Not exactly the same but shows the gist:
sage: m = matrix(5, 5, lambda i, j: binomial(i,j))
sage: m.plot()
On Thursday, November 27, 2014 9:08:30 PM UTC, projetmbc wrote:
>
> Hello.
>
> Is it possible to do the same thing as the following code in "pure" Sage
> coding ?
>
> *Christophe BAL*
> *Enseignant de mathématiques en Lycée*
> *et développeur Python amateur*
>
> *--**------**------**--- **CODE **---**------**------**--*
> *import matplotlib.pyplot as plt*
> *import numpy as np*
> *from sympy import binomial*
>
> *nmax = 200*
>
> *im = np.zeros((nmax+1, nmax+1, 3))*
>
> *for n in range(nmax):*
> * for k in range(n+1):*
> * if binomial(n, k) % 2 == 1:*
> * im[k, n] = (255, 255, 255)*
>
> *im = im.astype(np.uint8)*
>
> *plt.imshow(im)*
> *plt.axis('off')*
> *plt.show()*
>
>
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