Ege Rubak

This is a bit of a though one. As I see it the multiplier only exists because of historic datasets that have been rescaled to the unit square. In practical...

@edzer yes marked point patterns are definitely used as members `ppplist` in some applications. The mark variables would typically be the same across patterns, but are not forced to be....

@jianshu93 this could be related to the permission problem in #14. A workaround that seems to work for some people is [in this comment](https://github.com/baddstats/polyclip/issues/14#issuecomment-552402093).

You don't necessarily need sudo access. The workaround I mentioned is: ``` wget https://cran.r-project.org/src/contrib/polyclip_1.10-4.tar.gz tar -zxvf polyclip_1.10-4.tar.gz Rscript -e "library('devtools'); devtools::install('polyclip')" ```

I think this is basically the same issue as #14 and #18. It is very annoying, but an updated version of [this comment](https://github.com/baddstats/polyclip/issues/14#issuecomment-552402093) seems to be a workaround on systems...

@gowachin Just out of curiosity can you install other packages that compile C++ code from source without problems? E.g. install.packages("nloptr", type = "source")

This is quite strange. And you say it also works without any problems when you use `devtools::install()`? I really don't see any good reason why this should work while `install.packages()`...

It would be great if someone was able to provide a reproducible example in a docker container, so we could investigate further.

Thanks @ismailsunni. Is it also reproducible with GNU-R? I expect it is easier to get help from the mailing lists that way.

Thanks a lot for that explanation @mpadge :+1: We will try to fix the compiler (and CXX11) issue. I'm not sure if this covers all the problems seen by others...