[Visualpython-users] Mouse (x,y) in a graph

[Bruce S. <bas...@un...>]

Here is a little program that plots a graph and displays (x,y) whenever the
left mouse button is down.

from visual.graph import *

oscillation = gdisplay(title='Test Plotting', xtitle='Time',
ytitle='Response')
funct1 = gcurve(color=color.cyan)
funct2 = gvbars(color=color.red, delta=0.8)
funct3 = gdots(color=color.yellow)

for t in arange(-30, 76, 1):
    funct1.plot(pos=(t, 5.0+5.0*cos(-0.2*t)*exp(0.015*t)) )
    funct2.plot(pos=(t, 2.0+5.0*cos(-0.1*t)*exp(0.015*t)) )
    funct3.plot(pos=(t, 5.0*cos(-0.03*t)*exp(0.015*t)) )

showxy = label(display=oscillation.display, yoffset=10, line=0, opacity=1,
visible=0)
while 1:
    rate(300)
    m = oscillation.display.mouse
    if m.button == 'left':
        showxy.pos = (m.pos.x,m.pos.y)
        showxy.text = '%d,%d' % (m.pos.x,m.pos.y)
        showxy.visible = 1
    else:
        showxy.visible = 0