Naming variables in a loop [closed]

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bruno171092
49 ●4 ●5 ●12

I have this problem: Lets say i have an matrix A and use A.gram_schmidt() on it. then i get a matrix B whose rows are orthogonal. So what do i do now if i want use the vectors of the rows. How can i make them to variables practical? I tried this:

O, t = A.gram_schmidt() 
for i in range(n):
    wi = O.row(i)

But clearly this doesnt work, because sage doesnt identiy the "i" in "wi"...

Closed for the following reason the question is answered, right answer was accepted by bruno171092
close date 2015-12-23 16:20:25.216696

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answered 9 years ago

vdelecroix
7640 ●20 ●85 ●168 http://www.labri.fr/pe...

updated 9 years ago

It is not of very good practice to use variable names that depend on indices. And in practice this is hard to manipulate. You can alternatively do

sage: O, t =  A.gram_schmidt()
sage: w = O.rows()
sage: w[0]
-> the first row
sage: w[1]
-> the second row

But since you have the function O.row available I do not see why you need to make variables out of it.

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Closed for the following reason the question is answered, right answer was accepted by bruno171092 close date 2015-12-23 16:20:25.216696

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Closed for the following reason the question is answered, right answer was accepted by bruno171092
close date 2015-12-23 16:20:25.216696