How to obtain the absolute difference between elements in column?

2018 3 19
1 个回答
更新时间：2018 3 19
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Hi I have
a= 4 3 2 1
4 3 1 2
4 2 3 1
I want to know the absolute difference between elements for each of the columns which gives me
b= 0 0 -1 1
0 -1 2 -1
How am I going to do this?

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回答（1 个）

Walter Roberson
Walter Roberson 2018-3-19

0 个投票

b = diff(a);
would give the sample output you show.
However, your description asks for the absolute difference, and absolute difference is never negative, so your b does not match your question. To match your question you would abs() the diff()

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