4c08d6d022
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2095 fd906abe-77d9-0310-91a1-e0d9ade77398
104 lines
3.1 KiB
Python
104 lines
3.1 KiB
Python
#
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# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU 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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# This program 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Working transparently with the R statistics package.
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$Id$
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"""
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import os
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import rpy
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from rpy import r
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from zope.proxy import removeAllProxies
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from zope.traversing.browser import absoluteURL
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from cybertools.pyscript.plot import registerImage
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# not used (yet?):
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class RWrapper(object):
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def __init__(self, context):
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self.context = context
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def __getattr__(self, attr):
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value = getattr(self.context, attr)
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return removeAllProxies(value)
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def __call__(self, *args, **kw):
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value = self.context.__call__(*args, **kw)
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value = removeAllProxies(value)
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return RWrapper(value)
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rx = RWrapper(r)
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with_mode = RWrapper(rpy.with_mode)
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#as_py = RWrapper(rpy.as_py)
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def gdd(**kw):
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r.library('GDD')
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filename = os.tempnam(None, 'rplot')
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robj = r.GDD(filename, type='jpg', **kw)
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return filename + '.jpg', robj
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class RStat(object):
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def __init__(self, context, request):
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self.context = context
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self.request = request
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def graphics(self, **kw):
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request = self.request
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context = self.context
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fn, robj = gdd(**kw)
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key = registerImage(fn)
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return '%s/@@plot?image=%s.jpg' % (absoluteURL(context, request), key)
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def getDataFrame(self, data):
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""" Return an R data.frame.
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The ``data`` argument is a sequence of tuples
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(rowId, columnId, value). Elements with a columnId
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that is not present in all rows is omitted.
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"""
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def checkColumnId(rows, columnId):
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for row in rows.values():
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if columnId not in row:
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return False
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return True
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data = sorted(data)
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rows = {}
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for rowId, columnId, value in data:
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element = rows.setdefault(rowId, [])
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element.append(columnId)
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columnsToOmit = []
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for rowId, row in rows.items():
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for columnId in row:
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if not checkColumnId(rows, columnId):
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columnsToOmit.append(columnId)
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r.library('ltm')
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result = {}
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for rowId, columnId, value in data:
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if columnId not in columnsToOmit:
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result.setdefault(rowId, []).append(value)
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#print result
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matrix = rpy.with_mode(rpy.NO_CONVERSION, r.data_frame)(**result)
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return matrix
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