I am using a Perspective Table and I would like to sum up the values in one of the column and show them in a LED display. Is it possible if I can do that in Ignition?
I’m sure there’s probably a more pythonic way to manage this, but this is what I did:
the transform attached to this binding makes a list out of the populations of the default data, then uses a Python built-in
sum() function to obtain their sum.
The only golfing I’d do with Cody’s suggestion is add that the square brackets for the list comprehension aren’t required; since
sum is already a terminal operation and only requires visiting each element once, you don’t need to collect the results into a list at all (and thus you can save some memory):
sum(row.population for row in value)
I couldnt see the screenshot , could you please reattach the screenshot again please!
props.data is a dataset, instead of a list of values. You’ll need to iterate through the rows of your Dataset, or get just the column you’re trying to sum.
sum(value.getColumnAsList(x)) # where x is the index of the column you're trying to sum
As long as the column is in fact numeric, that should work.
EDIT: Good catch Cody
I tried the sum(value.getColumnAsList(“columnName”)) but still getting the Error_ScriptEval. I have attached a screenshot along with this message. Thanks again for your help!
Thanks Cody, that worked