Although a very common format for storing spatial vector information (polygons, lines, points), shapefiles can contain geometry errors or other misinformation that prevents them from functioning properly. If you are using a zipped shapefile and are not returned results, please consider the following:
The shapefile must be saved as a .zip file and contain the .shp, .shx, and .prj files of the shapefile. Only include one shapefile per .zip file.
Shapefiles may not work with Internet Explorer web browser. Please use Chrome.
3D shapefiles are not supported, please convert to 2D.
Shapefiles can contain geometry errors. Please check and fix the geometries of the shapefile and try again.
Shapefiles with complex geometries (i.e., polygons with many vertices) or many features will result in an error. Please reduce the number of features or simplify them. You may also analyze one feature at a time: after loading the shapefile, click on the feature to be analyzed; a popup will apear above the feature with the ability calculate time series for that feature only.
Although multipart polygons are compatible with the RAP, singlepart polygons are recommended. Convert to singlepart polygons.
Only the first 50 features of the shapefile will be analyzed; the remaining features will be discarded.
If after attempting the above suggestions the shapefile continues to result in an error, please email the zipped shapefile to email@example.com. We will attempt to provide a solution within a reasonable timeframe.