Trouble using honeycomb lattice in cadnano2 using linux terminal

[nikitan24]

Hello ,
I have trouble using cadnano2 in ubuntu where it shows the following error when clicking onto honeycomb lattice option.Although firstly it was fine.The error occured today.

Traceback (most recent call last):
File "/home/nikita/virtualenvs/cn24x/lib/python3.10/site-packages/cadnano2/views/sliceview/slicerootitem.py", line 33, in partAddedSlot
partItem = PartItem(modelPart, parent=self)
File "/home/nikita/virtualenvs/cn24x/lib/python3.10/site-packages/cadnano2/views/sliceview/partitem.py", line 51, in init
self._setLattice([], modelPart.generatorFullLattice())
File "/home/nikita/virtualenvs/cn24x/lib/python3.10/site-packages/cadnano2/model/parts/part.py", line 696, in generatorFullLattice
return product(list(range(self._maxRow)), list(range(self._maxCol)))
TypeError: 'str' object cannot be interpreted as an integer
Aborted (core dumped)

[sdouglas]

This is peculiar. Did you happen to change the lattice size in the preferences? It’s complaining that the dimensions are stored as a string value but I am not sure why else it would change from the default int value.

[nikitan24]

Yes I happen to change some preferences in the lattice when following a tutorial but I after reset it to default preferences. The application version for linux mostly hangs when clicked on any icon after that setting I guess.Tried re-installing it but to no avail.

[sdouglas]

You might try deleting the QSettings preferences file that is generated by cadnano. The problem is that I don’t know where that’s stored in Linux, so you might have to track it down. Is this using the latest version of PyQt6, 6.5.2?

[nikitan24]

Ok sure will try tracking that. Yes, I am using the latest version of PyQt6, 6.5.2

[sdouglas]

The other thing if you’re comfortable modifying the source (see development instructions in the readme), is to explicitly cast those values as ints:

cadnano2/cadnano2/model/parts/honeycombpart.py

Line 36 in 17aa629

self._maxRow = kwargs.get('maxRow', app().prefs.honeycombRows)

becomes

self._maxRow = int(kwargs.get('maxRow', app().prefs.honeycombRows))

and likewise for self._maxCol.

[nikitan24]

Will surely try both of these options. Thank you very much.