<div dir="ltr"><div><div><div><div><div><div>NCL does *not* have a supported exponential curve fit function.<br>----<br><br></div>I am sure you could google for sophisticated exponential curve fitting algorithms in fortran or C or C++. These could be called fom NCL. <br> <a href="https://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclExtend.shtml" target="_blank">https://www.ncl.ucar.edu/<wbr>Document/Manuals/Ref_Manual/<wbr>NclExtend.shtml</a><br><br>----<br></div>Attached is a very simple function based on the methodology outlined in 'MathWorld'. Specifically: <a href="http://mathworld.wolfram.com/LeastSquaresFittingExponential.html">http://mathworld.wolfram.com/LeastSquaresFittingExponential.html</a><br><br>----<br></div>%> ncl exponential_curve_fit.ncl<br><br>----<br></div>This function is *not supported*. <br>It is *not documented*.<br></div>It is *not well tested*.<br><br></div>Good Luck<br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jun 14, 2017 at 4:02 PM, Xi Chang <span dir="ltr"><<a href="mailto:xi.chang01@gmail.com" target="_blank">xi.chang01@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>Dear NCL team,</div><div><br></div>I am wondering if there is any function that can be used to perform an exponential fitting for a time series?<div><br></div><div>Thanks</div><span class="HOEnZb"><font color="#888888"><div>Chang</div></font></span></div>
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