Markus Metz

Results 71 comments of Markus Metz

See new PR #1786 Note that the workaround to set a link of location/mapset/.tmp/ to another (fast) drive can cause fatal errors because files can not be renamed across mount...

This feature request sounds reasonable, please provide a PR. Regarding the value -9999 in gdaldem aspect, it seems that gdaldem is mixing up nodata cells (no input elevation available) and...

Reading through this conversation, I agree with Moritz that ```$ sudo apt install grass $ python3 >>> import grass ``` does not make sense. Users must establish a GRASS session...

According to @mlennert, the changes required to implement formulas 2 + 4 are not too invasive. Therefore I would opt to add them to `r.walk` and not to create a...

In this PR you are using the python interface to SQLite3 and PG. Have you tested the alternative using db.execute? The reason I am asking is that the GRASS db...

The different PRs would add the same files, e.g. CMakeLists.txt in this PR and in #355, #354 and others. Please avoid the addition of the same files or identical changes...

CentOS 7 is out with this PR because it gets proj-4.8.0 from EPEL which is too old... The big question is, if we accept the fact that this PR does...

Testing the example of [mlennert](https://github.com/OSGeo/grass/pull/1283#issuecomment-777566879), one reason for different results with R geosphere is that a and f where not given, however, using the same a and f as in...

For my tests with R geosphere, the precision of a and f was too low. Using more precise values `a = 6378137, f = 0.00335281066474746`, the results of R geosphere...

There is also the [Planimeter](https://geographiclib.sourceforge.io/html/Planimeter.1.html) tool of GeographicLib. Thus there are three different implementations of the algorithm of Charles Karney: Planimeter, geodesic.[c|h] in PROJ and R geosphere. Unfortunately with four...