convert char to double
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I really appreciate someone tell me how can I convert attached file to double.
Thanks in advance.
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Geoff Hayes
2020-4-8
Farshid - try using cellfun. It seems that the pn is a cell array with 38 elements and each element is a 8x1 char array. You haven't mentioned if each of the 8 characters is a single number or if all 8 combine to one (I'll assume the latter).
>> myData = load('example.mat');
>> numericData = cellfun(@(x)str2double(x'), myData.pn);
8 个评论
Farshid Daryabor
2020-4-8
Geoff Hayes
2020-4-8
I'm not sure what your question is? The data looks like
>> myData.pn{16}
ans =
66
99
00
11
99
65
29
That is how it is in your example.mat file. And the way I've coded this is so that this gets converted to 66990011996529. Are you expecting two numbers like 6901962 and 6901959?
Farshid Daryabor
2020-4-8
Geoff Hayes
2020-4-8
sigh. you can do something like
>> myData = load('example.mat');
>> numericData = cell2mat(cellfun(@(y)arrayfun(@(x)str2double(y(:,x)'),1:size(y,2))', myData.pn,'UniformOutput',false));
which works for this data set but I don't know if it will work for other sets. It uses cellfun to evaluate each cell in your myData.pn cell array. This evaluation uses arrayfun to evaluate each column in the char array - first taking the transpose of the column and then converting it to a double.
Farshid Daryabor
2020-4-9
Farshid Daryabor
2020-4-9
Geoff Hayes
2020-4-9
Farshid - it probably would have been easier if you had just asked for that format in the first place.
myData = load('example.mat');
myOutputData = nan(2,length(myData.pn));
for k = 1:length(myData.pn)
data = myData.pn{k};
myOutputData(1,k) = str2double(data(:,1)');
if size(data,2) == 2
myOutputData(2,k) = str2double(data(:,2)');
end
end
Farshid Daryabor
2020-4-9
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