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

asked 2015-04-01 04:13:24 -0500

terrachild gravatar image

updated 2015-04-01 05:00:25 -0500

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?

Thanks

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answered 2015-04-01 05:10:43 -0500

Thomas gravatar image

updated 2015-04-01 05:11:12 -0500

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)))

then

 v.row()

and

 v.column()

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 04:13:24 -0500

Seen: 261 times

Last updated: Apr 01 '15