Das deutsche Python-Forum

Code: Alles auswählen

			self.g = Gnuplot.Gnuplot()
			self.g.title('I(V)-Kennlinie')
			self.g.xlabel('Voltage (V)')
			self.g.ylabel('Current (A)')
			self.g('set style data linespoints')
			self.data = list()

Code: Alles auswählen

						self.data.append([float(self.volt2),float(self.current2)])
						self.g.plot(self.data)

Code: Alles auswählen

import Tkinter as tk

def plot(canvas, xvalues, yvalues):
    """plot graph and axes"""
    
    #some transformation values, so that graph fits into canvas:
    height = canvas.winfo_reqheight()
    width = canvas.winfo_reqwidth()

    scale_x = float(width) / (max(xvalues) - min(xvalues)) 
    scale_y = float(height) /(max(yvalues) - min(yvalues))

    move_x = - min(xvalues) * scale_x
    move_y = min(yvalues) * scale_y

    #plot axes:
    canvas.create_line(0, height + move_y, width, height + move_y)
    canvas.create_line(move_x, 0, move_x, height)

    #plot graph:
    for i in range(len(xvalues) - 1):
        punkt1 = (scale_x * xvalues[i] + move_x,
                  height - scale_y * yvalues[i] + move_y)
        punkt2 = (scale_x * xvalues[i+1] + move_x,
                  height - scale_y * yvalues[i+1] + move_y)

        canvas.create_line(punkt1[0], punkt1[1], punkt2[0], punkt2[1])



master = tk.Tk()

canvas = tk.Canvas(master, width=600, height=400)
canvas.pack()
plot(canvas, range(-10, 5), [(x**3) for x in range(-10, 5)])

tk.mainloop()