add a focused error message for bandnames with leading numbers #50
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Since terra allows the layers in a stack to begin with a number, it will be automatically converted to an raster stack via
newdata <- methods::as(newdata, "Raster") s. Due to the raster conventions this is done by adding a leading "X" to the layer name. Normally, however, model training and DI calculation have been carried out on the terra-stack without this leading "X".The pull request checks whether the layer names have a leading number as name and points this out in the error message.
Maybe this helps to avoid confusion about the message
"names of newdata don't match names of train data in the model"which is thrown by default.