Fix semilog plots for non numpy arrays

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

00:06:47

86.0%
passed #136726
docker
build_linux_36

00:06:46

86.0%
passed #136727
macosx
build_macosx_27

00:18:36

86.0%
passed #136728
macosx
build_macosx_36

00:17:54

86.0%