How do i get element array from find function?
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I know that the find function gives me an array with the location of elements. How do I convert those location indices into an array that displays the element instead?
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Image Analyst
2017 年 2 月 18 日
If you have a 1-D vector, it gives the indexes directly. If you have a 2-D matrix, it gives rows and columns,
[rows, columns] = find(yourArray = someValue);
I don't know what you mean by the element - is it the linear index, the row(s) and column(s), or the array element itself? If you're testing a range instead of equality, you can use the linear index instead of the rows and columns to get the values:
m = magic(5);
linearIndexes = find(m>=18)
result = m(linearIndexes)
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Stephen23
2017 年 2 月 18 日
編集済み: Stephen23
2017 年 2 月 18 日
@Anonymous Matrix: I (and other volunteers here) try to show beginners that they can also search for information in the documentation: the documentation has information on how MATLAB works, and you want information on how to use MATLAB... it is a match made in heaven! The more you practice searching for information in the documentation the more you will learn, and the better you will be at using MATLAB.
I don't expect beginners to know how to use MATLAB. I do encourage beginners to read the documentation: MATLAB has very readable documentation. Use it.
Star Strider
2017 年 2 月 18 日
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