/usr/share/pyshared/pychart/coord.py is in python-pychart 1.39-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
#
# Jockey is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
#
# Jockey is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
class T(object):
def get_canvas_pos(self, size, val, min, max):
"""
Compute the screen location at which a sample value would be drawn.
``size`` is the width or height of the chart, in points.
``val`` is the sample value.
``min`` and ``max`` are the minimum and maximum sample values that
are to be displayed over the length of ``size``.
For example, suppose the width of a chart is 200 points and the
minimum and maximum X values in the sample data are 100 and 150
respectively. When Pychart wants to draw a sample point at the X
value of 120, it will call
area.T.x_coord.get_canvas_pos(size = 200, val = 120, min = 100, max = 150).
"""
raise Exception
def get_tics(self, min, max, interval):
"""Generate the list of places for drawing tick marks."""
raise Exception
def get_min_max(self, min, max, interval):
"""Compute the min/max values to be displayed in the chart.
Parameters ``min`` and ``max`` are the minimum and maximum values
of the sample data passed to the plots. Parameter ``interval`` is
the value of attribute area.T.x_grid_interval (or y_grid_interval).
It is None if these attributes are non-specified.
This method must return tuple (dmin, dmax, dinterval).
dmin should be ``min`` rounded down to some good number.
dmax should be ``max`` rounded up to some good number.
dinterval should be ``interval`` if it is non-None. Otherwise, the
method must compute some good value.
"""
raise Exception
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