If you need a distribution map from a book, how do people deal with that? Do u email authors to obtain the layers or is there a way to export the polygons from the book images?
Colleagues and I need the polygons of the whole distribution of two #snake vipers: Porthidium nasutum and lansbergii. This goes from Mexico, thru Central America, to Venezuela/Colombia/Ecuador, so it isn't as simple as creating the polygons by "hand".
Chen Xiao Fish
Of couse, asking for the author is the most effective method. If not available, there is an another way to deal with it. Save the species distribution map as a pic, then use georeferencing or spatial adjustment tool in arcgis to convert the pic to feature, i.e., polygon you want.
Hope it helps.
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