lineqgissplitting
I've seen a lot of questions involving splitting a line with the help of a point layer.
I want to split a line into fractions of its length.
For example, I have a line 400 meters long, I want to split it into four lines of 100 meters long each.
There is the grass module v.split, but I get an error message when I start it from the qgis toolbox :
*"TypeError: object of type 'NoneType' has no len()"*
So I'm not sure if I get it to work if this would be a solution.
The current version of QGIS (QGIS 3.0+) has the option to Force segments to be exactly of a given length, except for the last one using v.split. v.split is accessed from the Processing Toolbox under GRASS --> Vector
[QGIS 2.8] Use the Intersect tool menu : "Vector / Geoprocessing tools / Intersect" (from Miro's answer in comments)
[QGIS 2.18] Use the Intersection Tool in the processing toolbox/panel :
This algorithm extracts the overlapping portions of features in the Input and Intersect layers. Features in the Intersection layer are assigned the attributes of the overlapping features from both the Input and Intersect layers. Attributes are not modified.
Best Answer
The v.split.length function from GRASS should do exactly what you want by splitting the line into equal segments defined by the user without the need for a point layer. Here's a simple example of a straight line (it also works on non-straight and multiple lines):
I added a column to calculate its length using
$lengthin the expression:Using the v.split.length function from GRASS via the Processing Toolbox, I chose to split the line into 25m segments which should make a total of 4 parts:
I then updated the Length column of the output layer and used the same command as above to re-calculate the length:
Not sure why you are receiving the error, could you share your line layer for people to test?