[Qgis-user] jumping scale

[Werner Macho]

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?