format for decimal numbers and no fractional

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Noe alvarado
Noe alvarado 2014-6-20
评论： Deepak Ramaswamy 2014-6-24
How i can obtain results in decimal format and not in fractional format?
I am using matlab for direct knematic, for example :
For a matrix I expect the following result: A12 =
[ 0, 0, 1, 0]
[ 1, 0, 0, 0]
[ 0, 1, 0, d2]
[ 0, 0, 0, 1]
but matlab show : A12 =
[0, -4967757600021511/81129638414606681695789005144064, 1, 0]
[ 1, 0, 0, 0]
[ 0, 1,4967757600021511/81129638414606681695789005144064, d2]
[ 0, 0, 0, 1]
where i expect a 0 i have a fractional number 4967757600021511/81129638414606681695789005144064

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the cyclist
the cyclist 2014-6-20
I suggest you read
doc format
for complete info on how MATLAB displays to the command window.
If you mean something else, please add more detail to your question, which is very imprecise.
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the cyclist
the cyclist 2014-6-22
I'm not sure what's happening here, and I don't have the Symbolic Math Toolbox, so I can't really test any ideas. I'm guessing that those fractions are the closest representation that MATLAB can get to the actual values, but I don't really know.
Deepak Ramaswamy
Deepak Ramaswamy 2014-6-24
That is the rational representation of the number as computed by the symbolic math toolbox. convert to float using
double(A12)

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