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When I try to draw a 2.5 mile buffer around a point in QGIS, the entire screen is filled with the buffer. I have changed the projection of the shapefile and the project, as you can see from the screenshots. This is using QGIS 3.8.0 Properties screenshot CRS settings

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    how did you change the projection of the shapefile exactly?
    – geozelot
    Commented Jul 11, 2019 at 20:09
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    You didn't actually change your data, just the metadata so you are now lying to QGIS and it is confused.
    – Ian Turton
    Commented Jul 12, 2019 at 8:48
  • Marking this as a duplicate issue is not helpful Ian. I searched all around for a solution, and saw people being giving the same answer about changing the projection repeatedly. This obviously is not that simple in my case. To set the projection, I chose one when importing the data via CSV. Once the data was imported, I saved the feature as a new shapefile, again selecting that projection. I also set the default projection of any new files to that projection.
    – Andrew McK
    Commented Jul 15, 2019 at 13:05
  • to get you on the right track: the issue you are facing is due to you assigning a (wrong) CRS instead of reprojecting into the correct CRS; the data itself is likely referenced in a geographic coordinate system, and on import you will have to select that CRS (I assume EPSG:4326, you will need to check with the data provider). then you need to reproject that layer (in this case save as shapefile with the desired projection, QGIS will then automatically reproject into the target CRS).
    – geozelot
    Commented Jul 15, 2019 at 15:08

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When you're drawing the buffer are you definitely using the correct measurement (See below)? The screen might be filled at first but have you tried to right-click on the layer and then zoom to Extent'. This will zoom with your buffer centred.

enter image description here

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