Date Posted:
Product: TIBCO Spotfire®
Product: TIBCO Spotfire®
Problem:
Building Histogram for lognormal data
Solution:
How to build a histogram for lognormal data?
To create a histogram, bin the category axis of a Bar Chart whose value axis is (Row Count). The following is an example of a custom expression that will do this when the category axis is defined using a numeric column.
AutoBinNumeric([Mileage],12)
To log-transform the category axis of the histogram, right-click on its category axis, then select "Log Scale" from the context-sensitive menu.