plvec2
( | u, |
v, | |
nx, | |
ny, | |
scale, | |
xg, | |
yg) ; |
Draws a vector plot of the data in
(
.
u
[nx
][ny
], v
[nx
][ny
])
u, v
(PLFLT **
, input)
Pointer to a pair of vectored two-dimensional arrays containing the x and y components of the vector to be plotted.
nx, ny
(PLINT
, input)
Physical dimensions of the arrays
and
u
.
v
scale
(PLFLT
, input)
Parameter to control the scaling factor of the vectors for plotting.
If
then
the scaling factor is automatically calculated for the data.
If scale
= 0
then
the scaling factor is automatically calculated for the data and
then multiplied by scale
< 0-
.
If scale
then
the scaling factor is set to scale
> 0
.
scale
xg, yg
(PLFLT *
, input)
Pointers to arrays which specify the transformation from array
indices to world coordinates. These must be two-dimensional
arrays, used for a transformation of the form:
tx
= f(x, y)
,
ty
= f(x, y)
. Function
values at locations between grid points are obtained via linear
interpolation.
NOTE: this function is intended for use from a Fortran 77 caller only.
The C user should instead call plvect
using the built-in
transformation function pltr2
for the same
capability.