Hi!

Realised the same behaviour a few month ago but never had time to investigat - someone i talked to said something about "different projections cause this". Personaly i believe that this is a bug anywhere in the scaling routine.. cause it changes way too fast while only moving the map.

I hope someone here can clear this out..
If you find out something about it please tell it to me too ;)

all in all I can reproduce this behavior and also wonder why it's changing.

regards Werner


Richard Duivenvoorde schrieb:
Hi list,

I'm trying to make it possible to print maps for people using qgis on a fixed scale. But that seems not possible

Eg: when I zoom to a certain extent is see:
    1:1126768656
in the "Scale"-info bottom right of mapwindow.

So i want to set it to a fixed value, say 1:1000000000

When I paste this in the Scale info indeed it zooms in, but whenever I pan a little, the value changes, jumpes from
1:1019086421
1:857490397
1:41862232
1:504222197
etc
just by panning a couple of 100 meters.

Tried it with data both in dutch coordinate system (epsg:28992) as with a simple world map (epsg:4326). Both seem to have this behaviour.

People have any idea?

Tried using the python console, and while I can get a scale(), or a mapUnitsPerPixel() there is now way to SET it?

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