What does it mean by *+ operation

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John ZHANG
John ZHANG 2016-6-6
评论： John ZHANG 2016-6-6
I found someone using *+ in their code, but I don't know what this operation does. For example,
ones(3,3)*+ones(3,3)
yields a 3*3 matrix whose entries are all 3.

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回答（1 个）

Steven Lord
Steven Lord 2016-6-6
In this context + is the unary plus. See the help for uplus. Once MATLAB has applied uplus to the second array, it then performs normal matrix multiplication.
  2 个评论
John ZHANG
John ZHANG 2016-6-6
I have checked the help document but I still don't understand what it says. For example, how does the uplus change the value of ones(3,3)?
John ZHANG
John ZHANG 2016-6-6
Is there any difference if I use the normal matrix multiplication directly?

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