Generating rectangle centered by point in QGIS

Question

I have a layer which contains points. The layer has "height" and "width" attributes.

I need rectangles around those points, but a point should be in the center of the related rectangle whose height and width value comes from the point attributes.

Is there any tool?

Example data for three points:

height   width
20       12
6        10
4        14

Taras · Accepted Answer · 2022-12-14T06:14:37.473

29

Check the "Rectangles, Ovals, Diamonds" geoalgorithm in the QGIS's Processing Toolbox (Ctrl+Alt+T)

edited Dec 14 '22 at 06:14

answered Sep 09 '20 at 12:57

Taras

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score 21 · Answer 2 · edited Dec 14 '22 at 06:16

There is "Geometry by Expression" tool. You should use in a Projected Coordinate System.

Select "Polygon" as "Output geometry type" option.
Click "Expression" button (highlighted blue square)

And paste the following expression

make_rectangle_3points(
  make_point($x + "height"/2, $y + "width"/2),
  make_point($x - "height"/2, $y + "width"/2),
  make_point($x - "height"/2, $y - "width"/2)
)

Result:

Generating rectangle centered by point in QGIS

2 Answers2

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