A 'French Curve' Computer Plotting Subroutine.
NAVAL RESEARCH LAB WASHINGTON D C
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A computer subroutine has been developed which will result in a smooth-curve plot through a given set of data points, similar to the plot that a draftsman would produce using a French curve. The method is especially useful when it is desired to plot a smooth curve through computed points and the computation of each point is fairly lengthy, so that excessive computer time would be used if a smooth curve were plotted by direct computation of an adequate number of points. It can also be used to plot a curve through experimental data points if the measurements are sufficiently precise -- that is, if there is not a significant amount of random error in the measurements. The method produces a curve that exactly passes through each of the given data points, rather than giving a least-squares best fit curve. The plotting algorithm is described and examples of its use are given. Author
- Computer Programming and Software
- Computer Hardware