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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Mike</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The easiest solution is probably to get
your programming friend to use Shapelib code to write a decimator – it is
very easy for line features.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b>
shapelib-bounces@lists.maptools.org [mailto:shapelib-bounces@lists.maptools.org]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Mike.Sexton@ga.gov.au<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, 13 November 2006
1:07 PM<br>
<b><span style='font-weight:bold'>To:</span></b> shapelib@lists.maptools.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Shapelib] Shapefile
decimation</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>Hi,</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>I have another query.</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>Last time I asked about
making shapefiles from ASCII X,Y files. I followed up on the suggestion of
modifying shpadd.c to read from an input file and a friend modified the code
and in virtually no time produced a very good result</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>In fact too good.</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>The files are very large.
I would like to decimate the shapefiles. I have scanned the web looking for a
program that might achieve this. I found the program fshape and to my utter
amazement got it too work. I need to play with the parameters a bit (my first
attempt was a bit severe). But since the various shapes in the shapefiles are
ships tracks, it would probably be just as valid to accept only every 10<sup>th</sup>
point (or even less). I could go back to the original datafiles and decimate
them (although they were in a myriad of formats and I kept altering my script
to pull out the bits I need). This is not an attractive option when the 2000
odd shapefiles are in a standard format already.</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>I was wondering if a
shapefile decimator existed?</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>Otherwise I might have to
go back to my friend</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>Thanks</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>Mike Sexton</span></font></p>
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