Sebastian Krantz

icon indicating a website link sebastiankrantz.com icon indicating an email [email protected]

icon company Kiel Institute for the World Economy icon location Economist/data scientist/programmer interested in econometrics, time series, geospatial analysis, machine learning, and high-performance computing.

Results 113 comments of Sebastian Krantz

Review of dfms: Efficient Dynamic Factor Models for R?

Hi @adamhsparks. Thanks for these initial comments. Let me work a bit further on it still to ensure the package passes your checks as good as possible and we can...

Review of dfms: Efficient Dynamic Factor Models for R?

I have now brought *dfms* to a state where I am happy with it. The software is quite robust and inputs are rigorously checked. I still get some *autotest* issues,...

Review of dfms: Efficient Dynamic Factor Models for R?

Thanks @adamhsparks for the clarification. I will then open an issue requesting review, and also prepare a first CRAN release.

fsubset doesn't recalculate bbox for sf objects

Yes, `collapse` does not perform any 'spatial' operations, you need to use `st_make_valid()` or similar if this is important to your application.

fsubset doesn't recalculate bbox for sf objects

Just to be clear conceptually: the reason *collapse* is so fast is because I do almost everything at C-level without calling other functions or methods present at the R level....

Feature Request: Support `integer64` in `vgcd()`

Thanks, I will look into this next week, but at first sight this does not appear to be a code issue. integer64 is stored as double in R, the GCD...

Feature Request: Support `integer64` in `vgcd()`

I've tried to code something specific for integer64, but I haven't really been able to figgure out how the values of the object behave, or how they are represented in...

findex_by Add option interact.ids = "group" to use group() instead of finteraction().

Better: New argument `keep`, `drop` or similar to generate the index with integer levels.

TODO: option to install development versions from r-universe

Also could think of conflict management mechanism / user preferences.

Feature request: print feedback

*collapse* provides verbosity for critical operations such as joins (and, optionally, for pivots using the `check.dups` argument to `pivot`). It also prints informative statistics below grouped/indexed data frames. I don't...