Multiplying two columns in a matrix

2019 1 30
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更新时间：2019 1 30
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Hi
I have loaded a text file into a matrix using dlmread function. this has 17 columns.. and now i want to add another column that is the multyplication of the 17th column and the 15th column. how do I do so?
thank you!!

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Walter Roberson
Walter Roberson 2019-1-30

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YourArray(:,end+1) = YourData(:,15) .* YourData(:,17);

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itzhak mal
itzhak mal 2019-1-30
When I used dlm read it went into a matrix you named here "YourArray" right? So what's the difference between the "YourData" and the matrix? How do I solve this?
Thank you so much!!
Walter Roberson
Walter Roberson 2019-1-30
TheNameOfYourArrayGoesRightHere(:,end+1) = TheNameOfYourArrayGoesRightHere(:,15) .* TheNameOfYourArrayGoesRightHere(:,17);

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