38 lines
1.3 KiB
Python
38 lines
1.3 KiB
Python
#
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# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
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#
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# Jockey is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2, or (at your option) any
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# later version.
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#
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# Jockey 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
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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import coord
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import math
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import pychart_util
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class T(coord.T):
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def get_canvas_pos(self, size, val, min, max2):
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return size * (val - min) / max(float(max2 - min),0.01)
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def get_tics(self, min, max, interval):
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v = []
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x = min
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while x <= max:
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v.append(x)
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x += interval
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return v
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def get_min_max(self, dmin, dmax, interval):
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if not interval:
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if dmax == dmin:
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interval = 10
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else:
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interval = 10 ** (float(int(math.log(dmax-dmin)/math.log(10))))
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dmin = min(dmin, pychart_util.round_down(dmin, interval))
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dmax = max(dmax, pychart_util.round_up(dmax, interval) + interval/2.0)
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return dmin, dmax, interval
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