<div dir="ltr"><div class="gmail_default" style="font-size:small">Marston,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">There could be a few things going on here.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">One is simply that your lat/lon values are not quite correct.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Are you setting tfDoNDCOverlay to True by any chance? If you are trying to use a native projection and you don't have the native projection parameters set exactly right, then the plot can be slightly misaligned.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">One thing I would suggest is plotting the observational lat/lon values as markers on your second plot to see if they are also misaligned with the coastlines. You should be able to use gsn_add_polymarker to plot the markers.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Finally, as usual, if you can provide the data for the observational plot, and a script, then I can take a look.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">--Mary</div><div class="gmail_default" style="font-size:small"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jan 25, 2017 at 3:17 AM, Marston Johnston <span dir="ltr"><<a href="mailto:marston.johnston@gu.se" target="_blank">marston.johnston@gu.se</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>Hi,</div>
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<div>I’ve binned (bin_sum) some MHS data to a model grid using rational lats and lons values (see linked <a href="https://www.dropbox.com/s/fi6s577iio47u4w/mhs_t511_si_contour.pdf?dl=0" target="_blank">fig</a>).</div>
<div>The upper panel in the figure is the model data but the bottom figure is from the observations. As you can see the</div>
<div>coastlines are slightly off and I cannot figure out why. Does anyone have any idea why this is happening to the bin_sum figure?</div>
<div>I’ve used the same set of lats and lons consistently throughout the process.</div>
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<div>Any hint/help is appreciated.</div>
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<div class="m_8682350863920045591matchFont">/M<br style="font-size:14px;font-family:-apple-system,BlinkMacSystemFont,sans-serif">
<br style="font-size:14px;font-family:-apple-system,BlinkMacSystemFont,sans-serif">
Marston S. Johnston, PhD<br style="font-size:14px;font-family:-apple-system,BlinkMacSystemFont,sans-serif">
Department of Earth Sciences<br style="font-size:14px;font-family:-apple-system,BlinkMacSystemFont,sans-serif">
University of Gothenburg, Sweden<br style="font-size:14px;font-family:-apple-system,BlinkMacSystemFont,sans-serif">
Email: <a href="mailto:marston.johnston@gu.se" target="_blank">marston.johnston@gu.se</a><br style="font-size:14px;font-family:-apple-system,BlinkMacSystemFont,sans-serif">
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Only the fruitful thing is true!</div>
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