converting array to single

Question

OLUBUKOLA ogunsola 2016-6-14

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/289857-converting-array-to-single

编辑： Walter Roberson 2016-6-15

i have this output:

output = dial ('1FUNDOG4YOU')
output =
       1     3     8     6     3     6     4     4     9     6     8
  (1 X 11) cell

but this is what i want

output :13863644968 
           (1X 1)

I've tried all sort of ridiculous stuff, str2num and the likes but nothing works . any idea on what to do to make the conversion happen? thanks

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Answer 1

Stephen23 2016-6-14

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https://ww2.mathworks.cn/matlabcentral/answers/289857-converting-array-to-single#answer_225489

编辑：Stephen23 2016-6-14

在 MATLAB Online 中打开

If the elements of the cell array are numeric scalars:

>> C = {1,3,8,6,3,6,4,4,9,6,8};
>> sprintf('%d',C{:})
ans = 13863644968

Or if they are strings:

>> C = {'1','3','8','6','3','6','4','4','9','6','8'};
>> sprintf('%s',C{:})
ans = 13863644968

Note that this string has size 1x11 (strings are not size 1x1 in MATLAB). If you need it to be stored in a 1x1 array, then you can put it inside a cell.

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Azzi Abdelmalek 2016-6-14

在 MATLAB Online 中打开

C = {1,3,8,6,3,6,4,4,9,6,8}
C=sprintf('%d',C{:})
C=uint64(str2num(C))

OLUBUKOLA ogunsola 2016-6-14

编辑：OLUBUKOLA ogunsola 2016-6-14

perfect ! thanks

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Answer 2

Walter Roberson 2016-6-14

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https://ww2.mathworks.cn/matlabcentral/answers/289857-converting-array-to-single#answer_225512

在 MATLAB Online 中打开

Be careful, str2num() will create double precision with only 53 bits of precision. If you need the full 64 bits of precision you will need a different calculation.

C = {1,3,8,6,3,6,4,4,9,6,8};
Cv = uint64([C{:}]);
output = sum( Cv .* (uint64(10).^uint64(length(Cv)-1:-1:0)), 'native' );

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OLUBUKOLA ogunsola 2016-6-15

problem with assert is it outputs an error , i don't want that i want output =0 . so i wrote the code this way

assert(isa(testStr,'alphanum'),'output=0.') but gets an error :

Error using dial (line 6) output=0

OLUBUKOLA ogunsola 2016-6-15

编辑：Walter Roberson 2016-6-15

在 MATLAB Online 中打开

this is the code i wrote :

function output = dial (testStr)
c = containers.Map({'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'}, ...
    [0,1,2,3,4,5,6,7,8,9,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,7,8,8,8,9,9,9,9]) ;
testOut = NaN(1,numel(testStr)) ;
x=all(isstrprop('testStr','alphanum'));
     if x==1      
for ii = 1:numel(testStr);
      testOut(ii) =  c(strcat(testStr(ii)));
      C=sprintf('%d',testOut(:));
      C=uint64(str2double(C));
end
   output=C ;
     else
      output=0;
     end 
end