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I receive this message: Digitizing Tools: Amend Line is disabled because layer CRS and project CRS do not match.

If I set the CRS of the layer the same as the project CRS (W84 Pseudo Mercator) is misaligned and in a unknown location.

My project is EPSG: 3857 / WGS 84 / Pseudo Mercator

First layer is a Bing Aerial (Web > OpenLayersPlugin > BingMaps > Bing Aerial) - CRS: EPSG 3857 / WGS 84 / Pseudo Mercator

Another layers with shapefiles lines and points captured from OSM. - CRS: ESPG 4326 / WGS84, which is OK on top the base layer.

About the error: the layer in question is a shapefile line layer (roads) - CRS: ESPG 4326 / WGS84, which is OK on top the base layer.

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3 Answers 3

Reset to default
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The Digitizing tool does not work correctly with on-the-fly reprojection.

If you need the project CRS to be EPSG:3857, reproject the shapefiles layers using Save As ... to another filename and EPSG:3857, and remove the original layers from the project. Then you can use the digitizing tool without error messages.

Once finished with digitzing, you can save back to EPSG:4326.

DON'T USE Set Layer CRS to reproject, it will corrupt your data.

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You should change you project CRS to match that of the layer you are editing, and not the Layer's CRS from it's properties menu, as that is simply incorrect.

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  • When I set the project CRS to macth (right button > Set Preject CRS from layer) the layer is slightly misaligned.
    – Carlos Pires
    May 7, 2016 at 15:48
  • what is your editing layer's CRS? what layers are you using as reference on your base map?
    – HDunn
    May 7, 2016 at 15:49
  • Pls see in the question above my project...
    – Carlos Pires
    May 8, 2016 at 14:02
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In a new project the tool works fine. It has no Bing layers.The CRS is the same for all layers and project.

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  • If you use the QuickmapServices plugin, you can still have Bing layers, and project CRS set to EPSG:4326.
    – AndreJ
    May 26, 2016 at 18:16
  • But by the experience I made it seems that we can not use Pseudo Mercator. It's the only difference I see, or perhaps what @HDunn mentioned above.
    – Carlos Pires
    May 27, 2016 at 11:33
  • With QMS, you can add Bing layers in layer CRS EPSG:3857 to your new project without the need to change the project CRS to it too.
    – AndreJ
    May 27, 2016 at 16:29

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