<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">thank you michael,<div>I learned a lot from your suggestions ( I also refreshed my knowledge about projections) and I improved my capacity with qgis.</div><div>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.</div><div>I guess now that as you suggested one of the two groups are not correcly referenced. I will discuss with providers.</div><div><br></div><div>Now a <b>further question</b>. I opened qgis prefs and set the locale to "IT" or "it" (italian). The first gave russian characters as local; </div><div>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.</div><div> 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 ?</div><div><br></div><div>Thank you all</div><div>Bernardo</div><div><br></div><div><br><div><div>Il giorno 08/ott/08, alle ore 21:29, Michael Neubauer ha scritto:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hello Bernando,<br><br>first: When you change the projection (or better "spatial reference system") <br>in the project properties, it does not change the "spatial reference system" <br>in the data of your layer. Transforming your data to another "spatial <br>reference system" would be a more complicated operation.<br>But the good thing is, that with OTF activated, you do not have to do that and <br>you can superpone layers in different "spatial reference systems".<br>So do not wonder that the projection of your layer stays the same, when you <br>change the projection of the whole project. Changing the projection of the <br>whole project should only have an effect on the coordinates which are <br>displayed (right bottom of the screen)<br><br>second: UTM is a "projected coordinate system" in contrast to "geographic <br>coordinate systems". "Geographic coordinate systems" treat the earth like a <br>sphere and work with degrees. "Projected coordinate systems" project the <br>spere (ball earth :-) ) on a flat surface and deal with other numbers, which <br>are defined in each coordinate system differently.<br>UTM stands for "Universal Transverse Mercator" and you find it at the bottom <br>of "projected coordinate systems" in QGIS (between "geographic coordinate <br>systems" and "user defined coordinate systems").<br>So you have to look for "WGS84 / UTM zone 32N" --> N for northern hemisphere.<br><br>So I hope that practical and theoretical information helps... :-)<br>Let me know if everything works<br><br>bye<br>michael<br></div></blockquote></div><br></div></body></html>