Problem creating x number of points along geometry in QGIS

Question

I'm relatively new to QGIS, I have past experience with ArcGIS.

I am trying to place 9 equally spaced points along a line, including one at each vertex. The points represent posts along a trellis wire in an orchard.

I have tried both the answers in this post... Creating specific amount of points along line in QGIS

1. First I used "Points along geometry"; changing the 'Distance' to $length/9

2. Next I used Geometry By Expression with the following code...

   with_variable ( 'no', 9, collect_geometries ( array_foreach ( generate_series (0,@no-1,1), line_interpolate_point( $geometry, length($geometry) / @no * @element ))))

My results are that 9 points are placed on each line, with a point on one vertex. However, I would like 9 points equally placed on each line with a point on both vertices.

• QGIS version 3.22.10-Białowieża.
• Windows 10.0.19044 Build 19044
• Project Coordinate Reference System: EPSG: 2927 "NAD83 (HARN) / Washington South (ftUS)
• Project Units: Feet
• Layer Coordinate Reference System: Same as the project.

Answer 1

Try this geometry by expression. It will place 9 points along the line length. For some reason I had to subtract 0.0001 or some lines didnt get the end point.

collect_geometries(
array_foreach(
generate_series(0, $length, $length/8-0.0001),
line_interpolate_point( $geometry, @element)))