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<DIV><FONT face=Arial size=2>Hello Grass-Users,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I'm having problems with this sequence of
commands:<BR> r.to.vect -s input=lszone output=lszone10
feature=area<BR> v.clean input=lszone10 output=lszone10_clean
tool=rmarea thresh=2800</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Below is the output.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Overlaying lszone and lszone10_clean, I see that
there are large holes that have been replaced with polygons. Is this a
bug?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Btw, I've tried this with QGIS on Windows XP as
well as GRASS 6.4.svn with the same results.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Bob</FONT></DIV>
<DIV> </DIV><FONT face=Arial size=2>
<DIV><BR>======================================================================<BR>r.to.vect
-s in=lszone out=lszone10 feature=area<BR>Extracting
areas...<BR> 100%<BR> 100%<BR>Building topology for vector map
<lszone10>...<BR>Registering primitives...<BR>50074 primitives
registered<BR>629002 vertices registered<BR>Building
areas...<BR> 100%<BR>27613 areas built<BR>17107 isles built<BR>Attaching
islands...<BR> 100%<BR>Attaching centroids...<BR> 100%<BR>Number of
nodes: 39568<BR>Number of primitives: 50074<BR>Number of points: 0<BR>Number of
lines: 0<BR>Number of boundaries: 33886<BR>Number of centroids: 16188<BR>Number
of areas: 27613<BR>Number of isles: 17107<BR>Number of areas without centroid:
11425<BR>r.to.vect complete.<BR>v.clean in=lszone10 out=lszone10_clean
tool=rmarea
thresh=2800<BR>--------------------------------------------------<BR>Tool:
Threshold<BR>Remove small areas:
2.800000e+03<BR>--------------------------------------------------<BR>Copying
vector lines...<BR>Rebuilding parts of topology...<BR>Building topology for
vector map <lszone10_clean>...<BR>Registering primitives...<BR>50074
primitives registered<BR>629002 vertices registered<BR>Building
areas...<BR> 100%<BR>27613 areas built<BR>17107 isles built<BR>Attaching
islands...<BR> 100%<BR>Attaching centroids...<BR> 100%<BR>Number of
nodes: 39568<BR>Number of primitives: 50074<BR>Number of points: 0<BR>Number of
lines: 0<BR>Number of boundaries: 33886<BR>Number of centroids: 16188<BR>Number
of areas: 27613<BR>Number of isles: 17107<BR>Number of areas without centroid:
11425<BR>--------------------------------------------------<BR>Tool: Remove
small areas<BR>26251 areas of total size 9.34119e+06
removed<BR>--------------------------------------------------<BR>Rebuilding
topology for output vector map...<BR>Building topology for vector map
<lszone10_clean>...<BR>Registering primitives...<BR>4913 primitives
registered<BR>222687 vertices registered<BR>Building
areas...<BR> 100%<BR>1362 areas built<BR>1127 isles built<BR>Attaching
islands...<BR> 100%<BR>Attaching centroids...<BR> 100%<BR>Number of
nodes: 4678<BR>Number of primitives: 4913<BR>Number of points: 0<BR>Number of
lines: 0<BR>Number of boundaries: 4185<BR>Number of centroids: 728<BR>Number of
areas: 1362<BR>Number of isles: 1127<BR>Number of duplicate centroids:
3<BR>Number of areas without centroid: 637</DIV>
<DIV> </DIV>
<DIV>
<DIV class=Section1>
<P><B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Bob
Moskovitz</SPAN></B> <BR><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Research Analyst
I</SPAN></B> <BR><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Seismic Hazard Zonation
Project</SPAN></B><BR><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">California Geological
Survey</SPAN></B> <BR><B><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">http://www.conservation.ca.gov/cgs/shzp</SPAN></B><SPAN
style="COLOR: blue"><?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P><SPAN
style="FONT-SIZE: 7.5pt; COLOR: gray; FONT-FAMILY: Arial">CONFIDENTIALITY
NOTICE: This communication is intended only for the use of the individual or
entity to which it is addressed. This message contains information from the
State of California, California Geological Survey, which may be privileged,
confidential and exempt from disclosure under applicable law, including the
Electronic Communications Privacy Act. If the reader of this communication is
not the intended recipient, you are hereby notified that any dissemination,
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prohibited.</SPAN></P></DIV></FONT></DIV></BODY></HTML>