Section 3: library functions
VVRSET – Resets all parameters to their initial default values. Synopsis CALL VVRSET C-Binding Synopsis #include <ncarg/ncargC.h> void c_vvrset( void ) Description None. Usage This routine resets all Vectors parameters to their default values. For a complete list of the parameters affected and their default values, see the vectors_params man page. Access To use VVRSET…
VVINIT – Performs initialization tasks required before VVECTR may be called to plot a vector field, including copying array size information into internal common block variables, establishing coordinate system mappings and boundaries, determining the maximum and minimum vector magnitudes and scalar array values, and, if required, setting up the color threshold value array. Synopsis CALL…
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…
VVGETI – Gets the current value of a Vectors parameter of type INTEGER. Synopsis CALL VVGETI (CNM,IVL) C-Binding Synopsis #include <ncarg/ncargC.h> void c_vvgeti(char *cnm, int *ivl) Description CNM (CHARACTER, input) is the name of a parameter whose integer value is to be retrieved. Only the first three characters of CNM are examined. The three characters…
VVGETC – Gets the current value of a Vectors parameter of type CHARACTER. Synopsis CALL VVGETC (CNM,CVL) C-Binding Synopsis #include <ncarg/ncargC.h> void c_vvgetc(char *cnm, char *cvl, int len) Description CNM (CHARACTER, input) is the name of a parameter whose character value is to be retrieved. Only the first three characters of CNM are examined. The…
VVECTR – Manages the coordinate system mapping, color setting, auxiliary text output, and drawing of the vector field plot, according to the specifications established by the parameter setting routines and the initialization routine, VVINIT. Synopsis CALL VVECTR (U,V,P,IAM,VVUDMV,WRK) C-Binding Synopsis #include <ncarg/ncargC.h> void c_vvectr(float *u, float *v, float *p, int *iam, int (*vvudmv_)(float *xcs, float *ycs, int *ncs, int *iai,…
VELVEC – A older version of the Vectors utility, now a front-end to VELVCT. It is identical to the VELVCT call except that there is no LENGTH parameter to allow adjustment of the realized length of the maximum vector magnitude. Synopsis VELVEC (U,LU,V,LV,M,N,FLO,HI,NSET,ISPV,SPV) Status VELVEC is obsolete, and is supported only to provide compatibility with…
VELVCT – Plots a vector field, given two 2-dimensional vector component arrays, U and V. You may control certain characteristics of the plot by adjusting the values given to the input arguments. Other less frequently changed characteristics may be affected by modifying VELDAT, the BLOCK DATA routine that initializes members of the common blocks VEC1…
Vectors_params – This document briefly describes all Vectors internal parameters. Description Parameter descriptions follow, in alphabetical order. Each description begins with a line giving the three-character mnemonic name of the parameter, the phrase for which the mnemonic stands, the intrinsic type of the parameter, and an indication of whether or not it is an array….
Vectors – Utility for creating a vector field plot given two arrays containing the vector components on a uniform grid. In addition, the user may pass in another array of scalar data defined over the same grid space independent of but presumably related in some fashion to the vector data. The utility will then color…
VECTOR – generates a "pen-down" move to a specified point in the user coordinate system. VECTOR is used in conjunction with the routine FRSTPT to draw lines. Synopsis CALL VECTOR (PX,PY) C-Binding Synopsis #include <ncarg/ncargC.h> void c_vector (float px, float py) Description PX (an input expression of type REAL) defines the X user coordinate. PY…
VECTD – Defines the second and following of a sequence of points through which a curve is to be drawn. Synopsis CALL VECTD (X,Y) C-Binding Synopsis #include <ncarg/ncargC.h> void c_vectd (float x, float y) Description X (an input expression of type REAL) defines the X user coordinate of the next point in a sequence of…
VECT3 – Defines the second and all subsequent points in a sequence of points connected by straight-line segments, the projections of which are to be drawn. (FRST3 is called for the first point in the sequence and VECT3 is called for the rest.) Synopsis CALL VECT3 (U,V,W) C-Binding Synopsis #include <ncarg/ncargC.h> void c_vect3 (float u,…
TICKS – Allows for program control of tick mark length and direction. This routine has been superseded by TICK4, which should be used instead. Synopsis CALL TICKS(LMJR,LMNR) C-Binding Synopsis #include <ncarg/ncargC.h> void c_ticks (int lmjr, int lmnr) Description LMJR and LMNR See the description in the TICK4 man page. C-Binding Description The C-binding argument descriptions…
TICK43 – Gives user control of tick mark length in PERIM3. Synopsis CALL TICK43 (MAJORU,MINORU,MAJORV,MINORV,MAJORW,MINORW) C-Binding Synopsis #include <ncarg/ncargC.h> void c_tick43 (int majoru, int minoru, int majorv, int minorv, int majorw, int minorw) Description MAJORU (an input expression of type INTEGER) specifies the length of major ticks to be used on perimeter sides that are…
TICK4 – Allows for program control of tick mark length and direction. Synopsis CALL TICK4 (LMJX, LMNX, LMJY, LMNY) C-Binding Synopsis #include <ncarg/ncargC.h> void c_tick4 (int lmjx, int lmnx, int lmjy, int lmny) Description All arguments are in plotter address units (PAUs). By default, one PAU is 1/1023rd of the width of the plotter frame….
TICK43 – Gives user control of tick mark length in PERIM3. NOTE: At one time, the Threed routine TICK3 was used to set tick-mark length. TICK3 has been superseded by TICK43 and is therefore considered obsolete. If you call TICK3, it will call TICK43 for you. The statement CALL TICK3 (MAJOR,MINOR) should be replaced by…
THREED – 3-d line drawing package. Synopsis CURVE3 – Draws the projection of a curve defined by a sequence of points in 3-space. FENCE3 – Draws the projection of a curve, just as CURVE3 does, but with a "fence" of straight line segments that are parallel to one of the three axes and that extend…
TDSTRS – Set the values defining a selected rendering style, which affects the appearance of triangles drawn by a call to the routine TDDTRI. Synopsis CALL TDSTRS (IRST, IFC1, IFC2, IFC3, IFC4, ILC1, ILC2, ILTD, USTP, VSTP, WSTP) C-Binding Synopsis #include <ncarg/ncargC.h> void c_tdstrs(int irst, int ifc1, int ifc2, int ifc3, int ifc4, int ilc1,…
TDSTRI – Add triangles defining a simple surface to the triangles in a triangle list. Synopsis CALL TDSTRI (U, NU, V, NV, W, LW1D, RTRI, MTRI, NTRI, IRST) C-Binding Synopsis #include <ncarg/ncargC.h> void c_tdstri(float *u, int nu, float *v, int nv, float *w, int lw1d, float *rtri, int mtri, int *ntri, int irst) Description The…