See this:
==========================================================
In [5]: Dx = numpy.matrix('1 0 0; 0 0.5 -0.5; 0 -0.5 1.5')
In [6]: Dx
Out[6]:
matrix([[ 1. , 0. , 0. ],
[ 0. , 0.5, -0.5],
[ 0. , -0.5, 1.5]])
==========================================================
Ok... So now test = 33 and instead of the value 1.5 I want to use the
value of "test" and put it directly into the matrix (or array):
==========================================================
In [7]: test=33
In [8]: Dx = numpy.matrix('1 0 0; 0 0.5 -0.5; 0 -0.5 test')
---------------------------------------------------------------------------
NameError Traceback (most recent call last)
/home/user/something/<ipython-input-8-5a43575649e1> in <module>()
----> 1 Dx = numpy.matrix('1 0 0; 0 0.5 -0.5; 0 -0.5 test')
/usr/lib/python2.7/dist-packages/numpy/matrixlib/defmatrix.pyc in
__new__(subtype, data, dtype, copy)
252
253 if isinstance(data, str):
--> 254 data = _convert_from_string(data)
255
256 # now convert data to an array
...... etc...
==========================================================
So obviously it doesn't understand that I want this:
==========================================================
In [21]: Dx[2,2]=test
In [22]: Dx
Out[22]:
matrix([[ 1. , 0. , 0. ],
[ 0. , 33. , -0.5],
[ 0. , -0.5, 33. ]])
==========================================================
Without having to manually change all the individual places using my
variables (test is actually many variables, not just one but I think you
should understand the problem now).
How to initialize my array directly using variables ?
It could also be that I wanted:
test11 = 1
test12 = 1.5
test13 = 2
test21 = 0
test22 = 5
Dx = numpy.matrix('test11 test12 test13; test21 test22 -0.5; 0 -0.5 1.5')
Etc... for many variables...
Appreciate ANY help, thank you very much!
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