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38 lines
1.4 KiB
38 lines
1.4 KiB
# Copyright(c) 2007-2010 by Lorenzo Gil Sanchez <lorenzo.gil.sanchez@gmail.com>
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#
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# This file is part of PyCha.
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#
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# PyCha is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# PyCha is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with PyCha. If not, see <http://www.gnu.org/licenses/>.
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import math
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from pycha.line import LineChart
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class ScatterplotChart(LineChart):
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def _renderChart(self, cx):
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"""Renders a scatterplot"""
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def drawSymbol(point, size):
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ox = point.x * self.layout.chart.w + self.layout.chart.x
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oy = point.y * self.layout.chart.h + self.layout.chart.y
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cx.arc(ox, oy, size, 0.0, 2 * math.pi)
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cx.fill()
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for key in self._getDatasetsKeys():
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cx.set_source_rgb(*self.colorScheme[key])
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for point in self.points:
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if point.name == key:
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drawSymbol(point, self.options.stroke.width)
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