<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">I overlayed these 3 images in powerpoint increasing the transparency of them. The yellow boundary in the last plot does not overlap with the boundaries of the first image. </div><div class="gmail_default" style="font-family:verdana,sans-serif">The first 2 images overlap perfectly and the boundaries are coincident. Something is amiss with the plotting of the yellow boundaries in the last image. </div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">It might be worth seeing the script here. How are you combining them? </div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">Alan. </div></div><div class="gmail_extra"><br><div class="gmail_quote">On 16 April 2015 at 09:51, 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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