Thanks for the advice. Creating the buffers in a projected coordinate system and the reprojecting to 4326 was the answer I was looking for.
Bernie. On Tue., Mar. 22, 2022, 7:51 a.m. Andrea Giudiceandrea via Qgis-user, < [email protected]> wrote: > *Bernie Connors* bernie.connors at unb.ca > <qgis-user%40lists.osgeo.org?Subject=Re%3A%20%5BQgis-user%5D%20How%20to%20specify%20buffer%20distance%20in%20Metres%20when%20Using%0A%20WGS84%20%28EPSG%3A4326%29%20geometry.&In-Reply-To=%3CCAHRK%3DgCgcpb1FCcG3%3DACKJW%3DFWPaKTojurfxqUpdnRtQYbgrDQ%40mail.gmail.com%3E> > *Mon Mar 21 12:44:58 PDT 2022* > ------------------------------ > > I am using QGIS 3.20.0-Odense and I have a small set of points in > EPSG 4326, a geographic projection. I am trying to use the Multi Ring > Buffer tool and the units for the buffer distance is in "degrees" but I > want to specify a buffer of 5 metres. > > > Hi Bernie, > if you are using the "Multi-ring buffer (constant distance)" QGIS > processing algorithm, then AFAIK the unit for the "distance" parameter > depends on the unit of the CRS of the input layer and not of the CRS set > for the project. > > So, in order to specify the distance in metres, you need to reproject the > layer in a projected coordinate system whose unit is metres and use such > projected layer as the input of the algorithm. Pay attention to to > reproject your layer to a projected CRS (usually an UTM one) that is > adequate for your study area in order to minimize the projection distortion. > > Regards. > > Andrea > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >
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