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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello Grass Users,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Googling around, I see that I can interpolate scattered data by using v.surf.rst and use masks. I also see that Surfit (see <a href="http://surfit.sourceforge.net/">http://surfit.sourceforge.net/</a> ) can do it too. Anyone know of other methods?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Bob <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Tahoma","sans-serif"'>Bob Moskovitz<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Tahoma","sans-serif"'>California Geological Survey<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Tahoma","sans-serif"'>Seismic Hazards Zonation Program<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Arial","sans-serif";color:gray'>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, distribution, or copying of this communication is strictly prohibited.</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>