I have 30 points, each one represents the SE corner of a 1.5 by 1.5m plot. I want to create polygons to represent these plots.

How do I create square polygons from a corner point and with a specific length?

  • What is the coordinate system of data? Commented Jan 25, 2022 at 18:11

2 Answers 2


There is "Vector geometry > Geometry by Expression" tool in Processing Toolbox. 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_point($x, $y), 
      make_point($x, $y + 1.5),
      make_point($x - 1.5, $y + 1.5)

enter image description here


enter image description here


Use geometry by expression to create a point at 315 degrees azimuth from your point with a distance of the hypotenuse of the square, then create a box around the two points:

bounds(collect_geometries( $geometry, project( $geometry, sqrt(2*1.5^2),  radians(315))))

enter image description here


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

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