plotutil.py

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# Copyright (C) 2013-2015 Kipp Cannon
# Copyright (C) 2015      Chad Hanna
#
# This program 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 of the License, or (at your
# option) any later version.
#
# This program 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.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#

## 
# @file
#
# A file that contains some generic plotting module code
#
# ### Review Status
#
##
# @package python.plotutil
#
# plotting utilities module
#
import math
import matplotlib
from matplotlib import figure
from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas
import numpy

def colour_from_instruments(instruments, colours = {
    "G1": numpy.array((0.0, 1.0, 1.0)),
    "H1": numpy.array((1.0, 0.0, 0.0)),
    "H2": numpy.array((0.0, 0.0, 1.0)),
    "L1": numpy.array((0.0, 0.8, 0.0)),
    "V1": numpy.array((1.0, 0.0, 1.0)),
    "E1": numpy.array((1.0, 0.0, 0.0)),
    "E2": numpy.array((0.0, 0.8, 0.0)),
    "E3": numpy.array((1.0, 0.0, 1.0)),
}):
    # mix colours additively
    colour = sum(map(colours.__getitem__, instruments))
    # desaturate
    colour += len(instruments) - 1
    # normalize
    return colour / colour.max()

golden_ratio = (1. + math.sqrt(5.)) / 2.