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Post Closed as "Duplicate" by If you do not know- just GIS, PolyGeo

I'm using GIS to map the movement of animals and their speed and density in different habitat types using shape polygons.

When I got to the step ;Count points in polygon' a pop up window appeared saying:"CRS warning! Warning: Input layers have non-matching CRS. This may cause unexpected results.” I clicked ‘ok' however this meant that the attributes table that I then opened had no GPS speed values.

I'd like to know how to convert the CRS for this habitat shape polygon from 'Selected CRS (EPSG: 4326, WGS 84)' to 'Selected CRS (EPSG: 7405, OSGB 1936 / British National Grid)'.

If you could help I'd be immensely grateful, thank you!

I'm using GIS to map the movement of animals and their speed and density in different habitat types using shape polygons.

When I got to the step ;Count points in polygon' a pop up window appeared saying:"CRS warning! Warning: Input layers have non-matching CRS. This may cause unexpected results.” I clicked ‘ok' however this meant that the attributes table that I then opened had no GPS speed values.

I'd like to know how to convert the CRS for this habitat shape polygon from 'Selected CRS (EPSG: 4326, WGS 84)' to 'Selected CRS (EPSG: 7405, OSGB 1936 / British National Grid)'.

If you could help I'd be immensely grateful, thank you!

I'm using GIS to map the movement of animals and their speed and density in different habitat types using shape polygons.

When I got to the step ;Count points in polygon' a pop up window appeared saying:"CRS warning! Warning: Input layers have non-matching CRS. This may cause unexpected results.” I clicked ‘ok' however this meant that the attributes table that I then opened had no GPS speed values.

I'd like to know how to convert the CRS for this habitat shape polygon from 'Selected CRS (EPSG: 4326, WGS 84)' to 'Selected CRS (EPSG: 7405, OSGB 1936 / British National Grid)'.

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Lucy
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Changing CRS in QGIS due to pop up window: "CRS warning! Warning: Input layers have non-matching CRS. This may cause unexpected results.”

I'm using GIS to map the movement of animals and their speed and density in different habitat types using shape polygons.

When I got to the step ;Count points in polygon' a pop up window appeared saying:"CRS warning! Warning: Input layers have non-matching CRS. This may cause unexpected results.” I clicked ‘ok' however this meant that the attributes table that I then opened had no GPS speed values.

I'd like to know how to convert the CRS for this habitat shape polygon from 'Selected CRS (EPSG: 4326, WGS 84)' to 'Selected CRS (EPSG: 7405, OSGB 1936 / British National Grid)'.

If you could help I'd be immensely grateful, thank you!