[Qgis-user] wg84 projection problem

[Markus Nater]

thank you Alex
and thank you Otto

when I do take a projected coord system (set to wgs84 zone 47N), the 
measurements are correct.
but then arises a new problem, as I have a raster shaded relief as 
geotiff overlayed, that is referenced in wgs84. projection on the fly 
makes this raster invisible... strangely! and I havent found out how to 
work around this yet. i cant work out to reproject this raster either, 
somehow nothing ever happens using the gdal raster translation.
any ideas how to solve this little problem? :-)

cheers
markus


Alex Mandel schrieb:
> Markus Nater wrote:
>   
>> Hi List
>>
>> I have some polygons in qgis with wgs84 projection. But when I try to
>> measure distance in meters, it gives me back 1cm for 0.1 degrees, which
>> is of course totally wrong.
>> how can I fix this, so I will have the correct measurements in meters?
>>
>> cheers
>> markus
>>
>>     
>
> Enable projection on the fly, and pick a projected coordinate system.
> Technically in WGS84 the best you could get is great circle distances,
> and I'm not sure the measure tool does this yet. So you need to be in a
> projection that flattens the map evenly for distance measurement.
>
> Alex
>
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