<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;color:#000066">I have the same problem in Italy. A shape file of points in WGS84 displays perfectly on other bases, but if I use an OpenLayers map such as Google as the base, the points disappear, Sarah. </div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/10/23 Brent Wood <span dir="ltr"><<a href="mailto:pcreso@pcreso.com" target="_blank">pcreso@pcreso.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:12pt;font-family:times new roman,new york,times,serif"><div><br></div><div>Hi,</div><div><br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
I have a problem with this very useful plugin.</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif"><br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
If I load a Postgis dataset which includes points across 180, for data captured around New Zealand, using longitudes in the 0-360 space (which is valid data for EPSG:4326) they plot fine in QGIS.</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
<br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">If I then start the plugin & use a Google/Yahoo/etc basemap, the points are (usually) initially in the correct place and plot OK. Sometimes the points in the W hemisphere fail to render, sometimes they are OK. This is on a zoomed out map.</div>
<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif"><br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
As I zoom in, QGIS starts to omit the points in the W hemisphere altogether, even in the configurations that were OK when zoomed out. QGIS also sometimes starts
to offset the points from the basemap, so that the western points on the map plot at an increasingly offset position, and the eastern points are missing. As I zoom back out, this offset is retained and the map fails to overlay the points correctly.</div>
<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif"><br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
I'm assuming this is related to the plugin switching the canvas to EPSG:3857 and failing to support the 0-360 longitude coordinates. Given Proj.4 is used as the reprojection engine, there should be no problems with the 0-360 coords being correctly mapped to EPSG:3857, as in my experience Proj.4 (cs2cs) has supported 0-360 input seamlessly for some years now.</div>
<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif"><br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
<br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">Is there any simple fix I can apply? If some funding is required to make the plugin work correctly across 180 with 0-360 longitude data, this is possible. <br>
</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif"><br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
<br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">inTHANKSvance</div><span class="HOEnZb"><font color="#888888"><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
<br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif"><br></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:times new roman,new york,times,serif">
Brent Wood<br></div><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><br> </div> </div>
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