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#!/usr/bin/env python
import sys
from math import log
from PyQt4 import Qt
from PyQt4.Qwt3D import Function, RGBA, SurfacePlot, BOX, X1, Y1, Z1
class Rosenbrock(Function):
def __init__(self, *args):
Function.__init__(self, *args)
# __init__()
def __call__(self, x, y):
return log((1-x)*(1-x) + 100*(y-x*x)*(y-x*x)) / 8
# __call__()
# class Rosenbrock
class Plot(SurfacePlot):
def __init__(self, *args):
SurfacePlot.__init__(self, *args)
self.setTitle('A Simple SurfacePlot Demonstration');
self.setBackgroundColor(RGBA(1.0, 1.0, 0.6))
rosenbrock = Rosenbrock(self)
rosenbrock.setMesh(41, 31)
rosenbrock.setDomain(-1.73, 1.5, -1.5, 1.5)
rosenbrock.setMinZ(-10)
rosenbrock.create()
self.setRotation(30, 0, 15)
self.setScale(1, 1, 1)
self.setShift(0.15, 0, 0)
self.setZoom(0.9)
axes = self.coordinates().axes # alias
for axis in axes:
axis.setMajors(7)
axis.setMinors(4)
axes[X1].setLabelString('x-axis')
axes[Y1].setLabelString('y-axis')
axes[Z1].setLabelString('z-axis')
self.setCoordinateStyle(BOX);
self.updateData();
self.updateGL();
# __init__()
# class Plot
def make():
demo = Plot()
demo.show()
# Matrox cards on Linux work better with a resize() after show()
demo.resize(600, 400)
return demo
# make()
def main(args):
app = Qt.QApplication(args)
demo = make()
#app.setMainWidget(demo)
sys.exit(app.exec_())
# main()
# Admire
if __name__ == '__main__':
main(sys.argv)
# Local Variables: ***
# mode: python ***
# End: ***
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