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I don't believe you can.</div>
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The underlying proj libraries (as used by QGIS) no longer support longitudes > 180 by default, so any re-projection from EPSG:4326 will only work with +-180 longitudes.</div>
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There isa command line parameter (+over) which can be used with proj on the command line but I don't think this is supported by QGIS.<br>
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If you use Postgis (or Spatialite), there is an ST_ShiftLongitude() function that will switch +-180 to 0-360 or the reverse which makes the operation pretty trivial for any sort of geometry.
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I have created a custom QGIS/Postgis projection (many years ago) which I assigned a code of 4327, this was essentially 4326 in a 0-360 degree space, so I could reproject between them, I'm not sure if this is still possible with the latest versions of proj with
wkt definitions. <br>
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<div class="PlainText">Brent Wood<br>
<br>
Principal Technician, Fisheries<br>
NIWA<br>
DDI: +64 (4) 3860529</div>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size: 11pt;" face="Calibri, sans-serif" color="#000000"><b>From:</b> Qgis-user <qgis-user-bounces@lists.osgeo.org> on behalf of Lester Anderson via Qgis-user <qgis-user@lists.osgeo.org><br>
<b>Sent:</b> Sunday, June 19, 2022 22:16<br>
<b>To:</b> qgis-user@lists.osgeo.org <qgis-user@lists.osgeo.org><br>
<b>Subject:</b> [Qgis-user] Polar stereographic (0 - 360 longitudes)</font>
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<div dir="ltr">Hi all,
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<div>I have data which is in 0-360 degree longitudes and I would like to apply a Polar stereographic projection. However, since the EPSG 3995 has limits of -180/+180 for longitude, as expected it gives half the plot.</div>
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<div>For some reason I cannot create a custom projection with an extent such as: </div>
<div>xmin=0, xmax=360, ymin=60, ymax=90 based on 3995 even removing reference to this ID.</div>
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<div>Any ideas how to proceed without having to shift it all to +/- 180</div>
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<div>Tested in 3.20 and 3.24</div>
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<div>Thanks</div>
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<div>Lester</div>
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<span>Brent Wood <br>
<font color="#1793d2">Principal Technician - GIS and Spatial Data Management</font><br>
<font color="#1793d2">Programme Leader - Environmental Information Delivery</font><br>
+64-4-386-0529<br>
<br>
National Institute of Water & Atmospheric Research Ltd (NIWA)<br>
301 Evans Bay Parade Hataitai Wellington New Zealand<br>
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