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- plot2d_old_version
- 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 This page might be outdated.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
Matplot
2D plot of a matrix using colors
Calling Sequence
Matplot(a,[strf,rect,nax]) Matplot(a,<opt_args>)
Arguments
- a
real matrix of size (n1,n2).
- <opt_args>
This represents a sequence of statements
key1=value1, key2=value2
,... wherekey1
,key2,...
can be one of the following:- rect
sets the bounds of the plot. If this key is given and neither
frameflag
norstrf
is given then they
character ofstrf
is supposed to be7
. See below for value.- nax
sets the grids definition. If this key is given and neither
axesflag
norstrf
is given then thez
character ofstrf
is supposed to be1
. See below for value.- frameflag
specifies how the frame of the plot is computed. The value is an integer ranging from 0 to 8. It corresponds to the
y
character ofstrf
. See below.- axesflag
specifies what kind of axes are drawn around the plot. The value is an integer ranging from 0 to 5. It corresponds to the
z
character ofstrf
. See below.
- strf
is a string of length 3
"xyz"
.- default
The default is
"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, with the box disabled.
- z=5
axes are drawn centred in the middle of the frame box, with the box enabled.
- 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.
Description
The entries of matrix int(a)
are used as colormap entries
in the current colormap.
The color associated to a(i,j)
is
used do draw a small square of size 1 with center at location
(x=j,y=(n1-i+1))
.
If a matrix entry is outside the colormap, the corresponding rectangle is not displayed.
Enter the command Matplot()
to see a demo.
See Also
- colormap — using colormaps
- plot2d — 2D plot
- Matplot1 — 2D plot of a matrix using colors
- Matplot_properties — description of the Matplot entities properties
Authors
J.Ph.C.
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