ncl_vvgetr man page

VVGETR — Gets the current value of a Vectors parameter of type REAL.

Synopsis

CALL VVGETR (CNM,RVL)

C-Binding Synopsis

#include <ncarg/ncargC.h>

void c_vvgetr(char *cnm, float *rvl)

Description

CNM
(CHARACTER, input) is the name of a parameter whose real value is to be retrieved. Only the first three characters of CNM are examined. The three characters may either be entirely upper or entirely lower case; mixed case is not recognized. It is recommended that the rest of the character string be used to improve the readability of the code. For example, instead of just ´DMX´, use ´DMX - Device Maximum Vector Size´.
RVL
(REAL, output) is a variable in which the value of the parameter specified by CNM is to be returned.

C-Binding Description

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

Usage

This routine allows you to retrieve the current value of Vectors parameters of type REAL. For a complete list of parameters available in this utility, see the vectors_params man page.

Examples

Use the ncargex command to see the following relevant examples: ffex02, ffex05, vvex01, vvex02.

Access

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

Messages

See the vectors man page for a description of all Vectors error messages and/or informational messages.

See Also

Online: vectors, vectors_params, vvectr, vvgetc, vvgeti, vvinit, vvrset, vvsetc, vvseti, vvsetr, vvudmv, vvumxy, ncarg_cbind.

Hardcopy: NCAR Graphics Fundamentals, UNIX Version

Info

April 1993 UNIX NCAR GRAPHICS