--- a/SVGImport.wiki	Tue Jan 14 21:54:39 2014 +0000
+++ b/SVGImport.wiki	Tue Jan 14 22:42:39 2014 +0000
@@ -37,8 +37,10 @@
 The coordinates should now be rounded for use by the crude script in (10) unless you plan to handle that yourself in some way.  Here is a vim one-liner to do it.
 {{{:s/[0-9][0-9.]*/\=float2nr(floor(submatch(0)*1))/g}}}
 
-Also, it is probably a good idea to remove duplicate points.  Here's a regex for that. {{{s/\(L\d\+ \d\+ \)\1/\1/g}}}  - you should run that a couple of times, then {{{s/M\(\d\+ \d\+ \)L\1/M\1/g}}}.  That just cuts down on a bit of redundancy.
-
+Also, it is probably a good idea to remove duplicate points.  Here's a regex for that. {{{s/\(L\d\+ \d\+ \)\1/\1/g}}}  - you should run that a couple of times, then {{{s/M\(\d\+ \d\+ \)L\1/M\1/g}}}.  That just cuts down on a bit of redundancy.  If these regexes match anything, you probably should rerun them.
+Since this page is a mass of hacks, here's one more redundancy reducer, in bash this time.
+{{{rm dupes.txt;PREVXY=(99999 99999);sed 's/\([LM]\)/\n\1/g' inputfile | while read f;do read -a XY <<< "${f:1}";if [ "${f:0:1}" != "M" ];then if((${XY[0]}-${PREVXY[0]}<3&&${XY[0]}-${PREVXY[0]}>-3&&${XY[1]}-${PREVXY[1]}<3&&${XY[1]}-${PREVXY[1]}>-3));then echo "$f" >> dupes.txt;else echo $f;fi;else echo $f;fi;PREVXY[0]=${XY[0]};PREVXY[1]=${XY[1]};done | xargs > inputfile.dedupe}}}
+If dupes.txt has anything in it, you probably should run it again.  Anyway, running these reduced a complex test trace from ~8800 points down to ~6500.
 
 9) Convert the path data.  Here is a crude script to do that.  Note this one uses a line size of 1 (that's the 0x01 business).
 If you want larger lines you can pick anything between 0x00 and 0x3F.  That's 6-636.  See the [DrawnMapFormat] wiki page.