# Returning names of rasters with maximum value

Question asked by jproville on Jul 30, 2013
Latest reply on Aug 6, 2013 by jproville
Hi,

I have a pile of 23 different rasters, on which I'm performing various calculations. One of them is a simple Maximization, using Cell Statistics, and one thing I'd like to see is a raster showing me which of the 23 layers contained the maximum value that was chosen. I'm finding this is pretty hard to do.

In Arc 9.3, I solved this problem using a long string of Con() and Max() statements in the raster calculator, to assign an integer index value to each raster that was selected in the maximization. This is no longer possible in Arc 10 since Max() has been removed. I tried an approach in Python using the code below, but it does not really work. What I'm looking for is a way to return a raster with either index values from 1-23, or ideally the names of each input raster. Each name would be assigned to the cell if it was chosen as a maximum value.

Hopefully this makes sense, I can elaborate if not. Any ideas here would be hugely helpful. Here's some sample code I've been playing with, but there has to be a simpler, more elegant solution - perhaps an obvious tool I'm missing?

Thanks!

opt2 = Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "blank",-9999, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "CottonLB" ,1, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "FodderLB" ,2, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "FruitsLB" ,3, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "GroundnutLB" ,4, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "JatrophaLB" ,5, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "MaizeLB" ,6, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "MilletLB" ,7, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "MiscanthusLB" ,8, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "NarcostimulantsLB" ,9, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "OilpalmLB" ,10, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "PulsesLB" ,11, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "RapeseedLB" ,12, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "RiceLB" ,13, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "RootsLB" ,14, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "SorghumLB" ,15, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "SoybeanLB" ,16, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "SugarbeetLB" ,17, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "SugarcaneLB" ,18, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "SunflowerLB" ,19, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "SwitchgrassLB" ,20, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "TubersLB" ,21, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "VegetablesLB" ,22, Con(CellStatistics(["CottonLB","FodderLB","FruitsLB","GroundnutLB","JatrophaLB","MaizeLB","MilletLB","MiscanthusLB","NarcostimulantsLB","OilpalmLB","PulsesLB","RapeseedLB","RiceLB","RootsLB","SorghumLB","SoybeanLB","SugarbeetLB","SugarcaneLB","SunflowerLB","SwitchgrassLB","TubersLB","VegetablesLB","WheatLB","blank"],"MAXIMUM","DATA") == "WheatLB" ,23,-9999))))))))))))))))))))))))