need function to save my data

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0 个投票

hi,

I have data is formatted as

*cluster1 2 3

cluster2 1 4 5

cluster3 6 7 10 8*

I would like to find way to save it in file, I know textscan work with such format but this function need equal number of columns in each row.

is there any other way to do that?

thanks

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Walter Roberson 2012-9-14

Try str2num(c2{1})

huda nawaf 2012-9-14

thanks when I do that , it still deal with 23 as string where when need x1{1}(1) will give me 23 not 2

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Answer 1

per isakson 2012-9-14

编辑：per isakson 2012-9-15

在 MATLAB Online 中打开

0 个投票

I assume that

you want to import data from a text file, which is defined by the three rows embraced by "*"
the "*" are traces of your effort to format the text

Since the rows have different formats textscan is not appropriate.

One way to read the file is to loop over the all rows and read one row at a time with the function

fgetl, Read line from file, removing newline characters

There is an example in the documentation

.

-- Working code [ R2012a, 2012-09-15 ] ---

    >> S = cssm()
    S = 
    1x3 struct array with fields:
        Cluster
        Items
    >> [S.Cluster]
    ans =
         1     2     3
    >> S(3).Items
    ans =
         6     7    10     8

where cssm.m is

    function S = cssm()
        fid = fopen('cssm.txt');
        cup = onCleanup( @() fclose( fid ) );
        S   = struct([]);
        str = fgetl( fid );
        while ischar( str )
            str = strtrim( str );
            str = strrep( str, 'cluster', '' );
            num = str2num( str );
            S(end+1).Cluster = num(1); %#ok<AGROW>
            S(end  ).Items   = num(2:end); 
            str = fgetl( fid );     
        end
    end

and where cssm.txt contains the tree rows

    cluster1 2 3
    cluster2 1 4 5
    cluster3 6 7 10 8

.

--- Alternate code ---

    >> S = cssm()
    S = 
    1x3 struct array with fields:
        RowHeader
        Items
    >> {S.RowHeader}
    ans = 
        'cluster1'    'cluster2'    'cluster3'
    >> S(3).Items
    ans =
         6     7    10     8

where cssm.m is

    function S = cssm()
        fid = fopen('cssm.txt');
        cup = onCleanup( @() fclose( fid ) );
        S   = struct([]);
        str = fgetl( fid );
        while ischar( str )
            [ tok, str ] = strtok( strtrim( str ) );
            S(end+1).RowHeader  = tok; %#ok<AGROW>
            S(end  ).Items      = str2num( str ); 
            str = fgetl( fid );     
        end
    end