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- polarplot
Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
See the recommended documentation of this function
polarplot
Plot polar coordinates
Calling Sequence
polarplot(theta,rho,[style,strf,leg,rect]) polarplot(theta,rho,<opt_args>)
Arguments
- rho
a vector, the radius values
- theta
a vector with same size than rho, the angle values.
- <opt_args>
a sequence of statements
key1=value1, key2=value2
, ... where keys may bestyle
,leg
,rect
,strf
orframeflag
- style
is a real row vector of size nc. The style to use for curve
i
is defined bystyle(i)
. The default style is1:nc
(1 for the first curve, 2 for the second, etc.).- -
if
style(i)
is negative, the curve is plotted using the mark with idabs(style(i))+1
; usexset()
to see the mark ids.- -
if
style(i)
is strictly positive, a plain line with color idstyle(i)
or a dashed line with dash idstyle(i)
is used; usexset()
to see the color ids.- -
When only one curve is drawn,
style
can be the row vector of size 2[sty,pos]
wheresty
is used to specify the style andpos
is an integer ranging from 1 to 6 which specifies a position to use for the caption. This can be useful when a user wants to draw multiple curves on a plot by calling the functionplot2d
several times and wants to give a caption for each curve.
- strf
is a string of length 3
"xy0"
.- default
The default is
"030"
.- x
controls the display of captions,
- x=0
no captions.
- x=1
captions are displayed. They are given by the optional argument
leg
.
- y
controls the computation of the frame. same as frameflag
- y=0
the current boundaries (set by a previous call to another high level plotting function) are used. Useful when superposing multiple plots.
- y=1
the optional argument
rect
is used to specify the boundaries of the plot.- y=2
the boundaries of the plot are computed using min and max values of
x
andy
.- y=3
like
y=1
but produces isoview scaling.- y=4
like
y=2
but produces isoview scaling.- y=5
like
y=1
butplot2d
can change the boundaries of the plot and the ticks of the axes to produce pretty graduations. When the zoom button is activated, this mode is used.- y=6
like
y=2
butplot2d
can change the boundaries of the plot and the ticks of the axes to produce pretty graduations. When the zoom button is activated, this mode is used.- y=7
like
y=5
but the scale of the new plot is merged with the current scale.- y=8
like
y=6
but the scale of the new plot is merged with the current scale.
- leg
a string. It is used when the first character x of argument
strf
is 1.leg
has the form"leg1@leg2@...."
whereleg1
,leg2
, etc. are respectively the captions of the first curve, of the second curve, etc. The default is""
.- rect
This argument is used when the second character y of argument
strf
is 1, 3 or 5. It is a row vector of size 4 and gives the dimension of the frame:rect=[xmin,ymin,xmax,ymax]
.
Description
polarplot creates a polar coordinate plot of the angle theta versus the radius rho. theta is the angle from the x-axis to the radius vector specified in radians; rho is the length of the radius vector specified in dataspace units. Note that negative rho values cause the corresponding curve points to be reflected across the origin.
Example 3
t = 0:0.01:2*%pi; polarplot(t, -1 + sin(t));
Example 4
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