cumulative field with arcgis 10?

Question

Hi. I have a field with percentage values. They sum up to 100%.

I want to make a new field which keeps a cumulative track on the percentages down the row (from low to high).

I've found a vba calculation by easycalc (have it on another computer) but I can't seem to get it to work with arcgis 10?

Anyone has something to put in the field calculator for this task?

ToreBorvik · Answer

Thanks! I'll check it out on monday

KevinHibma · Answer

Hopefully this gets you started:

Expression: calc ( !percentage! )

Code Block:cumulative = 0
def calc(invalue):
    global cumulative
    cumulative = invalue + cumulative
    return cumulative

cumulative.png