Provided by: mapserver-bin_7.2.2-1_amd64
sortshp - sort a Shape data set
sortshp [ infile outfile item [ascending | descending] | -v]
sortshp sorts a Shape data set based on a single column in ascending or descending order. Supports INTEGER, DOUBLE and STRING column types. Useful for prioritizing shapes for rendering and/or labeling. The idea here is that if you know that you need to display a certain attribute classed by a certain value, it will be faster for MapServer to access that value if it is at the beginning of the attribute file.
infile The name of the .shp file outfile The name of the .shp/.shx and .dbf files to create item Name of the field to sort on ascending, descending Sort order (default: ascending) -v Display mapserver version and build options.
This example uses a roads file ('roads_ugl') that has a field with road classes in integer format ('class1'). sortshp roads_ugl roads-sort class1 ascending Result: A new Shape data set named 'roads-sort.shp' is created with shapes sorted in ascending order, according to the values in the 'class1' field. Figure 1: Attributes Before sortshp ⟨http://mapserver.org/_images/sortshp-before.png⟩ Figure 2: Attributes After sortshp ⟨http://mapserver.org/_images/sortshp-after.png⟩
shp2img(1), shptree(1), shptreetst(1), shptreevis(1) 20 February 2019 sortshp(1)