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<i><font color="#3333ff">Actually, this is worse than I thought.
QGIS is not recognising AGD84 or GDA94. The data comes in but
isn't attributed a CRS so defaults to WGS84.<br>
If you import the text file as AGD84, then again as GDA94, there
should be approx 195m separation. QGIS plots them in exactly the
same place.</font><font color="#3333ff"> </font></i><br>
<blockquote cite="mid:4C9706C4.3000604@arava.co.il" type="cite">
<br>
<blockquote type="cite"> Micha,
<br>
Sorry but I can't get your suggestions to work. I tried this a
couple of times but it fails every time.
<br>
<br>
Settings->Options-CRS window is already set to "Prompt for
CRS"
<br>
</blockquote>
And when you next import the csv, does it indeed prompt for the
CRS?
<i><font color="#3333ff">It does. But when I go to
Settings>>Project properties the CRS is WGS84.</font></i><br>
</blockquote>
<br>
<blockquote cite="mid:4C9706C4.3000604@arava.co.il" type="cite">
<blockquote type="cite">
<br>
Tried changing the global to AGD84 / AMG zone 51, when I reopen
the window its set to AGD66 so this setting is not holding.
<br>
</blockquote>
Weird. There's no permissions problems? <i><font color="#3333ff">Not
that I'm aware of. It gives me no complaints<br>
</font></i></blockquote>
<br>
<blockquote cite="mid:4C9706C4.3000604@arava.co.il" type="cite">
<blockquote type="cite">
<br>
When I reimport the the CSV file the default is still WGS84,
despite the global been set to AGD84 (or is it AGD66, I can't be
sure). Again I select AGD84.
<br>
<br>
Layer > Properties > Specify CRS comes up as AGD66.
Changed it to AGD84
<br>
<br>
When I export the layer, I'm again asked to specify the
projection, AGD84
<br>
<br>
Exported *.prj file still has a datum of "D_unknown". Upon
import of the shape file, my version of QGIS will now default
this to AGD84 however as the *.prj file is wrong it no good to
anyone else.
<br>
</blockquote>
Here's the prj that I'm getting:
<br>
<br>
PROJCS["UTM Zone 51, Southern Hemisphere",GEOGCS["Australian Natl
& S. Amer. 1969",DATUM["D_unknown",SPHEROID["aust_SA",6
378160,298.25]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["l
atitude_of_origin",0],PARAMETER["central_meridian",123],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000
],PARAMETER["false_northing",10000000],UNIT["Meter",1]]
<br>
<br>
What should it be? Even tho' it's called "D_unknown" all the
parameters seem to be there.
<br>
</blockquote>
<i><br>
<font color="#3333ff">PRJ file should be something like below</font>.
</i><br>
<br>
<font color="#3333ff">PROJCS["AGD84 / AMG zone
51",GEOGCS["AGD84",DATUM["D_Australian_1984",SPHEROID["Australian_National_Spheroid",6378160,298.25]],PRIMEM["Greenwich",0],<br>
UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",117],<br>
PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["Meter",1]]</font><br>
<blockquote cite="mid:4C9706C4.3000604@arava.co.il" type="cite">
<br>
<blockquote type="cite">
<br>
<br>
<br>
The only real work around I have so far is to delete the *.prj
file and then specify the projection on import.
<br>
<br>
<br>
<br>
<br>
On 19/09/2010 2:35 PM, Micha Silver wrote:
<br>
<blockquote type="cite">Micha Silver wrote:
<br>
<br>
<blockquote type="cite">Brett Adams wrote:
<br>
<br>
<blockquote type="cite">Micha,
<br>
I've attached csv data for importing and all shape files
exported. I've added comments into your prior email also.
<br>
<br>
</blockquote>
Hi Brett:
<br>
<br>
I do indeed see a problem exporting to the AGD84 CRS. I get
a "Latitude or Longitude exceeds limits" error. This happens
when the global CRS is set to WGS84 (which is the default in
QGIS). Attached is a screen shot of the error.
<br>
<br>
Here's how to overcome the problem: Change your Global CRS
to AGD84 zone 51 (BTW, that's EPSG code 20351). This is done
in the Settings->Options->CRS dialog window. Now
re-import the csv file and then save as shapefile and you
should be able to select the AGD84 CRS and have it saved
correctly.
<br>
Alternatively, if you don't want to change the global CRS
setting, you can select (in the same
Settings->Options-CRS window) to "Prompt for CRS". Then
when you import the csv you'll be asked to specify the
correct CRS for the points, You again select AGD84 and all
should be well.
<br>
<br>
Cheers,
<br>
Micha
<br>
<br>
</blockquote>
And just to complete the picture, Jurgen reminded me that in
recent versions there's a setting for each layer to set what
CRS it is. This is found in the Layer->properties window,
General tab. Click on the button "Specify CRS" and choose the
correct coordinate system. You can do this also for a
delimited text file layer. Then export to shapefile works as
you'd expect..
<br>
</blockquote>
<br>
<br>
</blockquote>
<br>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Brett Adams
Spinifex Geophysics
0438 861 974
<a class="moz-txt-link-freetext" href="SKYPE:brettadams_spinifex">SKYPE:brettadams_spinifex</a></pre>
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