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#!/bin/sh
#
# tgrsort [file] -- sort TIGER line chains
#
# Sort keys are:
#
# 1. CFCC feature class, in this order:
# boundary
# water
# other topographic feature (rare)
# road
# railroad
# pipeline, power line, etc.
# landmark
# unclassified
#
# 2. Major category, largest (least significant) first
#
# The feature class and category sorting is chosen so that more important
# chains are drawn later, obscuring lesser chains, instead of the reverse.
#
# Note that this sorting can reverse the positions of the first two lines
# of the file (the min/max lines), but tgrmap.icn can handle that.
TR1=FHEABCDX
TR2=JKLMNPQR
cat $1 |
tr $TR1 $TR2 |
sort -t: -k 1.1,1.1 -k 1.2,1.3r -k 1.4 |
tr $TR2 $TR1
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