Funzioni MATLAB: la funzione plot, la funzione surf
» help plot
PLOT Linear plot.
PLOT(X,Y) plots vector X versus vector Y.
PLOT(Y) plots the columns of Y versus their index. Various line types, plot symbols and colors may be obtained
with
PLOT(X,Y,S) where S is a character string made
..
» help surf
SURF 3-D colored surface.
SURF(X,Y,Z,C) plots the colored parametric surface defined
by four matrix arguments. The axis labels are determined
by the range of X, Y and Z, or by the current setting
of AXIS. The color scaling is determined by the range of C ,
SURF(Z)
and SURF(Z,C) use x = 1:n and y = 1:m
..
Esempio :
»
» x = linspace(0., 3.5,
7)
x = 0 0.5833
1.1667 1.7500 2.3333 2.9167 3.5000
» y = x .^2
-x
y = 0 -0.2431
0.1944 1.3125 3.1111 5.5903 8.7500
» z = sin(x)
z = 0 0.5508 0.9194 0.9840 0.7231 0.2230 -0.3508
» plot(x,y)
» hold
Current
plot held
» plot(x,z)
» print grafico.ps -f1
» help print
PRINT Print graph system; or save
graph to M-file.
PRINT <filename> saves the current Figure
window as PostScript or a printer specific format,
as specified by PRINTOPT or a command line option. If a filename is specified,
the output is written to the designated file,
PRINT <filename> -f<figure
handle> prints the specified Figure
..
| Alba C. Simoncelli | - MATLAB (nov. 2002) - pag.16 | Indice | Pag. Prec. | Pag. Seg. |
