Hi.<br>Now I have found how I get all tings backwards and wrong :)<br>By just going to <b>Settings-->Options-->CRS</b>, does NOT change the current project, of course.... For that you need to go to <b>File-->Project properties</b>. Thanks for your time<br>
<br>Cheers.<br><br><div class="gmail_quote">2012/9/23 Johan Nilsson <span dir="ltr"><<a href="mailto:joni8135@gmail.com" target="_blank">joni8135@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
If i said in the beguinning of my post I can transform, by save layer as shape, and there choose the RT90 coordinate-system (it say it is in wsg 84). It just when I add a different layer, the transformation to metric system, it's fail.<br>
<br>/Cheers<br><br><div class="gmail_quote"><div class="im">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Bo Victor Thomsen</b> <span dir="ltr"><<a href="mailto:bo.victor.thomsen@gmail.com" target="_blank">bo.victor.thomsen@gmail.com</a>></span><br>
</div><div><div class="h5">
Date: 2012/9/23<br>Subject: Re: [Qgis-user] gfx in WSG 84 added to another CRS (EPSG:3021)<br>To: Johan Nilsson <<a href="mailto:joni8135@gmail.com" target="_blank">joni8135@gmail.com</a>><br><br><br>
<div bgcolor="#FFFFFF" text="#000000">
<div><br>
The QGIS on-the-fly re-projection mechanism is able to manage both
different ellipsoids, projections and coordinate units. <br>
Could the definition of EPSG:3021 in QGIS be wrong ? I'm am 100%
sure, that QGIS handles lat/long wgs84 (EPGS:4326) correct. What
happens if you convert and re-project the GPX file to
shape/EPSG:3021 with ex. <b>ogr2ogr</b> (<a href="http://www.gdal.org" target="_blank">www.gdal.org</a> - no QGIS
involved). Is your converted data then placed correctly ?<br>
<br>
Regards<br>
Bo Victor Thomsen<br>
<br>
<br>
09-2012 13:16, Johan Nilsson skrev:<br>
</div><div><div>
<blockquote type="cite">Don't work<br>
May it be that CRS have at least to components? Projections
(Shape-models of the earth) and Coordinate-system (defined as a
grid from Equator and Greenwich, but different according to the
place on earth), and Enable 'on the fly' reprojections don't
change units from degrees to the metric Coordinat-system?<br>
<br>
/Cheers<br>
<br>
<div class="gmail_quote">2012/9/21 Bo Victor Thomsen <span dir="ltr"><<a href="mailto:bo.victor.thomsen@gmail.com" target="_blank">bo.victor.thomsen@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>
<div>
<ol>
<li>Choose a CRS for your _project_ using the menu
"Settings" --> "Project properties" --> Tab
"Coordinate Reference System (CRS) and choose the
CRS from the dialog. Remember to enable "on the fly
CRS transformation"</li>
<li>Open your layer(s). Don't think about the
projection here.<br>
</li>
<li>Right-click on each of your layer(s) in the
"Layers" dialog and choose "Set layer CRS". If
necessary, choose the CRS for the individual layer.</li>
</ol>
In some cases the CRS for a layer can't be inferred from
the information in the layer's datafile or QGIS can't
read it correctly. Executing step 3 for each "problem"
layer corrects this problem.<br>
<br>
Regards<br>
Bo Victor Thomsen<br>
Aestas-GIS<br>
Denmark<br>
<br>
<br>
Den <a href="tel:21-09-2012%2009" value="+12109201209" target="_blank">21-09-2012 09</a>:23, Johan Nilsson
skrev:<br>
</div>
</div>
<blockquote type="cite">When I click Layer-->'Add vector
layer.....' I can browse for files, shp, gpx, and so on,
but never chose an CRS in that menu. My Background map are
in RT90 coordinate system in meters approx 1500000,6500000
m but gpx files come to 17 and 60 m (not degree), way ot
of the map...
<div>
<div><br>
<br>
/Cheers<br>
<br>
<div class="gmail_quote">2012/9/21 leyan ouyang <span dir="ltr"><<a href="mailto:ouyang.leyan@hotmail.com" target="_blank">ouyang.leyan@hotmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div dir="ltr"> Yes it is possible, the option
"on-the-fly reprojection" does just that.
Choose the main CRS as the project CRS (it
will be used for distance calculations, etc.).
Then when you add a layer you can choose its
CRS individually, QGIS will do the
transformation.<br>
<br>
Regards,<br>
<br>
Leyan<br>
<br>
<div>
<hr>Date: Fri, 21 Sep 2012 09:08:05 +0200<br>
From: <a href="mailto:joni8135@gmail.com" target="_blank">joni8135@gmail.com</a><br>
To: <a href="mailto:qgis-user@lists.osgeo.org" target="_blank">qgis-user@lists.osgeo.org</a><br>
Subject: [Qgis-user] gfx in WSG 84 added to
another CRS (EPSG:3021)
<div>
<div><br>
<br>
Hi.<br>
I can transform gpx file from a GPS
(WSG84) to an old swedisch CSR EPSG:3021
(RT90 2,5 gon V metric coordinate
system)) shape file, but I whant to let
the program transform on the fly.<br>
<br>
I know that year 1999 Silicon graphic
had it on there 'super coomputers' and
GIS-softwate, and I also see that QGIS
have under menue:<br>
<b>Settings-->Options-->CRS</b>-tab
have an option to check 'on the fly
reprojection' in option.<br>
<br>
Under options-->CRS can you define
default project CRS and defaut CRS to
what your add in layers, but If you have
a lot of old files with diffenent CRS it
could be errors. Now Sweden is in
transition from RT90 to SweRef99 (very
near WSG84)<br>
<br>
Is it possible to add vector files with
other CRS, or even rasters to a project
without transform it?<br>
<br>
/Cheers<br>
<br>
<br>
</div>
</div>
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