<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I’ve been looking at GRASS for a few months now and for the most can’t determine if I can transform coordinate systems of vector data or not. I’m stuck. All of the data I use (shapefiles) have been in the same reference system (I think it’s the reference system I’m talking about). I’ve been trying to merge two file that are not in the same reference system with no luck. Here are links to them.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any of these (Q3 FIRM Layer):<o:p></o:p></p><p class=MsoNormal><a href="http://www.mcgi.state.mi.us/mgdl/?rel=thext&action=thmname&cid=6&cat=Flood+Insurance+Rate+Maps+%28Q3+FIRMs%29">http://www.mcgi.state.mi.us/mgdl/?rel=thext&action=thmname&cid=6&cat=Flood+Insurance+Rate+Maps+%28Q3+FIRMs%29</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Into this <b>(</b><span class=title1><span style='font-family:"Calibri","sans-serif";color:windowtext;font-weight:normal'>National Flood Hazard Layer (NFHL) Database)</span></span>:<o:p></o:p></p><p class=MsoNormal><a href="https://msc.fema.gov/webapp/wcs/stores/servlet/CategoryDisplay?catalogId=10001&storeId=10001&categoryId=12011&langId=-1&userType=G&type=12">https://msc.fema.gov/webapp/wcs/stores/servlet/CategoryDisplay?catalogId=10001&storeId=10001&categoryId=12011&langId=-1&userType=G&type=12</a><o:p></o:p></p><p class=MsoNormal>Then select Michigan.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>One appears to be in decimal and the other in lat/lon. One has projection file and the other doesn’t<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If anyone can shed any light on the process to do this with GRASS or any other Open Source applications it would really be appreciated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Times New Roman","serif";color:black'>Regards,<br>Charles Deaton<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>