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vec

Set plotting options for the vector plot.

Synopsis:

vec option=value [,option=value, ...]

Arguments:

option

A plot option for the vector plot. See table below.

value

A value associated with the matching option . See table below.

Option

Value

Value Meaning

Default Value

headsize

real number > 0.0

Size of the arrow head as a fraction of the arrow length.

0.25

lc

line color

Line color. Color Names A color index may be used in place of a color name.

white

legend

on, off

Whether or not a legend should be displayed with the plot.

on

ls

dash, dot,
dotdash, solid

Line style. Line Styles

solid

lt

1 <= integer <= 4

Number to indicate thickness. 1 is the most thin, and 4 is the thickest.

1.0

numvec

integer > 0

Number of vectors to plot.The total number of nodes in the problem is divided by the number of desired vectors (this number) to get a stride. This stride is used to stride through the coordinate arrays to pick out points to put vectors on.

400

pop

pop

off

size

real number > 0.0

Magnification scale. A multiplier for manipulating the vector length.

1.0

var

variable name

Name of variable to get vector data from.

velocity

Description:

The vec command sets the options used when generating a vector plot. Note that this command does not change existing vector plots, only future ones. The variable read by the vector plot is a special merged multi-value variable which may be created with the ­ defvar command.

Examples:

vec lc=green, size=2.5

vec var=myvelocity

See Also:

plot , defvar


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