cellarray which contains different types of data

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sermet
sermet 2014-5-13
评论： sermet 2014-5-13
belows came from the results from codes in editor page;
txt1 =
'p4004'
[4005]
[4007]
[4009]
[4015]
[4020]
[4031]
[4037]
[4041]
[4151]
%txt1 10x1 1202 cell global
cc =
'p4004'
[4009]
[4005]
[4007]
%cc 4x1 482 cell global
% I need to use ismember or getname function for searching cc rows into txt1 rows like; [row,col] = ismember(txt1,cc) but it works same data type. Is there any solution I can apply or is there any way to transform txt1 and cc matrixes like that;
txt1=[{'p4004'},{'4005'},{'4007'},{'4009'},{'4015'},{'4020'},{'4031'},{'4037'},{'4041'},{'4151'}];
txt1=txt1(:);
cc=[{'p4004'},{'4009'},{'4005'},{'4007'}];
cc=cc(:);
%in here, ismember function(ismember(txt1,cc)) works properly.

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采纳的回答

Jos (10584)
Jos (10584) 2014-5-13
A = {'text', 1000, 2000, 'data'}
A_as_strings = cellfun(@num2str, A, 'un', 0)
and then you can use ismember ...

更多回答（2 个）

Benjamin Avants
Benjamin Avants 2014-5-13
If you're only trying to verify if the entries in cc appear in txt1, you can start by identifying which entries of txt1 are 'char' data type. The inverse of this would be the numerical entries, assuming there are only string and numerical entries.
ex.
strInd = false(size(txt1);
for ii = 1:numel(txt1)
strInd(ii) = ischar(txt{ii});
end
Then do the same for cc and use ismember on the two subsets.
test1 = ismember(cc{strInd2},txt1{strInd});
test2 = ismember(cc{~strInd2},txt1{~strInd});
If you need to know which entries in cc are not in txt1, you can extract them as follows:
temp = cc{strInd2};
textNotFound = temp{~test1};
temp = cc{~strInd2};
numNotFound = temp{~test2};
This may not be the best approach, but it should work. The for loops are not ideal, but I don't know a faster way.
Benjamin Avants
Benjamin Avants 2014-5-13
In response to your comments, here is one way to convert cell arrays with different data types to a single type.
You can use a loop with the num2str() function. If the function is passed a string it will return the same string. If it is passed a number, it will return that number as a string.
ex.
num2str('p4505')
ans = 'p4505'
num2str(4505)
and = '4505'
So you can convert your cell array as follows:
for ii = 1:numel(txt1)
txt1{ii} = num2str(txt1{ii});
end
Which will result in txt1 being entirely strings.
You can do the same for the other array and then use ismember to compare them.

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