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Sage nb code won't run now: vector.transpose() throws error.

asked 2015-04-01 11:13:24 +0200

terrachild gravatar image

updated 2015-04-01 12:00:25 +0200

tmonteil gravatar image

I'm trying to run some code I found that someone ran previously on Sage, but now it won't run. I'm new to Sage, so I'm not sure what to do.

This doesn't work now:

rand_transVector = vector((uniform(-10,10),uniform(-10,10),uniform(-10,10))).transpose()

It says:

AttributeError: 'Vector_symbolic_dense' object has no attribute 'transpose'

Could someone tell me what is wrong, or look at my project?


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answered 2015-04-01 12:10:43 +0200

Thomas gravatar image

updated 2015-04-01 12:11:12 +0200

It seems that a vector doesn't know if it is a row or a column vector. When you have a vector such as

 v = vector((uniform(-10,10),uniform(-10,10),uniform(-10,10)))





give it to you as row or column vectors. This must have been a change made to sage since your notebook was created. So to solve your problem, remove the transpose and relpace it with row or column if necessary.

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Asked: 2015-04-01 11:13:24 +0200

Seen: 1,123 times

Last updated: Apr 01 '15