From 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 Mon Sep 17 00:00:00 2001
From: Joe Hunkeler <jhunkeler@gmail.com>
Date: Tue, 11 Aug 2015 16:51:37 -0400
Subject: Repatch (from linux) of OSX IRAF

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 math/iminterp/doc/msigrid.hlp | 51 +++++++++++++++++++++++++++++++++++++++++++
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 create mode 100644 math/iminterp/doc/msigrid.hlp

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+.help msigrid Dec98 "Image Interpolation Package"
+.ih
+NAME
+msigrid -- evaluate the interpolant on a grid of points
+.ih
+SYNOPSIS
+msigrid (msi, x, y, zfit, nx, ny, len_zfit)
+
+.nf
+    pointer	msi			#I interpolant descriptor
+    real	x[2*nx]			#I x values, 1 <= x[i] <= nx
+    real	y[2*ny]  		#I y values, 1 <= y[i] <= ny
+    real	zfit[len_zfit,ARB]	#O grid of interpolated values
+    int		nx			#I number of x points
+    int		ny			#I number of y points
+    int		len_zfit		#I length zfit, len_zfit >= nx
+.fi
+.ih
+ARGUMENTS
+.ls msi     
+Pointer to the interpolant descriptor structure.
+.le
+.ls x, y
+The x and y arrays of points to be evaluated, or in the case of the drizzle
+interpolant the x and y ranges over which the points are to be evaluated.
+The x and y arrays must be ordered in increasing values of x and y respectively.
+.le
+.ls zfit
+The array of interpolated points.
+.le
+.ls nx, ny
+The number of points in the x and y directions respectively.
+.le
+.ls len_zfit
+The row length of the zfit array. Len_zfit >= nx.
+.le
+.ih
+DESCRIPTION
+MSIGRID evaluates the interpolant at a set of x and y values on a
+rectangular grid or in the case of the drizzle interpolant within
+rectangular regions. It is most efficient for evaluating the interpolant
+at many values which are closely spaced in x and y. For widely spaced
+points MSIVECTOR should be used.
+.ih
+NOTES
+Checking for out of bounds and INDEF valued pixels is the responsibility
+of the user.
+.ih
+SEE ALSO
+msieval, msivector, msider, mrieval, mrider
+.endhelp
-- 
cgit 

