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<p>Thanks</p>
<p><br /></p>
<p>Nevertheless it does not work for me and I suspect the python/numpy releases :-(</p>
<p>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.</p>
<p>I didn't want to impact the other solvers installed on, so I stopped</p>
<p>Paul</p>
<p>a = np.arange(40).reshape(5, 8); print(a)<br />print("b =")<br />b = np.lib.stride_tricks.as_strided(a, (2, 5, 4), (16, 32, 4)); print(b)</p>
<p>[[ 0 1 2 3 4 5 6 7]<br /> [ 8 9 10 11 12 13 14 15]<br /> [16 17 18 19 20 21 22 23]<br /> [24 25 26 27 28 29 30 31]<br /> [32 33 34 35 36 37 38 39]]<br />b =<br />[[[ 0 4294967296 1 8589934592]<br /> [ 4 21474836480 5 25769803776]<br /> [ 8 38654705664 9 42949672960]<br /> [ 12 55834574848 13 60129542144]<br /> [ 16 73014444032 17 77309411328]]</p>
<p>[[ 2 12884901888 3 17179869184]<br /> [ 6 30064771072 7 34359738368]<br /> [ 10 47244640256 11 51539607552]<br /> [ 14 64424509440 15 68719476736]<br /> [ 18 81604378624 19 85899345920]]]</p>
<p><br /></p>
<p><br /></p>
<p><br /></p>
<p>Le 2017-07-10 15:16, eat a écrit :</p>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"><!-- html ignored --><!-- head ignored --><!-- meta ignored -->
<div dir="ltr">Hi,
<div class="gmail_extra"><br />
<div class="gmail_quote">On Mon, Jul 10, 2017 at 3:20 PM, <span><<a href="mailto:paul.carrico@free.fr">paul.carrico@free.fr</a>></span> wrote:<br />
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: #cccccc; border-left-style: solid; padding-left: 1ex;">
<div style="font-size: 10pt; font-family: Verdana,Geneva,sans-serif;">
<p>Dear All</p>
<p>I'm looking in a way to reshape a 2D matrix into a 3D one ; in my example I want to<span> </span><span><strong>move the columns from the 4th to the 8th in the 2nd plane</strong> </span>(3rd dimension i guess)</p>
<p>a = np.random.rand(5,8); print(a)</p>
<p>I tried</p>
<p>a = p.reshape(d, (2,5,4), ) but it is not what I'm expecting</p>
<p><br /></p>
<p>Nota : it looks like the following task (while I want to split it in 2 levels and not in 4), but I've not understood at all</p>
<p><a href="https://stackoverflow.com/questions/31686989/numpy-reshape-and-partition-2d-array-to-3d">https://stackoverflow.com/<wbr />questions/31686989/numpy-<wbr />reshape-and-partition-2d-<wbr />array-to-3d</a></p>
</div>
</blockquote>
<div>Is this what you are looking for: </div>
<div>
<div><span style="font-family: monospace, monospace;">import numpy as np</span></div>
<div><span style="font-family: monospace, monospace;"> </span></div>
<div><span style="font-family: monospace, monospace;">a= np.arange(40).reshape(5, 8)</span></div>
<div><span style="font-family: monospace, monospace;"> </span></div>
<div><span style="font-family: monospace, monospace;">a</span></div>
<div><span style="font-family: monospace, monospace;">Out[]: </span></div>
<div><span style="font-family: monospace, monospace;">array([[ 0, 1, 2, 3, 4, 5, 6, 7],</span></div>
<div><span style="font-family: monospace, monospace;"> [ 8, 9, 10, 11, 12, 13, 14, 15],</span></div>
<div><span style="font-family: monospace, monospace;"> [16, 17, 18, 19, 20, 21, 22, 23],</span></div>
<div><span style="font-family: monospace, monospace;"> [24, 25, 26, 27, 28, 29, 30, 31],</span></div>
<div><span style="font-family: monospace, monospace;"> [32, 33, 34, 35, 36, 37, 38, 39]])</span></div>
<div><span style="font-family: monospace, monospace;"> </span></div>
<div><span style="font-family: monospace, monospace;">np.lib.stride_tricks.as_strided(a, (2, 5, 4), (16, 32, 4))</span></div>
<div><span style="font-family: monospace, monospace;">Out[]: </span></div>
<div><span style="font-family: monospace, monospace;">array([[[ 0, 1, 2, 3],</span></div>
<div><span style="font-family: monospace, monospace;"> [ 8, 9, 10, 11],</span></div>
<div><span style="font-family: monospace, monospace;"> [16, 17, 18, 19],</span></div>
<div><span style="font-family: monospace, monospace;"> [24, 25, 26, 27],</span></div>
<div><span style="font-family: monospace, monospace;"> [32, 33, 34, 35]],</span></div>
<div><span style="font-family: monospace, monospace;"> </span></div>
<div><span style="font-family: monospace, monospace;"> [[ 4, 5, 6, 7],</span></div>
<div><span style="font-family: monospace, monospace;"> [12, 13, 14, 15],</span></div>
<div><span style="font-family: monospace, monospace;"> [20, 21, 22, 23],</span></div>
<div><span style="font-family: monospace, monospace;"> [28, 29, 30, 31],</span></div>
<div><span style="font-family: monospace, monospace;"> [36, 37, 38, 39]]])</span></div>
</div>
<div> </div>
<div>Regards,</div>
<div>-eat</div>
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: #cccccc; border-left-style: solid; padding-left: 1ex;">
<div style="font-size: 10pt; font-family: Verdana,Geneva,sans-serif;">
<p><br /></p>
<p>Thanks for your support</p>
<p><br /></p>
<p>Paul</p>
</div>
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