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- contour2d
- contour2di
- contourf
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- fec_properties
- fgrayplot
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- paramfplot2d
- plot
- plot2d
- plot2d1
- plot2d2
- plot2d3
- plot2d4
- plot2d_old_version
- polarplot
Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
However, this page did not exist in the previous stable version.
plot2d_old_version
The syntaxes described below are obsolete
Calling Sequence
plot2d([logflag],x,y,[style,strf,leg,rect,nax])
Arguments
- x,y
two matrices (or column vectors).
in the usual way
x
is a matrix of the same size thany
(the column j ofy
is plotted with respect to column j ofx
)if all the columns of
x
are equal (ie the abscissae of all the curves are the same),x
may be simply the (column) vector of these abscissae (x
is then a column vector of length equal to the row dimension ofy
).when
x
is not given, it is supposed to be the column vector [1; 2; ...; row dimension of y].
- 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 or zero, the curve is plotted using the mark with idabs(style(i))
; usexset()
to set the mark id and xget('mark') to get the current mark id.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.
- strf
is a string of length 3
"xyz"
(by defaultstrf= "081"
)- x
controls the display of captions.
- x=0
no caption.
- x=1
captions are displayed. They are given by the optional argument
leg
.
- y
controls the computation of the actual coordinate ranges from the minimal requested values. Actual ranges can be larger than minimal requirements.
- y=0
no computation, the plot use the previus (or default) scale
- y=1
from the rect arg
- y=2
from the min/max of the x, y datas
- y=3
built for an isometric scale from the rect arg
- y=4
built for an isometric plot from the min/max of the x, y datas
- y=5
enlarged for pretty axes from the rect arg
- y=6
enlarged for pretty axes from the min/max of the x, y datas
- y=7
like y=1 but the previus plot(s) are redrawn to use the new scale
- y=8
like y=2 but the previus plot(s) are redrawn to use the new scale
- z
controls the display of information on the frame around the plot. If axes are requested, the number of tics can be specified by the
nax
optional argument.- z=0
nothing is drawn around the plot.
- z=1
axes are drawn, the y=axis is displayed on the left.
- z=2
the plot is surrounded by a box without tics.
- z=3
axes are drawn, the y=axis is displayed on the right.
- z=4
axes are drawn centred in the middle of the frame box.
- z=5
axes are drawn so as to cross at point
(0,0)
. If point(0,0)
does not lie inside the frame, axes will not appear on the graph.
- 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]
.- nax
This argument is used when the third character z of argument
strf
is 1. It is a row vector with four entries[nx,Nx,ny,Ny]
wherenx
(ny
) is the number of subgraduations on the x (y) axis andNx
(Ny
) is the number of graduations on the x (y) axis.- logflag
a string formed by to characters h (for horizontal axis) and v (for vertical axis) each of these characters can take the values "n" or "l". "l" stands for logarithmic graduation and "n" for normal graduation. For example "ll"stands for a log-log plot. Default value is "nn".
Description
plot2d
plots a set of 2D curves. Piecewise linear
plotting is used.
By default, successive plots are superposed. To clear the previous
plot, use clf()
.
See the meaning of the parameters above for a complete description.
Enter the command plot2d()
to see a demo.
Other high level plot2d function exists:
Examples
//simple plot x=[0:0.1:2*%pi]'; plot2d(sin(x)) clf() plot2d(x,sin(x)) //multiple plot clf() plot2d(x,[sin(x) sin(2*x) sin(3*x)]) // multiple plot giving the dimensions of the frame // old syntax and new syntax clf() plot2d(x,[sin(x) sin(2*x) sin(3*x)],1:3,"011","",[0,0,6,0.5]) clf() plot2d(x,[sin(x) sin(2*x) sin(3*x)],rect=[0,0,6,0.5]) //multiple plot with captions and given tics // old syntax and new syntax clf() plot2d(x,[sin(x) sin(2*x) sin(3*x)],.. [1,2,3],"111","L1@L2@L3",[0,-2,2*%pi,2],[2,10,2,10]); clf() plot2d(x,[sin(x) sin(2*x) sin(3*x)],.. [1,2,3],leg="L1@L2@L3",nax=[2,10,2,10],rect=[0,-2,2*%pi,2]) // isoview clf() plot2d(x,sin(x),1,"041") // scale clf() plot2d(x,sin(x),1,"061") // auto scaling with previous plots clf() plot2d(x,sin(x),1) plot2d(x,2*sin(x),2) plot2d(2*x,cos(x),3) // axis on the right clf() plot2d(x,sin(x),1,"183","sin(x)") // centered axis clf() plot2d(x,sin(x),1,"184","sin(x)") // axis centered at (0,0) clf() plot2d(x-4,sin(x),1,"185","sin(x)")
See Also
Authors
J.Ph.C.
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