This tool can be used to find the maximum absolute (non-negative) value in each cell of a grid from a set of input images. It is found within the Overlay and Multi-Criteria Evaluation (MCE) toolbox.
NoData values in any of the input images will result in a NoData pixel in the output image. The output raster is of the float data type and continuous data scale.
The following is an example of a Python script using this tool:
            
                wd = pluginHost.getWorkingDirectory()
        
                # You may have multiple input files but they must
                # be separated by semicolons in the string.
                inputFiles = wd + "input1.dep" + ";" + wd + "input2.dep" + ";" + wd + "input3.dep"
                outputFile = wd + "output.dep"
                args = [inputFiles, outputFile]
                pluginHost.runPlugin("MaxAbsOverlay", args, False)
            
This is a Groovy script also using this tool:
            
                def wd = pluginHost.getWorkingDirectory()
        
                // You may have multiple input files but they must
                // be separated by semicolons in the string.
                def inputFiles = wd + "input1.dep" + ";" + wd + "input2.dep" + ";" + wd + "input3.dep"
                def outputFile = wd + "output.dep"
                String[] args = [inputFiles, outputFile]
                pluginHost.runPlugin("MaxAbsOverlay", args, false)