QGIS » QGIS Application

I don't know if that matters but all polygons use NAD83 UTM 15N (ESPG:26915) and so was the project document. The setting for latter was forced back as OpenLayer plug-in switched it to something else (WGS 84?). Anyway it does appear correct in app itself.

Just added the same issue at the same time..
It used to be only possible to use OpenLayers with Pseudo Mercator projection, but
now apparently "project on the fly" option works everywhere in QGIS with OpenLayers but
not in printing.

I would disagree that this is plugin problem. The issue is wider -
essentially, it states that Map Composer fails to support "on the fly"
projection option, and means that other layers also might be affected.
In other words if I have two files in my project - one geoTIFF in UTM
and another shape file in Lat/Lon WGS84, and not sure they are printed
correctly.

I don't know plugin API well enough, and docs are sketchy to say if plugin
must have separate code to support printing. I would expect this should
be handled by QGIS.

The complete work around is the following:

1. Use QGIS OpenLayers or other tools to capture pierce of satellite imagery
you need for your project.

2. Use QGIS referencer to reference that image. Note that you can use canvas
coordinates for that. You get GeoTiff file in Pseudo Mercator

3. Re-project that Geotiff into projection you use for your project, such as UTM

4. Use in your project. It works fine, I did it few times in the past.

Best Regards,
Mikhail

Mikhail Tchernychev wrote:

1. Use QGIS OpenLayers or other tools to capture pierce of satellite imagery
you need for your project.

2. Use QGIS referencer to reference that image. Note that you can use canvas
coordinates for that. You get GeoTiff file in Pseudo Mercator

You don't have to georeference output from QGIS "Save as image". It has a world file, and only needs CRS information. EPSG:3857 in this case.

I'm seeing this behavior again now, with QGIS 2.4 and the Openlayers Plugin 1.3.3

I load a vector layer, then any of the Openlayers backgrounds, and set O-t-F. Everythng looks good on the canvas. I can also change projections and everything overlays as expected. I open Print Composer and make a map. Still layers overlay perfectly. I can display either in 3857 or a local projection and it looks fine.

Then I try to print or export to jpeg or pdf, and the background layer gets shifted. It seems that the shift is always to S.E. I tried to load the openlayers first and the vector after - same prob. I also exported the vector layer to CRS 3857, and loaded only that layer with an openlayers background. Still when printing or exporting to jpeg the shift appears.

I tested both on Win 7 64 and on Linux (Mint 17). Still same problem.

Thanks for any suggestions,
Micha

Micha Silver wrote:

I'm seeing this behavior again now, with QGIS 2.4 and the Openlayers Plugin 1.3.3

I load a vector layer, then any of the Openlayers backgrounds, and set O-t-F. Everythng looks good on the canvas. I can also change projections and everything overlays as expected. I open Print Composer and make a map. Still layers overlay perfectly. I can display either in 3857 or a local projection and it looks fine.

Then I try to print or export to jpeg or pdf, and the background layer gets shifted. It seems that the shift is always to S.E. I tried to load the openlayers first and the vector after - same prob. I also exported the vector layer to CRS 3857, and loaded only that layer with an openlayers background. Still when printing or exporting to jpeg the shift appears.

I tested both on Win 7 64 and on Linux (Mint 17). Still same problem.

Thanks for any suggestions,
Micha

you must use one of this scales

20 : 1128.497220
19 : 2256.994440
18 : 4513.988880
17 : 9027.977761
16 : 18055.955520
15 : 36111.911040
14 : 72223.822090
13 : 144447.644200
12 : 288895.288400
11 : 577790.576700
10 : 1155581.153000
9 : 2311162.307000
8 : 4622324.614000
7 : 9244649.227000
6 : 18489298.450000
5 : 36978596.910000
4 : 73957193.820000
3 : 147914387.600000
2 : 295828775.300000
1 : 591657550.500000

Thanks, not working for me :-(