<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Hi Rick,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">As pointed by Alan, the climate division boundaries should align with the county boundaries, IF both were from NCL's default settings.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">I guess the problem lies in the "<a href="http://climdiv_polygon.nc">climdiv_polygon.nc</a>" file that I downloaded from NCL's website. The latitude and longitude provided by this file seem mismatched with the default NCL setting as shown below. Maybe there is another file that is more consistent with NCL's default setting?<br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Thanks</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Ling</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style><img src="cid:ii_14cc2c743ed66a9b" alt="Displaying image.png" width="492" height="563" style="margin-right: 0px;"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Apr 16, 2015 at 8:51 AM, Rick Brownrigg <span dir="ltr"><<a href="mailto:brownrig@ucar.edu" target="_blank">brownrig@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Hi Ling,<br><br></div>This is a tough one -- off hand it looks like a classic issue of mixing two disparate geodata sources of very different scales/resolutions, which typically incur alignment/registration issues. If that's what is going on, I don't think there's much you can really do about it. Do you know what are the relative scales of the different sources? Is there a reason to believe the climate division boundaries would align with the county (political) boundaries? (e.g., are they semi-arbitrarily defined that way for convenience?)<br><br></div>Rick <br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Wed, Apr 15, 2015 at 9:43 PM, Ling Huang <span dir="ltr"><<a href="mailto:hlbutterflyut@gmail.com" target="_blank">hlbutterflyut@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Dear NCL talk,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">I want to show boundaries of climate division and counties over the same plot. But the boundaries of climate divisions and counties are provided by different map dataset, which means I can only draw each at a time. Is there a way that I can show them at the same time? For example, I want to combine the following two plots into one plot.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">The left one shows the boundaries of climate divisions and the right one shows county. </div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><img src="cid:ii_14cc04fb93f7b9eb" alt="Inline image 1" style="margin-right:0px" height="182" width="159"><img src="cid:ii_14cc0501db7eee0e" alt="Inline image 2" style="margin-right:0px" height="182" width="159"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">I tried to load counties boundaries while reading the "<a href="http://climdiv_polygons.nc" target="_blank">climdiv_polygons.nc</a>" to plot a polyline for the climate division. But it seems the boundaries do not match, like below:</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><img src="cid:ii_14cc052bcbbac78d" alt="Inline image 3" height="455" width="399"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Is there a way that I can do this? </div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Thank you very much!</div><span><font color="#888888"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Ling</div></font></span></div>
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