fplot('tanh',[-2 2])
fplot('function',limits)fplot('fstring',limits)fplot(...,'marker')fplot(...,'marker',tol)[x,y] = fplot(...)
fplot('function',limits) plots the function specified by function between the limits specified by the limits vector. function can be any MATLAB function name, including the name of a user-created function. limits can be a two-element vector specifying the x-axis limits for the plot, or a four-element vector specifying both x- and y-axis limits, [xmin xmax ymin ymax].
fplot('fstring',limits) evaluates and plots fstring, a function string that includes a variable x, such as 'sin(x)' or 'diric(x,10)'.
fplot(...,'marker') specifies the marker type for the plot. By default, fplot uses only a solid line. Valid marker strings are '-+', '-x', '-o', and '-*'.
fplot(...,'marker',tol) specifies the relative error tolerance tol. By default, tol is 2e-3.
[x,y] = fplot(...) returns the abscissae and ordinates for the function in the column vectors x and y. No plot is drawn on the screen. The function can then be plotted with plot(x,y).
fplot('tanh',[-2 2])
is graphed with the statement:function y = myfun(x)y(:,1) = 200*sin(x(:))./x(:);y(:,2) = x(:).^2;
fplot('myfun',[-20 20])
feval,plot
(c) Copyright 1994 by The MathWorks, Inc.