Extraction of tangents on a curve

Posted by gelgel kol on Aug 28, 2005; 2:15am
URL: http://imagej.273.s1.nabble.com/FW-Got-a-CGI-bug-when-run-macro-from-the-command-line-tp3704974p3704975.html

Hi all,
I am drawing a best-fit curve that passes through a number points. Does anyone know how to get the tangent of any point along this curve?
I looked through the source code but couldn't find anything similar.
Any help would be appreciated.
thanks
khaled

 

               
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