r.horizon: address incorrect number of rasters created #3411
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes #2582.
E.g. for start=0, end=12, step=5, three rasters are now generated (0, 5, 10) and not only 2 (because 12/5 = 2...) as was the case before.
Documentation is still valid, the interval is [start, end) as described there. Not sure if this should be backported, it is a bugfix, but it could break things (e.g. in QGIS, see the link in #2582).
This also speeds up the test significantly, there was no need to run r.horizon with full resolution if we are checking only the created raster names.