Splines under tension
-----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of sam.e Sent: Sunday, May 16, 2010 10:13 AM To: r-help at r-project.org Subject: Re: [R] Splines under tension Thank you for the helpful direction to the smoothing splines function, it was very helpful and is exactly what i am trying to do. My data however is 3-D, i.e. i have x and y values which are coordinates for different field sites and z values which are really what I am interested in analysing with interpolation.
Look into the 'Tps' (thin plate splines) package. Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com
This has posed a problem with many of the spline functions in R. Even if i input my coordinate data as a matrix as my 'x' value and my site data as my 'y' values i get the following error: Error in xy.coords(x, y) : 'x' and 'y' lengths differ I have made sure that there are the same amount of values and that they are all of the same type, i.e. numeric but with little luck and i am a bit lost as to what to try next. Does anyone have any suggestions? Thanks, Sam -- View this message in context: http://r.789695.n4.nabble.com/Splines-under-tension-tp2173887p
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