Plot (x, y, 'options'). This is the basic usage of plot. The following is the option parameter:
Color
'R' red 'M' pink 'G' green 'C' cyan 'B' blue 'W' white 'y' yellow 'K' blackLine Type'-'Solid line' -- 'dotted line': 'dotted line'-.'MARK Point'.' Use the point number to draw data points
'^' Draw data points by using a triangle '+' draw data points by '+'
'V' use the lower triangle to draw data points '*' Use the '*' sign to draw data points
'>' Use the right triangle to draw data points '.' Use the '.' sign to draw data points.
'<' Use the Left triangle to draw data points 's' or squar use a square to draw data points
'P' draw data points with five-pointed stars 'D' or diamond draw data points with diamond
'H' draw data points with hexagonal stars
For example, if plot (x, y, '+') is used, a '+' sign is drawn at each vertex, then you can set 16 different options for each of your 16 graphs (after a combination, there will be 16 options)
From: http://zhidao.baidu.com/question/98878401.html