cell2mat error in reading in e+ (scientific notation)

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cgenes 2018-12-14

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https://ww2.mathworks.cn/matlabcentral/answers/435745-cell2mat-error-in-reading-in-e-scientific-notation

评论： Guillaume 2018-12-20

i'm really puzzled as this bit of code has worked well in the past - but now does not work properly, as it no longer converts the scientific notation of large numbers imported from the text file (i.e.5e+10), it gives numbers like 0.000001 instead, or just 0, when using cell2mat

    fid=fopen('base.vtk','r');   % open the file; be sure to add the error-checking code
    l=fgetl(fid);                % read first record
    while ~strcmp(l,'absorb_dens 1 1030301 double')       % loop until find the magic record
      l=fgetl(fid);
    end
    data=textscan(fid,'','collectoutput',1);  % read, convert cell to double array
    fid=fclose(fid);             % done with file, go on..
    
    data_1 = cell2mat(data); 

does it work for you? my file is quite big but can be downloaded here.

https://1drv.ms/u/s!AkN-CdDfFfoegTULroqt9IOU3qk4

it's a .vtk file - but when opend in matlab looks just like a .txt

thanks

Charlie

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cgenes 2018-12-20

bizarrely - in the console - these odd numbers are displayed - but actually in the variable the correct numbers are held

so my code above does actually work - the console representation of the data was confusing me

thanks

Guillaume 2018-12-20

I would still heed Walter's warning that the syntax you're using is undocumented and likely to break under unspecified conditions (and not work at all in future versions of matlab).

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