Make a plot

In order to make a simple plot in the SDE one may use the predefined object "thePlot" actually an instance of PlotFrame class.
 import java.text.*;  
 x=linspace(0.0, 6.0*PI, 10000)  
 f={sin(it)}  
 thePlot.addFunction(new plotfunction(x,f as DoubleFunction))  
 thePlot.setTexfontsize(20)  
 thePlot.setFormatXAxis(new DecimalFormat("0.###"))  
 thePlot.setFormatYAxis(new DecimalFormat("0.######E0"))  
 thePlot.show()

To use a different PlotFrame, one just need to initialize it as a new variable, that is:
 anotherPlot = new PlotFrame()

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