How to multiply the column in matlab..?

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nani kalyan
nani kalyan 2015-5-21
回答： dpb 2015-5-21
Here i have attached the Excel file, in this i should calculate the column 2 and column 3 has to be multiply.so, for that i need some commands, please help me friends.
  2 个评论
Star Strider
Star Strider 2015-5-21
You have to describe what you want to do in more detail.
What specifically do you want to do with Column 2 and Column 3?
nani kalyan
nani kalyan 2015-5-21
i want to multiply the both columns.

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dpb
dpb 2015-5-21
Just use the : operator in the row position to collect all rows and a specific column number in the column position. NB: also that * is matrix multiplication so if you want the element-wise multiplication as would presume from the question you do, you have to use the "dot" operator .*
p=x(:,2).*x(:,3);
assuming the array read from Excel is in variable x
See the help page on Arithmetic Operators under the Language Fundamentals section in *Getting Started" section or
doc times % for direct link from command line for details

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