Bad Alloc again
System dynamics program with additional features for economics
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#607 Bad Alloc again
This is a cycling database, like the one we used:
https://www.kaggle.com/datasets/liamkolanowski/cyclistic-cleaned-data?resource=download
Maybe the data has invalid entries...
It also appears to be frozen on the Restting function, and clicking on Cancel didn't appear to work.
Second JPG. I wasn't able to save the file.
Diff:
I couldn't save the file.
It is a big file. I set to ignore all those fields you can't do much with, so ended up loading bike type, member type, season, day of week and average trip length, and using average to reduce over the dimensions.
Eg this is the display of average trip length as a function of season. Not sure why the barwidths are too wide - they never used to be.
You could also do average trip length by day of week (Wednesdays had highest trip length, which seems surprising, then Fridays).
Alternative analyses are possible, such as slicing by start or end station.
Pulling the data in took a long time, however, but it did succeed, with no bad_allocs. Probably can't do much about this until we do database backing - importing the data into the database will still take a long time, but only needs to be done once.
OTOH, if I include the start and end stations, it gets to construct equations, and cancel doesn't appear to work then. Mysterious. I'll check in a debugger, in case there's some infinite loop.
OK - this issue is a dup of https://sourceforge.net/p/minsky/ravel/564/. NodeJs does some really funky things with the heap - I do have some ideas about how to hack around this annoying restriction, but that is future work.