I would like to know how we can do a cumulative profitability curve on Knime with the cumulative net income on the y axe and on the x axe, the number of customers. I could compute the cumulative net income through a java snippet simple.
How can i do this cumulative profitability curve ?
I had a similar problem with dates though.
y-axis = cumulative income
x-axis = dates
After sorting the rows with ascending time, I used a Java Snippet node with code:
double sum=0.0; // in the global variable space
sum = sum + $value KW$;
Also, there is now a template in in Interactive R-Snippet node for doing cummulative arithmetic.