An on-line tool to "flatten" shapefiles. Some people have digitized
glaciers in such a way that internal rock outcrops (nunataks) have been
represented by "holes" in the glacier polygon. In the shapefile itself,
these "holes" are sub-parts to the main glacier polygon, and share
attributes with it. The GLIMS
, however, requires that internal rock outcrops be
represented by their own top-level polygons, so that they can be
individually attributed. This tool converts shapefiles with glacier
polygons containing holes into shapefiles where the holes have been
made into top-level polygons. These new polygons inherit all the
attributes of their parents, except that the "category" attribute is set
to "intrnl_rock". For best results, the input shapefile(s) should already
have the attribute "ID" populated with GLIMS glacier IDs, and the
attribute "category" populated with "glac_bound".
Upload a tar or zip archive of one or more 'segments' shapefiles. The
archive may contain subdirectories.