Create New Graphs from Scratch and Customize Them

Graphics scripts are set up inside the Graph Box() command within a New Window() command.

New Window("title", <arguments>, Graph Box( named arguments,..., script));

The following arguments are named arguments for Graph Box():

Frame Size( horizontal, vertical ), // size in pixels

X Scale( xmin, xmax ), Y Scale( ymin, ymax ), // range of x and y axes

X Name( "x" ), Y Name( "y" ), // names for x and y axes

Suppress Axes // omit the axes

For example, Graph Box() accepts named arguments as shown in the following example, which creates a graph with a red background.

win = New Window( "Named arguments",

	Graph Box(

		Frame Size( 300, 300 ), // construct the graph box

		X Scale( 0, 190 ), // set the x-axis range

		Y Scale( 0, 190), // set the y-axis range

		X Name( "height" ),

		Y Name( "weight" ),

		<<Background Color( "Red" ) // set the background color

	)

);

Figure 12.7 Creating a Graph 

Alternatively, you can use the send << operator to send commands to the Graph Box instead of using the named arguments. This example also creates a graph with a red background.

win = New Window( "Messages",

	Graph Box(

		<<Frame Size( 300, 300 ),

		<<XAxis( 0, 190 ),

		<<YAxis( 0, 190 ),

		<<Background Color( "Red" )

	)

);

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