MATLAB Graphics - A Guide to MATLAB for Beginners and Experienced Users - page 81

Here we would probably want the tick marks on the x axis located at mul-
tiples of π . This can be done with the set command applied to the properties
of the axes (and/or by selecting Edit : Axes Properties... in MATLAB 6,
or Tools : Axes Properties... in MATLAB 5.3). The command set is used
to change various properties of graphics. To apply it to “Axes”, it has to be
combined withthe command gca , which stands for “get current axes”. The
code

>> set(gca, 'XTick', (-2:2)*pi, 'XTickLabel',...
'-2pi|-pi|0|pi|2pi')
in combination with the code above gets the current axes, sets the ticks on
the x axis to go from − 2 π to 2 π in multiples of π , and then labels these ticks
the way one would want (rather than in decimal notation, which is ugly here).
TheresultisshowninFigure5-10.Incidentally,youmightwonderhowtolabel
the ticks as − 2 π , − π , etc., instead of -2pi , -pi , and so on. This is trickier but
you can do it by typing

1

0.8

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

-0.8

-1

-2pi -pi 0 pi 2pi

Figure5-10