Provided by: libncarg-dev_6.3.0-6build1_amd64

**NAME**

TDPRPA - Given the parallelogram coordinates of a point, get the coordinates of its projection in the projection plane. This routine is essentially the inverse of the routine TDPRPI.

**SYNOPSIS**

CALL TDPRPA (XIPA, YIPA, XI2D, YI2D)

**C-BINDING** **SYNOPSIS**

#include <ncarg/ncargC.h> void c_tdprpa(float xipa, float yipa, float *xi2d, float *yi2d)

**DESCRIPTION**

The arguments of TDPRPA are as follows: XIPA and YIPA (input expressions of type REAL) - the parallelogram coordinates of a point. (The parallelogram is as defined by a prior call to TDPARA.) XI2D and YI2D (output variables of type REAL) - the coordinates of the projection of the point in the projection plane.

**C-BINDING** **DESCRIPTION**

The C-binding argument descriptions are the same as the FORTRAN argument descriptions.

**ACCESS**

To use TDPRPA or c_tdprpa, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.

**SEE** **ALSO**

Online: tdclrs, tdctri, tddtri, tdgeti, tdgetr, tdgrds, tdgrid, tdgtrs, tdinit, tditri, tdlbla, tdlbls, tdline, tdlnpa, tdmtri, tdotri, tdpack, tdpack_params, tdpara, tdplch, tdprpi, tdprpt, tdseti, tdsetr, tdsort, tdstri, tdstrs

**COPYRIGHT**

Copyright (C) 1987-2009 University Corporation for Atmospheric Research The use of this Software is governed by a License Agreement.