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.help iszero Aug85 "Surfit Package"
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NAME
iszero -- set up for a new surface fit
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SYNOPSIS
iszero (sf)

.nf
pointer	sf		# surface grid descriptor
.fi
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ARGUMENTS
.ls sf     
Pointer to the surface grid descriptor structure.
.le
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DESCRIPTION
ISZERO zeros all matrices and vectors used by the fitting program. It
should be used only if one wishes to refit the surface from scratch.
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NOTES
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SEE ALSO
isinit, islzero, islaccum, islfit, islrefit, islsolve, issolve, isfree
.endhelp