[Qgis-user] Google with OTF - as XML

[Andreas Neumann]

Hi,

 From a technical point of view it seems to work. But as Nyall said, you 
are not allowed to use Google tiles directly and print out your own 
layers on top of it. For that reason we can't add any Google layers to 
QGIS - officially.

I tried it out - for aerial images the reprojection works fine (if one 
also uses bilinear/cubic/average interpolation) - but the maps with 
lineart and labels look really, really ugly after they had been reprojected.

If you print out at high resolution - again the aerial images look fine, 
but the higher you increase the resolution, the thinner the road 
symbology gets and the roads get labeled way too often - so not very 
pretty from a (carto)-graphical point of view. I was impressed though 
that you can also print at very large sizes (I tested an A0 map wirh my 
layers and Google images in the backdrop - it took very long to render, 
but it worked). If you use this too often, there is also the risk that 
Google blocks your IP address.

The Swiss OSM association offers tiles in the native Swiss projection. 
This allows to print much nicer maps than with Google maps. See 
http://sosm.ch/swiss-lv95-projected-tiles/ and you can use the attached 
xml file to open as a raster image. I think it would be a good idea if 
other national OSM associations would offer their data in the native 
national coordinate system. Something to discuss with your local OSM 
gurus ...

The nice thing about this tile-map GDAL provider is that you can 
manipulate the raster on the fly (e.g. convert it to black and white, 
make it darker or lighter, change contrast or colors globally, etc.)

Andreas

On 20.12.2015 00:34, Lene Fischer wrote:
> Hi,
> Just got a small Christmas present from my husband. 6 XML files  :-)
>
> Containing Google and Streetview. And then you might say 'Yeah we already got that in OpenLayer Plugin' - Correct. But when I use OpenLayer, the vector layers always fly around and calculations mess up.
>
> So now I got the XML files.
> Renamed to Zip and Unzipped the files. Open as Raster.
> They are now changed in the 'On The Fly' - in any CRS I want.
>
> Now I´m looking forward to my real Christmas Present - Hope Bo read this mail so he don´t forget  ;-)
>
> Regards
> Lene Fischer
>    
>
>
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