature. I tried it out
> on some field maps last week and found out that the grids were not
> accurate. I believe you might be able to reproduce an error with the
> attached test file. It appears to be a dpi issue, for some reason.
>
> Here are my steps:
> 1) Open a new qgis canvas and add the attached shapefile.
> 2) Verify that the projection (CRS) is set to epsg 26911 for the
> project.
> 3) Zoom in to a subset of the grid at approximately 1:100000 scale.
> 4) Open the map composer and add the map canvas to the composer canvas.
> 5) Turn on the composer grid with a 5000x5000 spacing.
> 6) Now, zoom in the map composer 4 or 5 times.
> 7) With the map layer selected, update the preview and note the offset
> between the two grids.
> 8) Output a png image at 300 dpi (should look correct).
> 9) Output a png image at 200 dpi (the offset should show).
>
> On another note, it would be nice to be able to suppress the
> scientific notation of the grid labels. In the UTM example I have, the
> scientific notation is actually a larger label than the full integer
> value.
>
> Cheers,
> John

-- 
Dr. Marco Hugentobler
HUGIS - GIS programming and consulting
Webereistrasse 66
CH-8134 Adliswil
marco at hugis.net
http://homepage.hispeed.ch/hugis


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