MapInfo Pro

A component that seems to have been lost when shifting from Vertical Mapper to the in-built raster engine is the ability to export histogram results. This is odd as the data is certainly present and you can copy sections of data (see image 1) but not the whole set.

To provide context, the histogram data is used to establish a relationship between elevation and volume which is then used to calculate things like draw-down rates of retarding basins and wetland systems (see image 2).

I'd very much like to see this function come back as it's one of the main reasons we purchased MI Pro Advanced!

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I am sure this would be easy to add. I have logged it as a feature request, scheduled for inclusion in the next refresh of the Beta.

Awesome, thanks Sam!

Just FYI, histogram distributions are usually represented as a series of equal size bins (spread over the data range from minimum to maximum) within which the number of samples is counted - providing the percentage of data within each bin and a cumulative percentage of data in all bins up to and including that bin.

But, when we compute statistics for raster we actually generate a different kind of histogram distribution where we have bins spread over the range but the bin width is not equal - it varies from bin to bin. The number of samples in each bin will be approximately equal.

We can output histogram distribution data in one, the other, or both formats.

Thanks for the response Sam.

The way I've applied the histogram data in the past run on the assumption that node values (elevation) were sampled for each cell within the DTM with the frequency recording a total cell count. This enabled me to calculate the elevation/volume relationship as the cell size was known.

That being said would it be possible to tie the bin size to the DTM's cell size so there is a 1-to-1 relationship?