ncl_dspnt2d man page

DSPNT2D- Interpolate at a single point (or points) in 2D in double precision

Synopsis

CALL DSPNT2D (N, X, Y, Z, M, XO, YO, ZO, IER)

Description

N
(Integer, Input) - The number of input data points.
X
(Double precision, Input) - An array containing the X coordinates of the input data points.
Y
(Double precision, Input) - An array containing the Y coordinates of the input data points.
Z
(Double precision, Input) - An array containing the functional values of the input data points. That is, Z(L) is the value of the input function at coordinate (X(L),Y(L)), for L=1,N.
M
(Integer, Input) - The number of output data points (this may be "1").
XO
(Double precision, Input) - An array of dimension M containing the X coordinates of the output data. The values in XO may be in any order.
YO
(Double precision, Input) - An array of dimension M containing the Y coordinates of the output data. The values in YO may be in any order.
ZO
(Double precision, Output) - An array of dimension M containing the interpolated values. ZO(I) is the interpolated value at point (XO(I),YO(I)) for I=1,M.
IER
(Integer, Output) - An error return value. If IER is returned as 0, then no errors were detected. If IER is non-zero, then refer to the man page for dsgrid_errors for details.

Usage

This subroutine is called when you want to interpolate at an individual point or points.

Access

To use DSPNT2D, load the NCAR Graphics library ngmath.

See Also

dsgrid, dsgrid_params.

Complete documentation for Dsgrid is available at URL
http://ngwww.ucar.edu/ngdoc/ng/ngmath/d…

Info

September 1997-1998 UNIX NCAR GRAPHICS