DOKK / manpages / debian 10 / libncarg-dev / isosurface.3ncarg.en
Isosurface(3NCARG) NCAR GRAPHICS Isosurface(3NCARG)

Isosurface - Allows the user to draw a perspective view of the surface defined by the equation f(u,v,w)=fiso, where the function f is approximated by a 3-dimensional array of data and fiso is a user-specified "isovalue". Contours created by taking slices in any of three directions through the surface are drawn with hidden portions of the contour lines removed.

EZISOS - May be called to draw an isosurface.

ISOSRF - May be called to draw an isosurface.

ISGETI - Retrieves the current values of various internal parameters affecting the behavior of ISOSRF.

ISGETR - Retrieves the current values of various internal parameters affecting the behavior of ISOSRF.

ISSETI - Gives new values to internal parameters.

ISSETR - Gives new values to internal parameters.

PWRZI - Plots characters in three-space when using ISOSRF.

c_ezisos,
c_isosrf,
c_isgeti,
c_isgetr,
c_isseti,
c_issetr,
c_pwrzi

None.

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

The error messages described below can be written to the output unit by routines in the package Isosurface. All of these errors are fatal and cause the user's program to terminate execution (on the other hand, all of the errors are easily avoided).

The argument "PNAM", in a call to ISGETI or ISGETR, is only one character long.
The argument "PNAM", in a call to ISGETI or ISGETR, begins with two characters that do not constitute one of the legal internal parameter names described in the man page isosurface_params.
The argument "PNAM", in a call to ISSETI or ISSETR, is only one character long.
The argument "PNAM", in a call to ISSETI or ISSETR, begins with two characters that do not constitute one of the legal internal parameter names described in the man page isosurface_params.
This error message means that the screen models used to do hidden-line removal have been found to be improperly dimensioned for the system on which the code is being run. About the only way this can happen is if the distributed code is run on a a machine with sixteen-bit words or if the distributed code has been modified incorrectly.

Online: isosurface_params, ezisos, isgeti, isgetr, isosrf, isseti, issetr, pwrzi, ncarg_cbind

Hardcopy: NCAR Graphics Fundamentals, UNIX Version

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

March 1993 UNIX