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Question: track down this error?

Question:track down this error?

johnguin 4
curvefitting plots
September 12 2005
0
Hello all, I'm trying to use Maple 9.5 to interpolate the data from the points in the worksheet below. I would have attached the 3K file but the web page says the file size is too big. The spline function gives me what appears to be a valid (if big and complicated) piecewise function, but I get an error when I try to plot it. I'm a little confused since I followed the help file for the spline function closely. Any ideas on how to troubleshoot this error? I get "Warning, unable to evaluate the function to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct" After checking the plot function and verifying the piecewise function does indeed evaluate at each point, I'm stuck. Thanks in advance, John > restart; > with(CurveFitting): > with(plots): Warning, the name changecoords has been redefined > points1:=[[1,50],[2,54],[3,59],[4,63],[5,66],[6,66],[7,62],[8,55],[9,55],[10,54],[11,51],[12,53],[13,56],[14,57],[15,53],[16,49],[17,47],[18,49],[19,54]]: > polycurve:=PolynomialInterpolation(points1,v): > pntplot1 := pointplot(points1,symbol=BOX): > polyplot := plot(polycurve,v=0..50): > display(polyplot): > splcurve=Spline(points1,v): > splplot := plot(splcurve,v=0..40); Warning, unable to evaluate the function to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct splplot := INTERFACE_PLOT(AXESLABELS("v", ""), VIEW(0. .. 40., DEFAULT))
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