<div dir="ltr"><div class="gmail_default" style="font-size:small">Dear Yidi Xue,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Unfortunately, I do not have these data files. The examples you reference were for an NCL workshop we conducted at CERFACS, and these scripts were for those students to use on their own datasets.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">NCL cannot generate vectors from triangular meshes (yet). Do you have the data in any other format, like two-dimensional lat/lon arrays?</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">One possible idea is to regrid your data, but you have to be careful with regridding vector data. You can read about vector regridding in the Climate Data Guide, <a href="https://climatedataguide.ucar.edu">https://climatedataguide.ucar.edu</a> (search on "regridding overview"):</div><div class="gmail_default" style="font-size:small"><br></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div class="gmail_default" style="font-size:small"><div id="stcpDiv">Vector
interpolation (eg, U, V) should be performed on the vector pair
simultaneously. Interpolating U, then separately, interpolating V may be
adequate for some purposes, but not if the interpolated vector
components were subsequently used to derive (say) divergence. An
indirect approach would be to (a) calculate the scalar quantities
vorticity and divergence on the source grid; (b) interpolate these
scalar quantities to the destination grid using standard methods; and
then, (c) derive the U and V from the rotational and divergent wind
components.</div></div></blockquote><div class="gmail_default" style="font-size:small"><div id="stcpDiv"><br></div></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, Nov 4, 2015 at 7:40 PM, 薛一迪 <span dir="ltr"><<a href="mailto:1027958839@qq.com" target="_blank">1027958839@qq.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><p class="MsoNormal" align="left" style="line-height:15.75pt"><span lang="EN-US" style="background:#f7f7f7">Dear the NCL webmaster,<u></u><u></u></span></p>
<p class="MsoNormal" align="left" style="line-height:15.75pt"><span lang="EN-US" style="background:#f7f7f7"> Hello, I am a
Chinese student, and I feel very sorry about that I will take your valuable
time. I want to use NCL to treat the files which the grid is ORCA025. I find
some examples in the website, such as <a href="http://www.ncl.ucar.edu/Training/Workshops/CERFACS/Scripts/ORCA/" target="_blank">http://www.ncl.ucar.edu/Training/Workshops/CERFACS/Scripts/ORCA/</a>
and <a href="http://www.ncl.ucar.edu/Applications/orca.shtml" target="_blank">http://www.ncl.ucar.edu/Applications/orca.shtml</a>.
I need the datasets in these examples because my files are different from them
and I want to know the information of them. The datasets are PSY4V2R1_1dAV_20110531_20110601_gridU_R20110601.nc and PSY4V2R1_1dAV_20110531_20110601_gridV_R20110601.nc . I do not find
them in the website. What’s more, I have attached the information and a script in a word. I want to draw a picture of the vector of the sea surface current velocity. But I fail to do that. This is my first time to treat ORCA dataset. It is a triangular grid. I do not know how to read them. Can you give
me some suggestions? <u></u><u></u></span></p>
<p class="MsoNormal" align="left" style="line-height:15.75pt"><span lang="EN-US" style="background:#f7f7f7"> Thanks for your time and
attention. I would appreciate it very much if you give me a reply.<u></u><u></u></span></p>
<p class="MsoNormal" align="left" style="line-height:15.75pt"><span lang="EN-US" style="background:#f7f7f7">Best regards,<u></u><u></u></span></p>
<p class="MsoNormal" align="left" style="line-height:15.75pt"><span lang="EN-US" style="background:#f7f7f7">Yidi Xue from China<u></u><u></u></span></p></div><br>_______________________________________________<br>
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