MATLAB by rudra pratap

• Graphics
MATLAB includes good tooh:; for visualization. Basic 2-D plots, fancy 3-D graphics
with lighting and colorrnaps, complete user control of the graphics objects through
Handle Gmphics tools for designing sophisticated graphics user interfaces, and animation
are now part of MATLAB. What is special about MATLAB's graphics
facility is its ease of use and expandability. Commands for most garden-variety
plotting are simple, easy to use, and intuitive. If you are not satisfied with what
you get, you can control and manipulate virtually everything in the graphics window.
This, however, requires an understanding of Handle Graphics, a system of
low-level functions to manipulate graphics objects. In this section, we take you
through the main features of MATLAB's graphics facilities.
6.1 Basic 2-D Plots
The most basic and perhaps most useful command for producing a 2-D plot is
plot ( xvalues, yvalues, 'style-option)
for oncline helP;
type:
'1ielp grCipli:2a ··· ·
where xvalues and yvalues are vectors containing the x- and y-coordinates of points
on the graph and the style-option is an optional argument that specifies the color,
the line style (e.g., solid, dashed, dotted), and the point-marker style (e.g., o, +,
*). All three style options can be specified together. The two vectors xvalues and
yvalues MUST have the same length. Unequal length of the two vectors is the most
common source of error in the plot commaml. The plot function also works with a
single-vector argument, in which case the elements of the vector are plotted against
row or column indices. Thus, for two column vectors x and y each of length n,
plot (x,y)
plot(x,y, '--')
plot (x)
plntR v vmRnR x with a solid line (the default line stylP.),
plots y versus x with a dashed line (more on this below) , and
plots the elements of x against their row index.