Incorrect specification of WINDOW_SCALE in labeler.py for vcxsrv users?

[ftctechnh]

I am using a Windows 10 machine with Ubuntu 18.04 LTS installed as a Linux subsystem on my windows machine.

I am using VcXsrv as the X Windows server on my laptop so I can view XWindows applications that are run on my Ubuntu subsystem.

This works well, but I had a problem with the window being too small to use when I launched labeler.py. I noticed that in the labeler.py script, the window scale is specified as ".75". I compared this to the scale specified in find_bb.py (which runs properly on my VcXsrv server). In the script find_bb.py it specifies the scale as "0.5".

I modified the labeler.py script (see below) and it works well now. The window is large and visible. It appears that for scale values < 1, the value must include a leading "0" in the script:

WINDOW = "Tracking"

# On VcXsrv servers, it seems the scale has to be specified with a leading zero for a value less than 1.
# Otherwise, the displayed window is very small.
#WINDOW_SCALE = .75
WINDOW_SCALE = 0.75

CACHE_SIZE = 150 # 5 seconds worth of frames

I am not sure if this is a problem unique to VcXsrv, but when I ran labeler.py on a Windows machine (natively, using Python3 for windows) I did not encounter this problem.