thanks. However, this is just a way to deal with simple case. For general use, someone has idea?<br><br>Edward<br><br><div class="gmail_quote">On Wed, Apr 28, 2010 at 12:43 AM, Eric Altshuler <span dir="ltr"><<a href="mailto:ela@cola.iges.org">ela@cola.iges.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello Edward,<br>
<br>
If you want to do a simple linear interpolation, compute a weighted average of the values at the two levels that bracket the level you want to interpolate to. Since in your case the two levels would be 100m and 200m, the linear interpolation to 185m would be given by:<br>
<br>
temp(z=185m) = 0.15*temp(z=100m) + 0.85*temp(z=200m)<br>
<br>
Best regards,<br>
<br>
Eric L. Altshuler<br>
Assistant Research Scientist<br>
Center for Ocean-Land-Atmosphere Studies<br>
4041 Powder Mill Road, Suite 302<br>
Calverton, MD 20705-3106<br>
USA<br>
<br>
E-mail: <a href="mailto:ela@cola.iges.org">ela@cola.iges.org</a><br>
Phone: (301) 902-1257<br>
Fax: (301) 595-9793<br>
<div><div></div><div class="h5"><br>
----- Original Message -----<br>
From: "weiqwang" <<a href="mailto:xhweiq@gmail.com">xhweiq@gmail.com</a>><br>
To: <a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>
Sent: Monday, April 26, 2010 12:36:34 PM<br>
Subject: [gradsusr] display variable at depth between two layers<br>
<br>
hi, gradsusers,<br>
<br>
<br>
I have one simple question which might involves the interpolation. My<br>
data is defined at depth for example from 0m to 1000m, with regular<br>
interval 100m ( 11 layers in total). When I want to display variable<br>
(such as temp) at depth 185m, I found temperature at 200m was shown. How<br>
can I get the temperature at 185m ( expect a linear interpolation<br>
results)?<br>
<br>
Any suggestions are appreciated.<br>
<br>
Edward<br>
<br>
<br>
<br>
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