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Last active June 9, 2022 10:13
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QGIS line fill based on polygon angle
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readme.md

image

Use the following expression for the rotation value:

90 - azimuth(
  point_n( $geometry, 1),
  point_n( $geometry, 2)
) / 3.1415927 * 180

This expression gets the angle of the line between the first two points of the polygon, then converts from clockwise radians to counterclockwise degrees that are used by the rotation option.

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