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.
2013/10/23 Brent Wood <[email protected]> > > Hi, > > I have a problem with this very useful plugin. > > 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. > > 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. > > 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. > > 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. > > > 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. > > > inTHANKSvance > > > Brent Wood > > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > -- *Sarah Gregg* immagini - parole - territorio - natura Web: www.wild-eyes.eu
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