[Qgis-user] reference raster layers

[Michael Neubauer]

Hello Bernando,

sad to hear, that your initial problem is not solved. I don't know, maybe 
somebody else here on the list has another idea...
When you found a solution or you got a response from the providers please tell 
me... I am curious.
Have you ever tried it on some other GIS-programme? This would helpt to check 
about the qualitiy of the data or wheater it is a settings problem in QGIS.

About the second question I don't know. I have not played around much in these 
options. Do you have "Override local system" activated?
Maybe also somebody else here has an idea...?

When nothing else helps ---> install QGIS new and remind to erase the 
configuration files (depending on you OS)

bye
Michael


Am Freitag 10 Oktober 2008 11:41:16 schrieb Bernardo Rossi Doria:
> thank you michael,
> I learned a lot from your suggestions ( I also refreshed my knowledge
> about projections) and I improved my capacity with qgis.
> In fact I did not solve the problem of overlap my files with different
> original projection (UTM  Shapefile and WGS84 geoTIFF & shapefile)
> even if now they output in a closer position.
> I guess now that as you suggested one of the two groups are not
> correcly referenced. I will discuss with providers.
>
> Now a further question. I opened  qgis prefs and set the locale to
> "IT" or "it"  (italian). The first  gave russian characters as local;
> I gor back to preferences and I looked for "en" again  but it had
> disapeared so  I tried the second wich is  is realy italian.
>   But in this way I find impossible to get back to preferences because
> it is grayed... Is it a bug? I tried also via keyboard  (command ,)
> with no response.   How to go to preferences ?
>
> Thank you all
> Bernardo
>
> Il giorno 08/ott/08, alle ore 21:29, Michael Neubauer ha scritto:
> > Hello Bernando,
> >
> > first: When you change the projection (or better "spatial reference
> > system")
> > in the project properties, it does not change the "spatial reference
> > system"
> > in the data of your layer. Transforming your data to another "spatial
> > reference system" would be a more complicated operation.
> > But the good thing is, that with OTF activated, you do not have to
> > do that and
> > you can superpone layers in different "spatial reference systems".
> > So do not wonder that the projection of your layer stays the same,
> > when you
> > change the projection of the whole project. Changing the projection
> > of the
> > whole project should only have an effect on the coordinates which are
> > displayed (right bottom of the screen)
> >
> > second: UTM is a "projected coordinate system" in contrast to
> > "geographic
> > coordinate systems". "Geographic coordinate systems" treat the earth
> > like a
> > sphere and work with degrees. "Projected coordinate systems" project
> > the
> > spere (ball earth :-) ) on a flat surface and deal with other
> > numbers, which
> > are defined in each coordinate system differently.
> > UTM stands for "Universal Transverse Mercator" and you find it at
> > the bottom
> > of "projected coordinate systems" in QGIS (between "geographic
> > coordinate
> > systems" and "user defined coordinate systems").
> > So you have to look for "WGS84 / UTM zone 32N" --> N for northern
> > hemisphere.
> >
> > So I hope that practical and theoretical information helps...  :-)
> > Let me know if everything works
> >
> > bye
> > michael