ismember cell array of string and double vector

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gianluca mattei 2016-6-10

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https://ww2.mathworks.cn/matlabcentral/answers/289236-ismember-cell-array-of-string-and-double-vector

回答： gianluca mattei 2016-6-10

采纳的回答： Guillaume

Hi all, I have one cell array

list_1={'34172','36582','482','52792'}

and a double vector

vector_1=[21312,782,482,132]

how to know which element of cell array is present in vector_1 and viceversa?

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Guillaume 2016-6-10

编辑：Guillaume 2016-6-10

Is vector_1 equal to ['21312','782','482','132'] (which is simply the string '21312782482132', or equal to [21312, 782, 282, 132] (with no quotes), a vector of numbers?

The two are very different.

And is vector_1 a cell array (as per the title of your question) or a matrix (as per your example)?

gianluca mattei 2016-6-10

I have edited the question: vector_1 is a simple double vector meanwhile list_1 is a cell array

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Answer 1

Guillaume 2016-6-10

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/289236-ismember-cell-array-of-string-and-double-vector#answer_225108

编辑：Guillaume 2016-6-10

在 MATLAB Online 中打开

See my comments to your question, the example you provide does not match the title of your question. Assuming:

list_1 = {'34172', '36582', '482', '52792'};
vector_1 = [21312, 782, 282, 132];

You need to convert the type of one to the type of the other in order to compare them. So either convert the cell array of strings into a vector of number

list_1_as_numbers = str2double(list_1);
ismember(list1_as_numbers, vector_1)

or convert the numbers to string:

vector_1_as_string = sprintfc('%d', vector_1); %warning: sprintfc is not officially supported
%officially supported version is:
%vector_1_as_string = arrayfun(@(n) sprintf('%d', n), vector_1, 'UniformOutput', false);
ismember(list1, vector1_as_string)