<div dir="ltr">I would like to add a bit to Mary's description. A Raster-filled plot can work 2 different ways depending on the setting of the resource "cnRasterSmoothingOn". If cnRasterSmoothing is set False (the default), then the color assigned will depend on the value associated with the grid box or boxes that occupy the most area around the data value. Note that depending on the raster resolution there can be less than one or more than one data value contained in a single raster cell. <div>If cnRasterSmoothing on is set True then the value associated with a raster cell is calculated as a area-weighted average of all the data values within the cell. Then the color is determined by where this value falls within the array of contour levels setup by the user.</div><div> -dave</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Nov 11, 2016 at 9:12 AM, Mary Haley <span dir="ltr"><<a href="mailto:haley@ucar.edu" target="_blank">haley@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 class="gmail_default" style="font-size:small">Tao,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Please see attached script and image. This shows what a raster plot is doing. NCL constructs a box around each data value, and whatever range of your contour levels this data value falls in, the box will be filled in that color. </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The dots in the image show the X,Y locations of the data, which you can see are centered in the box that NCL constructs. The values show the actual value of that data point.</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"><div><div class="h5">On Fri, Nov 11, 2016 at 2:04 AM, Tao Lu <span dir="ltr"><<a href="mailto:hakufu.asano@gmail.com" target="_blank">hakufu.asano@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">Hello ncl-talk<div><br></div><div>When I plot raster contour, I have the data(nlon,nlat).</div><div><br clear="all"><div><img src="cid:ii_158529d2e6715c0d" alt="Inline image 1" width="243" height="173"><br></div><div>When I have one point data (red point), which color will be used to fill color?</div><div>Does raster fill work when if I have a varied delta lon or delta lat?</div><div><br></div><div>Thank you</div><div>Tao</div><div><br></div>-- <div class="m_7015068478776993896m_-3843555005882508526gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:12.8px"><span style="font-size:small;font-family:arial">******************************</span><span style="font-size:small;font-family:arial"><wbr>************************</span><br></div><div><span style="font-size:small;font-family:arial">Tao Lu (M. Eng)</span></div><div><span style="font-family:arial,helvetica,sans-serif;font-size:12.8px">Laboratory of River Engineering and Hydrology,</span><br style="font-family:arial;font-size:small"><span style="font-size:small;font-family:arial">Dept. of Civil and Environmental Engineering,</span><br style="font-family:arial;font-size:small"><span style="font-family:arial,helvetica,sans-serif;font-size:12.8px">Graduate School of Science and Engineering,</span><br style="font-family:arial;font-size:small"><span style="font-size:small;font-family:arial">Chuo University</span><br style="font-family:arial;font-size:small"><span style="font-size:small;font-family:arial"> </span><br style="font-family:arial;font-size:small">1-13-27<span style="font-size:small;font-family:arial">,Kasuga,Bunkyo-ku,Tokyo</span><br style="font-family:arial;font-size:small"><span style="font-size:small;font-family:arial">112-8551, Japan</span><br style="font-family:arial;font-size:small"><span style="font-size:small;font-family:arial">TEL: </span>03-3817-1805<font size="2" face="arial, helvetica, sans-serif"><span lang="EN-US">; </span></font><span style="font-family:arial,helvetica,sans-serif;font-size:small">Phone: 070-2188-7509</span><br style="font-family:arial;font-size:small"><span style="font-size:12.8px">Email1: </span><a href="mailto:mail%3Amet.yamos@gmail.com" style="font-size:12.8px;color:rgb(17,85,204)" target="_blank">hakufu.asano@gmail.com</a><br style="font-size:12.8px"><span style="font-size:12.8px">Email2: </span><a href="mailto:mail%3Ayamoto@civil.chuo-u.ac.jp" style="font-size:12.8px;color:rgb(17,85,204)" target="_blank">lutao@civil.chuo-u.ac.<wbr>jp</a><br style="font-family:arial;font-size:small"><span style="font-size:small;font-family:arial">******************************</span><span style="font-size:small;font-family:arial"><wbr>***********************</span><span style="font-size:12.8px"><br></span></div></div></div></div></div></div></div></div>
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