<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">Ahh, I misunderstood a little and tried to go for the easy answer. </div><div class="gmail_default" style="font-family:verdana,sans-serif"> I defer to Rick's message then. </div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">Good luck. </div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">p.s. try and keep ncl-talk in the cc list. </div><div class="gmail_extra"><br><div class="gmail_quote">On 16 April 2015 at 11:10, Ling Huang <span dir="ltr"><<a href="mailto:hlbutterflyut@gmail.com" target="_blank">hlbutterflyut@gmail.com</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 style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Hi Alan,</div><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div><font color="#000000" face="verdana, sans-serif">Thank you very much for your help. </font></div><div><font color="#000000" face="verdana, sans-serif"><br></font></div><div><font color="#000000" face="verdana, sans-serif">For the first image which shows climate division boundary, I used the following resources setting:</font></div><div><font color="#000000" face="verdana, sans-serif"><br></font></div><div><font face="verdana, sans-serif"><div style="color:rgb(0,0,0)">res@mpOutlineBoundarySets = "AllBoundaries"</div><div style="color:rgb(0,0,0)">res@mpDataBaseVersion = "Ncarg4_1"<br></div><div style="color:rgb(0,0,0)">res@mpDataSetName = "Earth..3"<br></div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">For the second image which shows the county boundary, I used the following:</div><div style="color:rgb(0,0,0)"><br></div><div><div style="color:rgb(0,0,0)">res@mpOutlineBoundarySets = "GeophysicalAndUSStates"<br></div><div style="color:rgb(0,0,0)">res@mpDataBaseVersion = "Ncarg4_1"</div><div><font color="#ff0000">res@mpDataSetName = "Earth..2"</font><br></div><div style="color:rgb(0,0,0)">texas_counties = (/"Travis"/)<br></div><div style="color:rgb(0,0,0)">res@mpOutlineSpecifiers = "Texas . " + texas_counties</div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">These two images should overlap perfectly since they are from NCL's default setting.</div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">For the third image where I tried to plot both the county and climate region boundary, I downloaded the "<a href="http://climdiv_polygons.nc" target="_blank">climdiv_polygons.nc</a>" from NCL's website which contains the latitude and longitude of each climate regions and plot a polyline based on that. For counties, I still used NCL's default setting. So the command is like below:</div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)"><div>res@mpOutlineBoundarySets = "GeophysicalAndUSStates"<br></div><div>res@mpDataBaseVersion = "Ncarg4_1"</div><div style="color:rgb(34,34,34)"><font color="#ff0000">res@mpDataSetName = "Earth..2"</font><br></div><div>texas_counties = (/"Travis"/)<br></div><div>res@mpOutlineSpecifiers = "Texas . " + texas_counties</div><div><br></div></div></div><div><div><font color="#000000">ncdf = addfile("<a href="http://climdiv_polygons.nc" target="_blank">climdiv_polygons.nc</a>","r")</font></div><div><span style="color:rgb(0,0,0)">x = ncdf->TX_CD3@lon</span><br></div><div><font color="#000000">y = ncdf->TX_CD3@lat</font></div><div><font color="#000000">dum = gsn_add_polyline(wks,plot(0),x,y,res_poly)</font></div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">So I would guess the mismatch between the climate region and county boundaries would be the incorrect number from the "<a href="http://climdiv_polygons.nc" target="_blank">climdiv_polygons.nc</a>" files. I also plotted the climate division boundary both from the "<a href="http://climdiv_polygons.nc" target="_blank">climdiv_polygons.nc</a>" file and NCL's default setting, the two do not match as below:</div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)"><img src="cid:ii_14cc2c743ed66a9b" alt="Inline image 1" width="491" height="562" style="margin-right:0px"><br></div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">Thank you</div><span class="HOEnZb"><font color="#888888"><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">Ling</div></font></span></div></font></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Apr 16, 2015 at 9:43 AM, Alan Brammer <span dir="ltr"><<a href="mailto:abrammer@albany.edu" target="_blank">abrammer@albany.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 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 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 style="font-family:verdana,sans-serif"><br></div><div style="font-family:verdana,sans-serif">It might be worth seeing the script here. How are you combining them? </div><span><font color="#888888"><div style="font-family:verdana,sans-serif"><br></div><div style="font-family:verdana,sans-serif"><br></div><div style="font-family:verdana,sans-serif">Alan. </div></font></span></div><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>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><div dir="ltr"><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Dear NCL talk,</div><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div 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 style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div 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 style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div 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 style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div 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 style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div 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 style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div 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 style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Thank you very much!</div><span><font color="#888888"><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(0,0,0)">Ling</div></font></span></div>
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