def _draw9Objects():
"""
Histogram
The following must be true:
len(bspec) = len(hist_data) + 1
"""
data = 2.25 * np.random.randn(50) + 3
heights, bins = np.histogram(data, bins=10)
hist_fixed_binsize = wxplot.PolyHistogram(heights, bins)
# Bins can also be arbitrary widths:
hist_variable_binsize = wxplot.PolyHistogram(
[2, 3, 4, 6, 3],
[18, 19, 22, 25, 26, 27],
fillcolour=wx.BLUE,
edgewidth=2,
edgecolour=wx.RED,
)
return wxplot.PlotGraphics(
[hist_fixed_binsize, hist_variable_binsize],
"Histogram with fixed binsize (left) and variable binsize (right)",
"Value",
"Count",
)
def OnDrawGraph(self, evt):
# simple line plot
if evt.GetId() == self.idLine:
# clear previous plot
self.pnlPlot.Clear()
x = np.linspace(0, 10, 500)
y = np.sin(x)
# create lines
line1 = wxplot.PolyLine(list(zip(x, np.sin(x))),
colour='red',
width=3,
style=wx.PENSTYLE_DOT_DASH)
line2 = wxplot.PolyLine(list(zip(x, -np.sin(x))),
colour='blue',
width=3,
style=wx.PENSTYLE_LONG_DASH)
# create a graphics
graphics = wxplot.PlotGraphics([line1, line2])
self.pnlPlot.Draw(graphics)
# histogram
elif evt.GetId() == self.idHist:
# clear previous plot
self.pnlPlot.Clear()
np.random.seed(0)
# fixed bins on the right
x1 = np.random.normal(400, 25, size=100)
h1, b1 = np.histogram(x1, bins=8)
hist1 = wxplot.PolyHistogram(h1, b1, fillcolour='red')
# variable bins on the left
x2 = np.random.normal(200, 25, size=100)
h2, b2 = np.histogram(
x2, bins=[100, 150, 180, 195, 205, 220, 250, 300])
hist2 = wxplot.PolyHistogram(h2, b2, fillcolour='blue')
# graph title and axis titles
graphics = wxplot.PlotGraphics(
[hist1, hist2],
'Histogram with variable binsize and fixed binsize',
'value', 'count')
self.pnlPlot.Draw(graphics)
def update(self, data, binspec):
self.Clear()
# other stuff uses numpy so I can too.
hist, edges = np.histogram(data, binspec)
bars = []
for n, (count, (low, high)) in enumerate(zip(hist, pairwise(edges))):
pts = [(low, 0), (low, count)]
ln = wxplot.PolyLine(
pts,
colour='blue',
width=3,
)
bars.append(ln)
# hack to get things to look like a "bar"...
pts2 = [(high, 0), (high, count)]
ln2 = wxplot.PolyLine(
pts2,
colour='blue',
width=3,
)
bars.append(ln2)
pts3 = [(low, count), (high, count)]
ln3 = wxplot.PolyLine(
pts3,
colour='blue',
width=3,
)
bars.append(ln3)
bars = [wxplot.PolyHistogram(hist, edges)]
plot = wxplot.PlotGraphics(
bars,
title=self.title,
xLabel=self.x_label,
yLabel=self.y_label,
)
self.XSpec = (0, 75)
self.EnableGrid = True
self.Draw(plot)
def drawHistogram(self, binData, histData, xTicks):
self.statGraph.Clear()
if not binData or not histData:
return
hist = wxplot.PolyHistogram(histData,
binData,
fillcolour=wx.BLUE,
edgecolour=wx.BLACK)
graphics = wxplot.PlotGraphics([hist],
title=self.selectedSingleVariable +
' histogram',
xLabel=self.selectedSingleVariable,
yLabel='count')
binSz = binData[1] - binData[0]
self.statGraph.setXticks(xTicks)
self.statGraph.Draw(
graphics, (binData[0] - 0.5 * binSz, binData[-1] + 0.5 * binSz),
(0, max(histData) * 1.05))
