def renderHistogram(values,
n_bins,
min_max=None,
title="Histogram",
color=Color.red,
show=True,
setThemeFn=setTheme):
""" values: a list or array of numeric values.
n_bins: the number of bins to use.
min_max: defaults to None, a tuple with the minimum and maximum value.
title: defaults to "Histogram", must be not None.
show: defaults to True, showing the histogram in a new window.
setThemeFn: defaults to setTheme, can be None or another function that takes a chart
as argument and sets rendering colors etc.
Returns a tuple of the JFreeChart instance and the window JFrame, if shown.
"""
hd = HistogramDataset()
hd.setType(HistogramType.RELATIVE_FREQUENCY)
print min_max
if min_max:
hd.addSeries(title, values, n_bins, min_max[0], min_max[1])
else:
hd.addSeries(title, values, n_bins)
chart = ChartFactory.createHistogram(title, "", "", hd,
PlotOrientation.VERTICAL, False,
False, False)
# Adjust series color
chart.getXYPlot().getRendererForDataset(hd).setSeriesPaint(0, color)
#
if setThemeFn:
setThemeFn(chart)
frame = None
if show:
frame = JFrame(title)
frame.getContentPane().add(ChartPanel(chart))
frame.pack()
frame.setVisible(True)
return chart, frame
def histogram(title, values):
dataset = HistogramDataset()
dataset.setType(HistogramType.RELATIVE_FREQUENCY)
#NBINS = int(maths.sqrt(len(values)))
#NBINS = int( (max(values)-min(values))/binW )
NBINS = 64
dataset.addSeries(title, values, NBINS)
chart = ChartFactory.createHistogram(title, "Distance (nm)",
"Relative Frequency", dataset,
PlotOrientation.VERTICAL, False, True,
False)
plot = chart.getXYPlot()
renderer = plot.getRenderer()
renderer.setSeriesPaint(0, Colour.BLUE)
painter = StandardXYBarPainter()
renderer.setBarPainter(painter)
frame = ChartFrame(title, chart)
frame.setSize(1200, 800)
frame.setLocationRelativeTo(None)
frame.setVisible(True)
from ij import IJ
from org.jfree.chart import ChartFactory, ChartPanel
from org.jfree.data.statistics import HistogramDataset, HistogramType
from javax.swing import JFrame
from java.awt import Color
imp = IJ.getImage()
pixels = imp.getProcessor().convertToFloat().getPixels()
# Data and parameter of the histogram
values = list(pixels)
n_bins = 256 # number of histogram bins
# Construct the histogram from the pixel data
hist = HistogramDataset()
hist.setType(HistogramType.RELATIVE_FREQUENCY)
hist.addSeries("my data", values, n_bins)
# Create a JFreeChart histogram
chart = ChartFactory.createHistogram("My histogram", "the bins", "counts", hist)
# Adjust series color
chart.getXYPlot().getRendererForDataset(hist).setSeriesPaint(0, Color.blue)
# Show the histogram in an interactive window
# where the right-click menu enables saving to PNG or SVG, and adjusting properties
frame = JFrame("Histogram window")
frame.getContentPane().add(ChartPanel(chart))
frame.pack()
frame.setVisible(True)
for i in range(0,iterations):
for i in range(0, len(dpz)):
if dpz[i] <= zbinright and dpz[i] >= zbinleft:
counter += 1
zhistovector.append(counter)
counter=0
zbinleft += zlength
zbinright += zlength
zaxis.append(zbinleft)
#--------------------Plot with jfreeChart environment-----------
values = xhistovector
bins = 20
dataset = HistogramDataset()
dataset.setType( HistogramType.FREQUENCY ) #other options: RELATIVE_FREQUENCY, SCALE_AREA_TO_1
dataset.addSeries( "Node count", values, bins)
chart = ChartFactory.createHistogram(
"Node Count Histogram",
"Bins",
"Node count",
dataset,
PlotOrientation.VERTICAL,
True, # showLegend
True, # toolTips
True,) # urls
# Save it as a PNG:
# A simple example showing how to draw histograms using JFreeChart # from Jython. This is based heavily on the pure Java example found # here: http://www.roseindia.net/tutorial/java/jfreechart/createhistogram.html from org.jfree.data.statistics import HistogramDataset from org.jfree.data.statistics import HistogramType from org.jfree.chart.plot import PlotOrientation from org.jfree.chart import ChartFactory from org.jfree.chart import ChartUtilities from java.io import File from java.awt import Dimension values = [ random.randint(0,50) for x in xrange(1,100) ] bins = 20 dataset = HistogramDataset() dataset.setType( HistogramType.RELATIVE_FREQUENCY ) dataset.addSeries( "Random Stuff", values, bins) chart = ChartFactory.createHistogram( "Example JFreeChart histogram", "This is the x axis", "This is the y axis", dataset, PlotOrientation.VERTICAL, True, # showLegend True, # toolTips True,) # urls # Save it as a PNG:
