plot::vector
-- graphical object
for vectorsplot::vector
(p1, p2)
returns a polygon
consisting of three lines. Theses lines are connecting the points
p1 with p2 and the endpoints of the arrow with
the point p2.
plot::vector(p1, p2, angle, l <, option1,
option2...>)
p1, p2 |
- | points with real valued coordinates, i.e., objects of
the domain type plot::Point or lists of two or three
real numerical values, respectively |
angle, l |
- | real numerical values |
option1, option2, ... |
- | plot option(s) of the form option =
value |
a graphical object of the domain type plot::Polygon
.
plot
, plot2d
, plot3d
, plot::Polygon
angle
specifies the angle (in radian measure) between
the line and the arrow.l
specifies the length of the arrow.plot
to display the result on the screen.option1
, option2
... must
be valid plot options for two- or three-dimensional graphical objects,
respectively. See plot2d
and plot3d
for details.
Note that scene options are not allowed! You may
give scene options as optional arguments for the function plot
, or use plot::Scene
to create an object
representing a graphical scene.
We define a vector starting at (1;2) and ending at (3;-1):
>> v := plot::vector([1, 2], [3, -1], 0.2, 0.1)
plot::Polygon()
The lenght of the arrow is 0.1, and the angle between the line and the arrow is 0.2 (in radian measure).
To plot this vector, call plot
:
>> plot(v)
To change the color of the vector from the previous example, enter:
>> v::Color := RGB::Blue: plot(v, Axes = None)
Here the scene option Axes = None
was
given.