<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt"><div><span>Hi Nyall,<br></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><span>I should have mentioned I'm using v2.2, which is why I figure the option you suggest I turn off is not available on my version??</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style:
normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><span>The only "layer rendering options" I can find are transparency & blending under the style menu.</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><span>I also assume that it is off anyway in 2.2, if it is not in the menu?</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida
Grande,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><span>Thanks</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; background-color: transparent; font-style: normal;"><span>
Brent</span></div><div><br></div> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 10pt;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> Nyall Dawson <nyall.dawson@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> Brent Wood <pcreso@pcreso.com> <br><b><span style="font-weight: bold;">Cc:</span></b> qgis-user <qgis-user@lists.osgeo.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, August 8, 2014 1:57 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [Qgis-user] QGIS reprojection broken?<br> </font> </div> <div class="y_msg_container"><br><div id="yiv1277503921"><div><div dir="ltr">Hi Brent,</div>
<div dir="ltr">Try switching off simplification in the "layer properties" - "rendering" tab. Does that help?</div>
<div dir="ltr">Nyall<br clear="none"></div>
<div class="qtdSeparateBR"><br><br></div><div class="yiv1277503921yqt9062934036" id="yiv1277503921yqtfd73902"><div dir="ltr">On 08/08/2014 11:42 am, "Brent Wood" <<a rel="nofollow" shape="rect" ymailto="mailto:pcreso@pcreso.com" target="_blank" href="mailto:pcreso@pcreso.com">pcreso@pcreso.com</a>> wrote:<br clear="none">
><br clear="none">
> Hi,<br clear="none">
><br clear="none">
> Apologies for an attachment to a list email, but I kept it small...<br clear="none">
><br clear="none">
> The attached image shows some Antarctic data (grounding line & ice shelf extent) with a polygon overlayed. <br clear="none">
> I created the polygon by editing a text (csv) file with lat/longs:<br clear="none">
> x,y<br clear="none">
> 150,-60<br clear="none">
> 150,-85<br clear="none">
> 255,-85<br clear="none">
> 255,-60<br clear="none">
><br clear="none">
> I opened it in QGIS (CRS=EPSG:4326) & created a new polygon shapefile layer (snapping to the points) to create a box defined by the same points.<br clear="none">
><br clear="none">
> Then I opened the Antacrctic layers (WFS from NSIDC <a rel="nofollow" shape="rect" target="_blank" href="http://nsidc.org/cgi-bin/atlas_south">http://nsidc.org/cgi-bin/atlas_south</a> in EPSG:3031 - Antarctic Polar Stereographic)<br clear="none">
> <br clear="none">
> I set the QGIS project CRS to a user defined one, same as EPSG:3031, but with +lon_0=180 instead of 0 which gives a 180 up map instead of 0 up.<br clear="none">
><br clear="none">
> The map is displayed as in the attached image - a strange box is drawn to the north of the box polygon, the eastern points & vertices do not appear - and if the layer is editable, they cannot be clicked on as nodes. <br clear="none">
><br clear="none">
> If I swap the CRS to EPSG:3031, the inverted map renders the box better (no extra box outside it) but the points are still rendered in a different location to the polygon vertices - but they share the same coordinates.<br clear="none">
><br clear="none">
> I can usually work around 180 issues in QGIS by using longitudes in the 0-360 space, but it seems to me that there are some issues with QGIS working in a polar projection across 180.<br clear="none">
><br clear="none">
> Does anyone know if there is a way to solve this, or is this an inherent problem for now? In the short term I need to decide whether or not I can progress with QGIS in the cross 180 polar space, or will need to find another tool.<br clear="none">
><br clear="none">
> In the longer term, if this is an issue, I'd like to work with a developer to resolve it - and may be able to fund (some of?) the work required.<br clear="none">
><br clear="none">
><br clear="none">
> Thanks,<br clear="none">
><br clear="none">
> Brent Wood<br clear="none">
><br clear="none">
><br clear="none">
> _______________________________________________<br clear="none">
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