Basics of MATLAB and Beyond

MarkerEdgeColor = auto(and so on)In the example above we used get to get the handle of the line afterwe created it. If you know that you will want to modify an object’sproperties, you can assign its handle at creation time by using an outputvariable. Our example then becomes:h = plot(t,sin(t));set(h,’Marker’,’o’)This technique works for all of the plotting commands, surf, semilogx,image, and so on.Another way to set object properties is to call a creation functionwith a list of property/value pairs at the end of the argument list. Eachkind of graphical object (except the Root object) can be created bytyping a command with the same name as the object. For example, letus create a set of axes suitable for plotting range–depth data:axes(’Position’,[.1.5 .8 .08],’TickDir’,’out’,...’YDir’,’reverse’,’xax’,’top’)This call to the axes function has specified the position property so thatwe get a short, wide set of axes; the direction of the tick marks so thatthey stick out of the box instead of into it; the direction of the y-axisis reversed, and the location of the x-axis is on top. The capitalisationof the property names is not important. The name of a property neednot be spelled out in full: you can abbreviate it to the shortest uniquename. In the above call to axes, for example, the xax property is theXAxisLocation.If you are unsure of the allowed values for a property, you can get alist of them by typing set without actually setting a value. For example,suppose you know there is an Axes property called XAxisLocation butyou do not know whether to type ’above’, ’top’, or’up’ to get thex-axis drawn at the top. The solution is to type:>> set(gca,’XAxisLocation’)[ top | {bottom} ]The allowed values for the XAxisLocation property are top and bottom.Curly brackets are put around the default setting. If you type setc○ 2000 by CRC Press LLC