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Marker         Symbol         Description          Marker       Symbol            Description


                       "<"                          triangle_left         "h"                           hexagon1


                       ">"                         triangle_right         "H"                           hexagon2


                       "1"                           tri_down             "+"                              plus


                       "2"                            tri_up              "x"                               X


                       "3"                            tri_left            "x"                            x (filled)


                       "4"                           tri_right            "D"                           diamond


                 We can either use character codes or the colour names as values to the parameter color in the plot().

                                             Character                           Colour
                                                'b'                                blue
                                                "x"                               green

                                                "r"                                red
                                                "c"                               Cyan

                                                "m"                             Magenta
                                                "y"                               Yellow
                                                "k"                               Black
                                                "w"                               White


                 Linewidth and Line Style
                 The linewidth and linestyle property can be used to change the width and the style of the line chart. Linewidth is
                 specified in pixels. The default line width is 1 pixel showing a thin line. Thus, a number greater than 1 will output
                 a thicker line depending on the value provided. We can also set the line style of a line chart using the linestyle
                 parameter. It can take a string such as "solid", "dotted", "dashed" or "dashdot".
                 Let us now make some graphs:
                 Plotting a Line chart

                    • Single line chart

                    [1]:  import matplotlib.pyplot as plt
                          city=['Delhi', 'Mumbai', 'Chennai', 'Kolkata' ]
                          temp=[35,21,40,22]
                          plt.xlabel('Metro Cities')
                          plt.ylabel('Temp in Celsius')
                          plt.xlabel('Metro Cities' )
                          plt. title ('Temprature Study of the Day')
                          plt.plot(city, temp, marker='*', markersize=10, color='red', linewidth=2,
                          linestyle='dashdot' )
                          plt. show()


                                                                                    Advance Python (Practical)  459
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