/usr/share/doc/python-qwt3d-doc/qt4examples/TestNumPy.py is in python-qwt3d-doc 0.1.7~cvs20090625-13.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | #!/usr/bin/env python
from numpy import *
import sys
from PyQt4.Qwt3D import *
from PyQt4.Qt import *
# enable all tracing options of the SIP generated bindings (requires -r option)
if False:
import sip
sip.settracemask(0x3f)
def matrix2d(nx, ny, minx, maxx, miny, maxy, function):
"""Return a data matrix to test the interface to the C++ member function
bool SurfacePlot::loadFromData(
double **, unsigned int, unsigned int, double, double, double, double);
"""
# columns
xs = multiply.outer(
minx + ((maxx-minx)/(nx-1))*arange(nx), ones(ny, float))
# rows
ys = multiply.outer(
ones((nx,), float), miny+((maxy-miny)/(ny-1))*arange(ny))
return function(xs, ys)
# matrix2d()
def matrix3d(nx, ny, minx, maxx, miny, maxy, function):
"""Return a data matrix to test the interface to the C++ member function
bool SurfacePlot::loadFromData(
Triple **, unsigned int, unsigned int, bool = false, bool = false);
"""
xyzs = zeros((nx, ny, 3), float)
# columns
xyzs[:,:,0] = multiply.outer(
minx + ((maxx-minx)/(nx-1))*arange(nx), ones(ny, float))
# rows
xyzs[:,:,1] = multiply.outer(
ones((nx,), float), miny+((maxy-miny)/(ny-1))*arange(ny))
# result
xyzs[:,:,2] = function(xyzs[:,:,0], xyzs[:,:,1])
return xyzs
# matrix3d()
def saddle(x, y):
return x*y
# saddle()
class Plot(SurfacePlot):
def __init__(self, *args):
SurfacePlot.__init__(self, *args)
# fonts
family = QCoreApplication.instance().font().family()
if 'Verdana' in QFontDatabase().families():
family = 'Verdana'
family = 'Courier'
self.coordinates().setLabelFont(family, 14)
self.coordinates().setNumberFont(family, 12)
self.setBackgroundColor(RGBA(1.0, 1.0, 0.6))
self.setRotation(30, 0, 15)
self.setScale(1.0, 1.0, 1.0)
nx, ny, minx, maxx, miny, maxy = 3, 5, -1.0, 1.0, -1.0, 1.0
if True:
zs = matrix2d(nx, ny, minx, maxx, miny, maxy, saddle)
print type(zs)
print zs
self.loadFromData(zs, minx, maxx, miny, maxy)
else:
xyzs = matrix3d(nx, ny, minx, maxx, miny, maxy, saddle)
print type(zs)
print xyzs
self.loadFromData(xyzs)
axes = self.coordinates().axes # alias
for axis, label in ((X1, "x"), (Y1, "y"), (Z1, "z")):
axes[axis].setAutoScale(False)
axes[axis].setMajors(5) # 6 major ticks
axes[axis].setMinors(3) # 2 minor ticks
axes[axis].setLabelString(label)
self.setCoordinateStyle(BOX)
self.coordinates().setGridLines(True, True)
self.coordinates().setLineSmooth(True)
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 = QApplication(args)
demo = make()
app.exec_()
# main()
# Admire
if __name__ == '__main__':
main(sys.argv)
# Local Variables: ***
# mode: python ***
# End: ***
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