Re: [Numpy-discussion] reshape 2D array into 3D

2017-07-10 Thread paul . carrico
"Question: Did you try to control the python & numpy versions by creating a virtualenv, or a conda env?" I've just downloaded (ana)conda, but I've to take care first that it does not substitute to current python release working for for other solvers thanks for the information's and the suppor

Re: [Numpy-discussion] reshape 2D array into 3D

2017-07-10 Thread paul . carrico
Thanks Nevertheless it does not work for me and I suspect the python/numpy releases :-( The server on which I'm working on is under Contos 7 that uses python 2.7 et numpy 1.7 from memory ; I tried to upgrade both of them (plus spyder) but it fails. I didn't want to impact the other solvers in

[Numpy-discussion] reshape 2D array into 3D

2017-07-10 Thread paul . carrico
Dear All I'm looking in a way to reshape a 2D matrix into a 3D one ; in my example I want to MOVE THE COLUMNS FROM THE 4TH TO THE 8TH IN THE 2ND PLANE (3rd dimension i guess) a = np.random.rand(5,8); print(a) I tried a = p.reshape(d, (2,5,4), ) but it is not what I'm expecting Nota : it

[Numpy-discussion] Reshape 2D array into 3D

2017-07-10 Thread paul . carrico
Dear All I'm looking in a way to reshape a 2D matrix into a 3D one ; in my example I want to MOVE THE COLUMNS FROM THE 4TH TO THE 8TH IN THE 2ND PLANE (3rd dimension i guess) a = np.random.rand(5,8); print(a) I tried a = p.reshape(d, (2,5,4), ) but it is not what I'm expecting Nota : it

[Numpy-discussion] Numpy arrays and slicing comprehension issue

2017-07-08 Thread paul . carrico
Hi Once again I need your help to understand one topic concerning slicing topic, or in other word I do not understand how it works in that particular (but common) case; I'm trying to reassign the 4 first values in an array: * If I use [:3] I'm expecting to have 4 values (index 0 to 3 i

Re: [Numpy-discussion] record data previous to Numpy use

2017-07-07 Thread paul . carrico
Hi (all) Ounce again I would like to thanks the community for the supports. I progressing in moving my code to Python .. In my mind some parts remains quite hugly (and burns me the eyes), but it works and I'll optimized it in the future ; so far I can work with the data in a single reading

Re: [Numpy-discussion] record data previous to Numpy use

2017-07-06 Thread paul . carrico
Thanks all for your advices Well many thing to look for, but it's obvious now that I've first to work on (better) strategy than the one I was thinking previously (i.e. load all the files and results in one step). It's is just a reflexion, but for huge files one solution might be to split/write

Re: [Numpy-discussion] record data previous to Numpy use

2017-07-06 Thread paul . carrico
Thanks Rober for your effort - I'll have a look on it ... the goal is be guide in how to proceed (and to understand), and not to have a "ready-made solution" ... but I appreciate honnestly :-) Paul Le 2017-07-06 11:51, Robert Kern a écrit : > On Thu, Jul 6, 2017 at 1:49 AM, wrote: >> >> D

Re: [Numpy-discussion] record data previous to Numpy use

2017-07-06 Thread paul . carrico
Dear All First of all thanks for the answers and the information's (I'll ding into it) and let me trying to add comments on what I want to : * My asci file mainly contains data (float and int) in a single column * (it is not always the case but I can easily manage it - as well I

Re: [Numpy-discussion] record data previous to Numpy use

2017-07-05 Thread paul . carrico
Hi Thanks for the answer: ascii file is an input format (and the only one I can deal with) HDF5 one might be an export one (it's one of the options) in order to speed up the post-processing stage Paul Le 2017-07-05 20:19, Thomas Caswell a écrit : > Are you tied to ASCII files? HDF5 (vi

[Numpy-discussion] record data previous to Numpy use

2017-07-05 Thread paul . carrico
Dear all I'm sorry if my question is too basic (not fully in relation to Numpy - while it is to build matrices and to work with Numpy afterward), but I'm spending a lot of time and effort to find a way to record data from an asci while, and reassign it into a matrix/array … with unsuccessfully!

Re: [Numpy-discussion] New python/numpy user

2017-07-04 Thread paul . carrico
Hi Brian First of all thanks for the answer, the explanations and the advices; as mentioned I've to think differently in order to code with efficiency. 1.: yes 'mat[:,0]=vect0' works fine and I understand why :-) 2. more generally, I've read some tutorials or presentations saying that Numpy i

[Numpy-discussion] New python/numpy user

2017-07-03 Thread paul . carrico
Dear All I'm a like matlab user (more specifically a Scilab one) for years, and because I've to deal with huge ascii files (with dozens of millions of lines), I decided to have a look to Python and Numpy, including vectorization topics. Obviously I've been influenced by my current feedbacks.