Basic Information on warpfit

Task: warpfit
Purpose: Non linear Least Squares Fitting for Parablic Panels.
Categories: misc, utility

WARPFIT determines the RMS deviation for a paraboloid
 with a focal length of 100.8 inches for a maximum of 600 data points.
The rotation angle is set to zero. Data should be free format:
            x(1)    y(1)    z(1)
            x(2)    y(2)    z(2)
             .       .       .  
            x(i)    y(i)    z(i)
 The y-axis runs along the panel centerline
 The x-axis is perpendicular to the centerline
 The z-axis is the depth of the machining measured from the (x,y) plane.

Key: in
Input ascii file with up to 9 columns of data. No default.

Key: npts
Select the first ``npts'' from the input file.
Default reads the whole file or 2000 which is the maximum allowed.

Key: par
Initial estimates for parameters; rotations(degrees) and offsets(inches).
Exactly 6 numbers are needed here:  xrot,yrot,z0,warp,angle,y0

Key: nfit
Number of paramters to fit. Remaining parameters are fixed.
E.g. nfit=3 would only fit xrot,yrot,z0, leaving warp,angle,y0 fixed.
Default: nfit=3

Key: swapxy
Swap x and y axes. Y or N, Default=No.

Key: log
Output logfile. It will contain the results, a histogram
with residuals and all selected measurements, the fit, and residuals.
Default: print results and histogram only to terminal.

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