User`s guide

12 Using the System Identification Tool GUI
• Four recently used sessions
• Plot options, such as line styles, zoom, grid, and w h ether the input is
plotted using zero-order hold or first-order hold between samples
You can only edit
idprefs.mat by chang ing preferences in the GUI.
The
idprefs.mat file is located in the same directory as startup.m,by
default. To change the location w here your preference s are saved, use the
midprefs command with the new path as the argument. For example:
midprefs('c:\matlab\toolbox\local\')
You can also type midpre fs and browse to the desired directory.
To restore the default preferences, select Options > Default preferences.
Modifying idlayout.m
Advanced users might want to customize the default plot options by editing
idlayout.m.
To customize
idlayout.m defaults, save a copy of idlayout.m to a folder in
your
matlabpath just above the ide nt directory level.
Caution Donotedittheoriginalfile to avoid overwriting the idlayout.m
defaults shipped with the product.
You can customize the following plot options in idlayout.m:
• Order in which colors are assigned to data and model icons
• Line colors on plots
• Axis limits and tick marks
• Plot options, set in the plot menus
• Font size
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