Warning: Attempt to write an unsupported data type to an ASCII file. I have a data which its class cell and its attributes global. I wanna save and write this data into text but I give this warning.

cellArray=  '4004    638905.26736      4552506.2389'

 % cellArray            1x1               188  cell      global    

startingFolder = 'C:\Program Files\MATLAB'

 if ~exist(startingFolder, 'dir')

    startingFolder = pwd

 end

defaultFileName = fullfile(startingFolder, '*.txt')

[baseFileName, folder] = uiputfile(defaultFileName, 'Select a file')

if baseFileName == 0

   return

   end

   fullFileName = fullfile(folder, baseFileName)

   save(fullFileName, 'cellArray',  '-ASCII')

Answer 1

[Walter Roberson]

save -ASCII files only support pure numeric elements. Cell arrays and strings are not pure numeric elements, and reading such a file back in with load -ASCII would not result in a cell array or string.

If you want to write a string to a file,

fid = fopen(fullFileName, 'wt');
fwrite(fid, cellArray);   %cellArray is really a string confusingly named
fclose(fid)

Unless, that is, there are characters with position numbers beyond 255 to be written; writing such strings takes more work.

[Abdulaziz Abutunis]

Hi Walter I have a raw data with number, text and blank cells. I was able to read them form an Excel file.as follow

[numData textData rawData]= xlsread('FileName.xlsx','SheetName');

then I want to write this to a text file as follow

fid = fopen(FileName.txt, 'wt');
fwrite(fid, rawData);  
fclose(fid)

However this did not work. I have MATLAB R2010a. The error was

??? Undefined function or variable 'FileName'.
Error in ==> Rotating_and_Curving_Foils at 153
fid = fopen(FileName.txt, 'wt');

[Walter Roberson]

fid = fopen('AppropriateFileNameGoesHere.txt', 'wt');