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diff --git a/math/surfit/doc/isresolve.hlp b/math/surfit/doc/isresolve.hlp new file mode 100644 index 00000000..afed8ed8 --- /dev/null +++ b/math/surfit/doc/isresolve.hlp @@ -0,0 +1,45 @@ +.help isresolve Aug85 "Surfit Package" +.ih +NAME +isresolve -- resolve the surface, same lines array +.ih +SYNOPSIS +include <math/surfit.h> + +isresolve (sf, lines, ier) + +.nf +pointer sf # surface grid descriptor +int lines[nlines] # surface grid line numbers, 1 <= lines[i] <= nlines +int ier # error code +.fi +.ih +ARGUMENTS +.ls sf +Pointer to the surface grid descriptor structure. +.le +.ls nlines +The number of surface grid lines to be fit. +.le +.ls ier +Error code returned by the fitting routines. The options are OK, SINGULAR, +and NO_DEG_FREEDOM. If ier = SINGULAR the matrix is singular, ISSOLVE +will compute a solution to the normal equations but one or more of the +coefficients will be zero. If ier = NO_DEG_FREEDOM, too few data points +exist for a reasonable solution to be computed. ISSOLVE returns without +fitting the data. +.le +.ih +DESCRIPTION +In some applications it is necessary to refit the same surface several +times with the same lines array. In this case it is inefficient to reaccumulate +the matrices and calculate the Cholesky factorization for each fit. +ISERESOLVE reaccumulates only the right side of the equation. +.ih +NOTES +It is the responsibility of the calling program to check for out of bounds +lines values. +.ih +SEE ALSO +issolve, isinit, slzero, islfit, islrefit, islaccum, islresolve, isfree +.endhelp |