Fix semilog plots for non numpy arrays

4 jobs for roc in 25 minutes and 23 seconds (queued for 5 seconds)
Status Name Job ID Coverage
  Build
passed build_linux_27 #136725
docker

00:06:47

86.0%
passed build_linux_36 #136726
docker

00:06:46

86.0%
passed build_macosx_27 #136727
macosx

00:18:36

86.0%
passed build_macosx_36 #136728
macosx

00:17:54

86.0%