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I am trying to overlay a timeseries shapefile over a geographic basemap, but the coordinate systems are not the same. I have set the project CRS to EPSG:4326, hence making the basemap in lat/long.

The area of interest, Myanmar, in CRS EPSG:4326

However, the shapefile when imported into the project has native CRS in easting/northing (UTM) it seems.

Myanmar timeseries, in easting/northing

I am unsure of how to transform between these two so that the timeseries shapefile is overlayed on the base map.

nmtoken
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QTPIE
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    QGIS knows how to relate different CRS to each other. This is know as on the fly reporjection. Have you tried adding the shape on top of the base map? If so, what happens? – Erik Sep 13 '21 at 10:39
  • Hi friend. The above images are the results of me adding the shp layer on top of the base map. – QTPIE Sep 13 '21 at 10:56
  • Did you change layer CRS? Be sure not to change (set) the layer CRS manually. What you can change manually is the project CRS (as you did). See here for details: https://gis.stackexchange.com/a/392388/88814 and https://gis.stackexchange.com/a/383437/88814 – Babel Sep 13 '21 at 10:57
  • @Babel, yes, I unfortunately still get (even after reprojection) my .shp in UTM. – QTPIE Sep 13 '21 at 11:01
  • Open a new QGIS project, load a basemap. Then load your shapefile without changing anything. If its not in the correct place, there is an error in the file. Can you share it? – Babel Sep 13 '21 at 11:54
  • Sure thing, thank you for your help. These files should enable you to view the timeseries points: https://drive.google.com/drive/folders/1i4KinwQ7TOdrPacVUlAZfOLJpSArJXIn?usp=sharing @Babel. – QTPIE Sep 13 '21 at 13:21
  • Your layer in in PESG:4326 - I guess you or someone else did what I mentioned above (changed layer CRS) and saved it as such. So you must find out the initial CRS: do you still have the initial (unchanged) file at hand? Or do you know the area of the world the points should be located (e.g. which UTM zone - if an UTM-based CRS was used)? – Babel Sep 13 '21 at 13:31
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    If you change (this time, indeed!) the CRS of your layer to e.g. EPSG:32247, your points will be placed in northern Myanmar - see: https://i.stack.imgur.com/6HW0A.png – Babel Sep 13 '21 at 13:36
  • @Babel you are a legend...thank you!! – QTPIE Sep 13 '21 at 23:23
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    This is a variant of the most-asked question on this site, the QGIS canonical duiplicate of which is Layer disappears when changing from CRS in degrees to CRS in meters in QGIS – Vince Sep 14 '21 at 00:54

1 Answers1

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Solved by @Babel.

"If you change (this time, indeed!) the CRS of your layer to e.g. EPSG:32247, your points will be placed in northern Myanmar - see: i.stack.imgur.com/6HW0A.png"

QTPIE
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  • Be aware to really find the correct CRS: aprart from EPSG:32247, there are other (similar) CRS for that region - so make sure to find the correct one. – Babel Sep 14 '21 at 07:17
  • Hi Babel,

    How do you find the other CRS for a region? I am now looking within Kyrgyzstan. Thanks!

     – QTPIE Oct 12 '21 at 23:58