mirror of https://github.com/Kozea/pygal.git
Python to generate nice looking SVG graph
http://pygal.org/
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107 lines
3.4 KiB
107 lines
3.4 KiB
# -*- coding: utf-8 -*- |
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# This file is part of pygal |
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# |
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# A python svg graph plotting library |
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# Copyright © 2012-2014 Kozea |
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# |
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# This library is free software: you can redistribute it and/or modify it under |
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# the terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 3 of the License, or (at your option) any |
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# later version. |
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# |
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# This library is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# 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 pygal. If not, see <http://www.gnu.org/licenses/>. |
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""" |
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XY Line graph |
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""" |
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from __future__ import division |
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from pygal.util import compute_scale, cached_property |
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from pygal.graph.line import Line |
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class XY(Line): |
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"""XY Line graph""" |
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_dual = True |
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@cached_property |
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def xvals(self): |
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return [val[0] |
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for serie in self.all_series |
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for val in serie.values |
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if val[0] is not None] |
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@cached_property |
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def yvals(self): |
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return [val[1] |
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for serie in self.series |
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for val in serie.values |
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if val[1] is not None] |
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def _has_data(self): |
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"""Check if there is any data""" |
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return sum( |
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map(len, map(lambda s: s.safe_values, self.series))) != 0 and any(( |
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sum(map(abs, self.xvals)) != 0, |
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sum(map(abs, self.yvals)) != 0)) |
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def _compute(self): |
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if self.xvals: |
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xmin = min(self.xvals) |
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xmax = max(self.xvals) |
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xrng = (xmax - xmin) |
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else: |
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xrng = None |
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if self.yvals: |
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ymin = min(self.yvals) |
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ymax = max(self.yvals) |
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if self.include_x_axis: |
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ymin = min(ymin or 0, 0) |
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ymax = max(ymax or 0, 0) |
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yrng = (ymax - ymin) |
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else: |
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yrng = None |
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for serie in self.all_series: |
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serie.points = serie.values |
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if self.interpolate and xrng: |
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vals = list(zip(*sorted( |
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filter(lambda t: None not in t, |
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serie.points), key=lambda x: x[0]))) |
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serie.interpolated = self._interpolate(vals[0], vals[1]) |
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if self.interpolate and xrng: |
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self.xvals = [val[0] |
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for serie in self.all_series |
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for val in serie.interpolated] |
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self.yvals = [val[1] |
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for serie in self.series |
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for val in serie.interpolated] |
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if self.xvals: |
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xmin = min(self.xvals) |
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xmax = max(self.xvals) |
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xrng = (xmax - xmin) |
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else: |
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xrng = None |
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if xrng: |
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self._box.xmin, self._box.xmax = xmin, xmax |
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if yrng: |
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self._box.ymin, self._box.ymax = ymin, ymax |
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x_pos = compute_scale( |
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self._box.xmin, self._box.xmax, self.logarithmic, self.order_min) |
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y_pos = compute_scale( |
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self._box.ymin, self._box.ymax, self.logarithmic, self.order_min) |
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self._x_labels = list(zip(map(self._format, x_pos), x_pos)) |
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self._y_labels = list(zip(map(self._format, y_pos), y_pos))
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