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diff --git a/math/iminterp/doc/asifit.hlp b/math/iminterp/doc/asifit.hlp new file mode 100644 index 00000000..bcd1fdc8 --- /dev/null +++ b/math/iminterp/doc/asifit.hlp @@ -0,0 +1,40 @@ +.help asifit Dec98 "Image Interpolator Package" +.ih +NAME +asifit - fit the interpolant to data +.ih +SYNOPSIS +asifit (asi, datain, npix) + +.nf + pointer asi #I interpolant descriptor + real datain[npix] #I input data + int npix #I the number of data points +.fi +.ih +ARGUMENTS +.ls asi +Pointer to sequential interpolant descriptor structure. +.le +.ls datain +Array of input data. +.le +.ls npix +Number of data points. +.le +.ih +DESCRIPTION +The datain array is checked for size, memory is allocated for the coefficient +array, and the end conditions are specified. The interior polynomial, sinc and +drizzle interpolants are saved as the data points. The polynomial coefficients +are calculated directly from the data points in the evaluation stage. The +B-spline coefficients are calculated in ASIFIT as they depend on the entire +data array. +.ih +NOTES +Checking for INDEF valued and out of bounds pixels is the responsibility +of the user. ASIINIT or ASISINIT and ASIFIT must be called before using +ASIEVAL, ASIVECTOR, ASIDER or ASIGRL. +.ih +SEE ALSO +.endhelp |