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sortshp - Online in the Cloud

Run sortshp in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command sortshp that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


sortshp - sort a Shape data set

SYNOPSIS


sortshp [ infile outfile item [ascending | descending] | -v]

DESCRIPTION


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.

OPTIONS


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.

EXAMPLE


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 sortshphttp://mapserver.org/_images/sortshp-before.png

Figure 2: Attributes After sortshphttp://mapserver.org/_images/sortshp-after.png

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