How to compare 2 matrix ?
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I want to compare 2 matrix like this. for example first matrix I have 20 data and second matrix I have 100 data. can anyone help me ?
8 个评论
Adam
2017-10-27
Compare them in what way? It's not a uniquely defined operation!
Stephen23
2017-10-27
What exactly does "compare" mean? Here are some possible ways that they could be compared:
- compare numbers of pixels per digit in that screenshot.
- compare number of unique digits in each number.
- compare significant figures per number
- compare location within the digits of pi
- convert to English words, and compare using bag-of-words.
- compare hex values by how many 'F' there are.
- etc., etc.
Which do you want?
Muhammad Hafiz
2017-10-27
编辑：Muhammad Hafiz
2017-10-27
Adam
2017-10-27
It still isn't obvious what you intend to be done with the fact you have 20 elements on the left and 100 on the right. Your example just indexes equally into both sides. What do you expect to happen with the other 80 values in the right-hand column? what do you compare them against?
Muhammad Hafiz
2017-10-27
Adam
2017-10-27
both of which values? In your example you have 20 and 100. What does 'both' mean?
Muhammad Hafiz
2017-10-27
Adam
2017-10-27
You just keep repeating the same phrases though. If you want help you have to give details that allow people to help you. Just keep saying 'compare' is meaningless.
If you just want to find the minimum value across two different vectors then this is easy, but that isn't what I thought you wanted originally.
a = rand(20,1);
b = rand(100,1);
smallestVal = min( [a; b] )
will achieve that.
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2017-10-27
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