Hi monks

This one is a bit problematic. I need to read a file into a data structure that enables quick sorting, searching etc. The data look like this:

AAAAAAA
p 1 6
1105720 2453315
1106720 2453315
1106720 2453950
1106715 2453950
1106715 2454525
1105720 2454525
p 2 6
1105720 2456125
1106720 2456125
1106720 2456760
1106715 2456760
1106715 2457335
1105720 2457335
p 3 6
1105720 2458940
1106720 2458940
1106720 2459575
1106715 2459575
1106715 2460150
1105720 2460150
BBBBBBB
p 1 6
1105720 2461750
1106720 2461750
1106720 2462385
1106715 2462385
1106715 2462960
1105720 2462960
p 2 6
1112965 2466125
1113330 2466125
1113330 2466120
1114175 2466120
1114175 2467120
1112965 2467120
p 3 6
1118210 2453315
1119210 2453315
1119210 2454525
1118215 2454525
1118215 2454170
1118210 2454170

[download]
where AAA and BBB are first level keys, and the next are vertexes (x,y) of a polygon

At the end I need to compare the polygons from 2 files.
I thought to use hash to input the first level keys and then every set of polygons will be saved in a B tree structure.
Does any one of you knows a better way of doing that? If so, is there any fit module at the CPAN?

Edited by BazB fixed code tag, tidy/fixed formatting..and added readmore.

In reply to cpan Data structure by michaelg

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