error in the example ?

[alexlib]

@ronshnapp

`(myptv) PS C:\Users\alex\repos\MyPTV\example> python workflow.py params_file.yml calibration

given inputs -
params file name: params_file.yml
action: calibration

camera files not detected in the working directory.
Generating a new empty file and leaving calib. sequence.
To continue calibration, fill in an initial guess in the
empty file, and then run again the calibration sequence.
Traceback (most recent call last):
File "C:\Users\alex\repos\MyPTV\example\workflow.py", line 575, in
wf = workflow(fname, action)
File "C:\Users\alex\repos\MyPTV\example\workflow.py", line 63, in init
self.calibration_sequence()
File "C:\Users\alex\repos\MyPTV\example\workflow.py", line 261, in calibration_sequence
cam.save('.')
UnboundLocalError: local variable 'cam' referenced before assignment`

[ronshnapp]

Sorry, my bug, this should now be fixed.

[alexlib]

I do not see the initial guess files, maybe that's what is missing? The error message changed, but the bug is still there. I couldn't follow the manual

`(myptv) PS C:\Users\alex\repos\MyPTV\example> python workflow.py .\params_file.yml calibration

given inputs -
params file name: .\params_file.yml
action: calibration

camera files not detected in the working directory.
Generating a new empty file and leaving calib. sequence.
To continue calibration, fill in an initial guess in the
empty file, and then run again the calibration sequence.
Traceback (most recent call last):
File "C:\Users\alex\repos\MyPTV\example\workflow.py", line 576, in
wf = workflow(fname, action)
File "C:\Users\alex\repos\MyPTV\example\workflow.py", line 63, in init
self.calibration_sequence()
File "C:\Users\alex\repos\MyPTV\example\workflow.py", line 262, in calibration_sequence
cam.save('.')
File "c:\users\alex\repos\myptv\myptv\imaging_mod.py", line 291, in save
f = open(full_path, 'w')
PermissionError: [Errno 13] Permission denied: '.\cam1'