I am trying to build a graph to test an equation i have found for calculating LAI against the Biophysical processor.
In the first screenshot the editor accepts the formula (which is actually 0.57exp(2.33NDVI), but the editor won’t allow me to enter the ‘E’ constant)
But when I try and add the link to ‘BandMerge’, throws the error seen in the second screenshot.
please can someone explain why this happens?
I have also added the .xml file for the graph (i think it has saved it properly, but it doesn’t usually!)
myGraph_gndvi_gci_EVI_EVI2_write_imageafter_subset.xml (5.8 KB)
Oh, and just for fun, when i go back into the expression editor, it has lost the ndvi source!: