2

Is there a way of creating a buffer (elliptical I guess) in QGIS that has independent distances to the North, South, East & West (from the attribute table) so the buffer could be 5m wide to the North, 4m to the East, 6m to the South & 2m to the West? This is to show tree crown dimensions on a map.

1
  • 1
    Try Rectangles, ovals, diamonds processing tool. At least possible to specify width and height – BERA Oct 9 '20 at 18:02
2

You can consider to use the geometry generator to do this job for you. The geometry generator will only generate the geometry of your symbol. The example below has a point theme with 4 attributes: "n", "s", "e" and "w" for your values and makes a polygon symbol with this four values with the expression:

smooth(
make_rectangle_3points(
make_point($x-"w",$y-"s"),
make_point($x-"w",$y+"n"),
make_point($x+"e",$y+"n")),
3)

it takes the pointgeometries ($x and $y) and generates a rectangle with the values from "n", "s", "e" and "w", which will be smoothed afterwards:

enter image description here

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.