ARROW Draw a line with an arrowhead. ARROW(Start,Stop) draws a line with an arrow from Start to Stop (points should be vectors of length 2 or 3, or matrices with 2 or 3 columns), and returns the graphics handle of the arrow(s). ARROW uses the mouse (click-drag) to create an arrow. ARROW DEMO & ARROW DEMO2 show 3-D & 2-D demos of the capabilities of ARROW. ARROW may be called with a normal argument list or a property-based list. ARROW(Start,Stop,Length,BaseAngle,TipAngle,Width,Page,CrossDir) is the full normal argument list, where all but the Start and Stop points are optional. If you need to specify a later argument (e.g., Page) but want default values of earlier ones (e.g., TipAngle), pass an empty matrix for the earlier ones (e.g., TipAngle=[]). ARROW('Property1',PropVal1,'Property2',PropVal2,...) creates arrows with the given properties, using default values for any unspecified or given as 'default' or NaN. Some properties used for line and patch objects are used in a modified fashion, others are passed directly to LINE, PATCH, or SET. For a detailed properties explanation, call ARROW PROPERTIES. Start The starting points. B Stop The end points. /|\ ^ Length Length of the arrowhead in pixels. /|||\ | BaseAngle Base angle in degrees (ADE). //|||\\ L| TipAngle Tip angle in degrees (ABC). ///|||\\\ e| Width Width of the base in pixels. ////|||\\\\ n| Page Use hardcopy proportions. /////|D|\\\\\ g| CrossDir Vector || to arrowhead plane. //// ||| \\\\ t| NormalDir Vector out of arrowhead plane. /// ||| \\\ h| Ends Which end has an arrowhead. //<----->|| \\ | ObjectHandles Vector of handles to update. / base ||| \ V E angle||<-------->C ARROW(H,'Prop1',PropVal1,...), where H is a |||tipangle vector of handles to previously-created arrows ||| and/or line objects, will update the previously- ||| created arrows according to the current view -->|A|<-- width and any specified properties, and will convert two-point line objects to corresponding arrows. ARROW(H) will update the arrows if the current view has changed. Root, figure, or axes handles included in H are replaced by all descendant Arrow objects. A property list can follow any specified normal argument list, e.g., ARROW([1 2 3],[0 0 0],36,'BaseAngle',60) creates an arrow from (1,2,3) to the origin, with an arrowhead of length 36 pixels and 60-degree base angle. The basic arguments or properties can generally be vectorized to create multiple arrows with the same call. This is done by passing a property with one row per arrow, or, if all arrows are to have the same property value, just one row may be specified. You may want to execute AXIS(AXIS) before calling ARROW so it doesn't change the axes on you; ARROW determines the sizes of arrow components BEFORE the arrow is plotted, so if ARROW changes axis limits, arrows may be malformed. This version of ARROW uses features of MATLAB 5 and is incompatible with earlier MATLAB versions (ARROW for MATLAB 4.2c is available separately); some problems with perspective plots still exist.