def draw(self, style, size, output, labels=None):
args = []
colors = []
for dataset in self.datasets:
if isinstance(dataset, ChartData):
args.append(dataset.data)
colors.append(dataset.color)
else:
args.append(dataset)
colors.append('black')
# Default for X axis labels (numbered 1..n)
if not labels:
labels = [str(i) for i in range(1, len(args[0]) + 1)]
# set colors for the data sets
if colors:
self.option(set_color=[int(Color(c)) for c in colors])
# pass options to gdchart and render the chart
gdchart.option(**self.options)
# limit label length in order to workaround bugs in gdchart
labels = [x[:32] for x in labels]
gdchart.chart(*((style, size, output, labels) + tuple(args)))
def draw(self, style, size, output, labels=None):
args = []
colors = []
for dataset in self.datasets:
if isinstance(dataset, ChartData):
args.append(dataset.data)
colors.append(dataset.color)
else:
args.append(dataset)
colors.append('black')
# Default for X axis labels (numbered 1..n)
if not labels:
labels = [str(i) for i in range(1, len(args[0])+1)]
# set colors for the data sets
if colors:
self.option(set_color=[int(Color(c)) for c in colors])
# pass options to gdchart and render the chart
gdchart.option(**self.options)
# limit label length in order to workaround bugs in gdchart
labels = [x[:32] for x in labels]
gdchart.chart(*((style, size, output, labels) + tuple(args)))
def draw(self):
"""Erstellt Chart als GIF. Gibt das GIF als string zurück."""
# Put options into effect.
gdchart.option(*(), **self.options)
data = cStringIO.StringIO()
args = (gdchart.GDC_3DBAR, self.size,
data,
self.names,
self.frequencies)
gdchart.chart(*args)
return data.getvalue()
class Chart:
""" Wrapper for "gdchart".
All GDC* constants are available as class attributes.
"""
DEFAULTS = gdchart.option()
def __init__(self):
# Get a copy of the default options
self.options = self.DEFAULTS.copy()
self.datasets = []
self.option(
bg_color=0xffffff,
line_color=0x000000,
)
def addData(self, data):
self.datasets.append(data)
def option(self, **args):
# Save option values in the object's dictionary.
self.options.update(args)
def draw(self, style, size, output, labels=None):
args = []
colors = []
for dataset in self.datasets:
if isinstance(dataset, ChartData):
args.append(dataset.data)
colors.append(dataset.color)
else:
args.append(dataset)
colors.append('black')
# Default for X axis labels (numbered 1..n)
if not labels:
labels = [str(i) for i in range(1, len(args[0]) + 1)]
# set colors for the data sets
if colors:
self.option(set_color=[int(Color(c)) for c in colors])
# pass options to gdchart and render the chart
gdchart.option(**self.options)
# limit label length in order to workaround bugs in gdchart
labels = [x[:32] for x in labels]
gdchart.chart(*((style, size, output, labels) + tuple(args)))
def __init__(self,
title=None,
xtitle=None,
ytitle=None,
names=[],
frequencies=[]):
logging.debug("Chart: t: %s x: %s y: %s names: %s freqs: %s" %
(title,
xtitle,
ytitle,
names,
frequencies))
# Get a copy of the default options
self.options = gdchart.option().copy()
self.size = (400, 500)
self.option(set_color=(0x54A3DB, 0x307BAF))
self.option(bg_color=0xFFFFFF, plot_color=0x0000cd, line_color=0x000000)
self.option(title=title, xtitle=xtitle, ytitle=ytitle)
self.names = names
self.frequencies = frequencies
