119 lines
3.5 KiB
Python
119 lines
3.5 KiB
Python
# ===============================================================================
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# Copyright (C) 2010 Diego Duclos
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#
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# This file is part of eos.
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#
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# eos is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# eos is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more 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 eos. If not, see <http://www.gnu.org/licenses/>.
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# ===============================================================================
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import itertools
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class Graph(object):
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def __init__(self, fit, function, data=None):
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self.fit = fit
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self.data = {}
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if data is not None:
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for name, d in data.iteritems():
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self.setData(Data(name, d))
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self.function = function
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def clearData(self):
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self.data.clear()
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def setData(self, data):
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self.data[data.name] = data
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def getIterator(self):
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pointNames = []
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pointIterators = []
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for data in self.data.itervalues():
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pointNames.append(data.name)
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pointIterators.append(data)
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return self._iterator(pointNames, pointIterators)
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def _iterator(self, pointNames, pointIterators):
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for pointValues in itertools.product(*pointIterators):
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point = {}
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for i in xrange(len(pointValues)):
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point[pointNames[i]] = pointValues[i]
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yield point, self.function(point)
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class Data(object):
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def __init__(self, name, dataString, step=None):
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self.name = name
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self.step = step
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self.data = self.parseString(dataString)
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def parseString(self, dataString):
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if not isinstance(dataString, basestring):
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return (Constant(dataString),)
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dataList = []
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for data in dataString.split(";"):
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if isinstance(data, basestring) and "-" in data:
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# Dealing with a range
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dataList.append(Range(data, self.step))
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else:
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dataList.append(Constant(data))
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return dataList
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def __iter__(self):
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for data in self.data:
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for value in data:
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yield value
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def isConstant(self):
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return len(self.data) == 1 and self.data[0].isConstant()
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class Constant(object):
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def __init__(self, const):
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if isinstance(const, basestring):
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self.value = None if const == "" else float(const)
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else:
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self.value = const
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def __iter__(self):
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yield self.value
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def isConstant(self):
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return True
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class Range(object):
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def __init__(self, string, step):
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start, end = string.split("-")
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self.start = float(start)
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self.end = float(end)
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self.step = step
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def __iter__(self):
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current = start = self.start
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end = self.end
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step = self.step or (end - start) / 50.0
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i = 1
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while current < end:
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current = start + i * step
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i += 1
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yield current
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def isConstant(self):
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return False
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