39 lines
1.3 KiB
Python
39 lines
1.3 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# 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.
|
|
#
|
|
import coord
|
|
import math
|
|
import pychart_util
|
|
|
|
class T(coord.T):
|
|
def get_canvas_pos(self, size, val, min, max2):
|
|
return size * (val - min) / max(float(max2 - min),0.01)
|
|
|
|
def get_tics(self, min, max, interval):
|
|
v = []
|
|
x = min
|
|
while x <= max:
|
|
v.append(x)
|
|
x += interval
|
|
return v
|
|
def get_min_max(self, dmin, dmax, interval):
|
|
if not interval:
|
|
if dmax == dmin:
|
|
interval = 10
|
|
else:
|
|
interval = 10 ** (float(int(math.log(dmax-dmin)/math.log(10))))
|
|
dmin = min(dmin, pychart_util.round_down(dmin, interval))
|
|
dmax = max(dmax, pychart_util.round_up(dmax, interval) + interval/2.0)
|
|
return dmin, dmax, interval
|