<div dir="ltr">Yes - <div><br></div><div>I am hoping to achieve a sub-meter transformation between the two datums. Also - we would ideally like to go from ITRF 2008 to Is Proj4js an appropriate tool to do this? Can it handle a grid shift transform?</div><div><br></div><div>Thanks,</div><div><br></div><div>Nick<br><br><div class="gmail_quote"><div dir="ltr">On Wed, Feb 22, 2017 at 1:02 PM Richard Greenwood <<a href="mailto:richard.greenwood@gmail.com">richard.greenwood@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="gmail_msg"><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg">On Wed, Feb 22, 2017 at 10:26 AM, Nick Fordes <span dir="ltr" class="gmail_msg"><<a href="mailto:nick.fordes@locusview.com" class="gmail_msg" target="_blank">nick.fordes@locusview.com</a>></span> wrote:<br class="gmail_msg"><blockquote class="gmail_quote gmail_msg" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class="gmail_msg">Hi - <div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">I am using the Proj4js library and am having trouble successfully transforming coordindates from ITRF 2008 (EPSG:5332) to NAD83 (2011) (EPSG:6317).</div></div></blockquote><div class="gmail_msg"><br class="gmail_msg"></div></div></div></div><div dir="ltr" class="gmail_msg"><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg"><div class="gmail_msg">Are you getting an error or incorrect results? The espg definitions for 5332 and 6317 are the same (see below) but that's not to say they are correct.</div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg"><div class="gmail_msg"># ITRF2008 <5332> +proj=geocent +ellps=GRS80 +units=m +no_defs <></div></div><div class="gmail_msg"><div class="gmail_msg"># NAD83(2011) <6317> +proj=geocent +ellps=GRS80 +units=m +no_defs <></div></div></div></div></div><div dir="ltr" class="gmail_msg"><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg"><div class="gmail_msg"> <br class="gmail_msg"></div><blockquote class="gmail_quote gmail_msg" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class="gmail_msg"><div class="gmail_msg">I have bee successful in entering coordinates into the following tool and generating results for going from WGS83 (EPSG4326) to NAD83 (2011) (EPSG:6317), however, there is no transformation applied. <br class="gmail_msg"></div></div></blockquote><div class="gmail_msg"><br class="gmail_msg"></div></div></div></div><div dir="ltr" class="gmail_msg"><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg"><div class="gmail_msg">"NAD" datums are tied to the North American continental plate, "WGS" datums are tied to the center of the earth. To get meter or sub-meter accuracy transformations you need to use a grid shift transform. Is that what you're looking for when you say that no transformation is applied?</div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg"><br class="gmail_msg"></div></div></div></div><div dir="ltr" class="gmail_msg"><div class="gmail_extra gmail_msg"><br clear="all" class="gmail_msg"><div class="gmail_msg"><br class="gmail_msg"></div>-- <br class="gmail_msg"><div class="m_7363324817088537231gmail_signature gmail_msg"><div dir="ltr" class="gmail_msg">Richard W. Greenwood, PLS<br class="gmail_msg"><a href="http://www.greenwoodmap.com" class="gmail_msg" target="_blank">www.greenwoodmap.com</a></div></div>
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