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makegridpointc.1
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makegridpointc.1
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.\" Automatically generated by Pandoc 2.5
.\"
.TH "makegridpointc" "1" "2018\-01\-30" "Fortran 95" "SHTOOLS 4.4"
.hy
.SH MakeGridPointC
.PP
Evaluate a complex function expressed in complex spherical harmonics at
a single point.
.SH Usage
.PP
\f[C]value\f[R] = MakeGridPointC (\f[C]cilm\f[R], \f[C]lmax\f[R],
\f[C]lat\f[R], \f[C]lon\f[R], \f[C]norm\f[R], \f[C]csphase\f[R],
\f[C]dealloc\f[R])
.SH Parameters
.TP
.B \f[C]value\f[R] : output, complex*16
Value of the function at (\f[C]lat\f[R], \f[C]lon\f[R]).
.TP
.B \f[C]cilm\f[R] : input, complex*16, dimension (2, \f[C]lmax\f[R]+1, \f[C]lmax\f[R]+1)
The complex spherical harmonic coefficients of the function.
The coefficients \f[C]C1lm\f[R] and \f[C]C2lm\f[R] refer to the postive
and negative angular orders, respectively, with
\f[C]Clm=cilm(1,l+1,m+1)\f[R] and \f[C]Cl\-m=cilm(2,l+1,m+1)\f[R].
.TP
.B \f[C]lmax\f[R] : input, integer
The maximum spherical harmonic degree used in evaluating the function.
.TP
.B \f[C]lat\f[R] : input, real*8
The latitude of the point in DEGREES.
.TP
.B \f[C]lon\f[R] : input, real*8
The longitude of the point in DEGREES.
.TP
.B \f[C]norm\f[R] : input, optional, integer, default = 1
1 (default) = Geodesy 4\-pi normalized harmonics; 2 = Schmidt
semi\-normalized harmonics; 3 = unnormalized harmonics; 4 = orthonormal
harmonics.
.TP
.B \f[C]csphase\f[R] : input, optional, integer, default = 1
1 (default) = do not apply the Condon\-Shortley phase factor to the
associated Legendre functions; \-1 = append the Condon\-Shortley phase
factor of (\-1)\[ha]m to the associated Legendre functions.
.TP
.B \f[C]dealloc\f[R] : input, optional, integer, default = 0
0 (default) = Save variables used in the external Legendre function
calls.
(1) Deallocate this memory at the end of the funcion call.
.SH Description
.PP
\f[C]MakeGridPointC\f[R] will expand a complex function expressed in
complex spherical harmonics at a single point.
The input latitude and longitude are in degrees.
The employed spherical harmonic normalization and Condon\-Shortley phase
convention can be set by the optional arguments \f[C]norm\f[R] and
\f[C]csphase\f[R]; if not set, the default is to use geodesy 4\-pi
normalized harmonics that exclude the Condon\-Shortley phase of
(\-1)\[ha]m.
.SH See also
.PP
makegridpoint, makegriddh, makegriddhc, makegridglq, makegridglqc