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how to solve an error ?

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pruth on 15 May 2018
Edited: pruth on 25 Sep 2019
hi, I have written a code for text input files. everything is working fine except last 3 lines of code!!! i am getting this error
///////////////////////// Error using cat Dimensions of matrices being concatenated are not consistent.
Error in cell2mat (line 83) m{n} = cat(1,c{:,n}); ////////////////////////////////////////////
what I just want to do is to get/convert the data from cell 'alldata' to simple array 'rawdata' using cell2mat I tried so much I don't know what is the problem. I have attached the files also. please help. so much frustrated.
% read all text file from folder
clear all
close all
initialdir = cd();
set(0, 'DefaultAxesFontSize',15)
list = dir('*.txt');
delimiter = '\t';
formatSpec = '%s%s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%*s%s%s%s%[^\n\r]';
alldata = [];
for file = 1:length(list)
fid = fopen(list(file).name);
dataArray = textscan(fid, formatSpec, 'Delimiter', delimiter, 'ReturnOnError', false);
%%Close the text file.
%%Convert the contents of columns containing numeric strings to numbers.
raw = repmat({''},length(dataArray{1}),length(dataArray)-1);
for col=1:length(dataArray)-1
raw(1:length(dataArray{col}),col) = dataArray{col};
raw(1,:) = [];
alldata = [alldata;raw];
rawdata(:,1) = datenum((alldata(:,1)),'yyyy-mm-dd') + datenum(alldata(:,2),'HH:MM') - datenum('00:00','HH:MM'); rawdata(:,2) = str2num(cell2mat(alldata(:,3)));
rawdata(:,3) = str2num(cell2mat(alldata(:,4)));
rawdata(:,4) = str2num(cell2mat(alldata(:,5)));

Accepted Answer

pruth on 15 May 2018
fixed it
rawdata(:,2) = str2double(alldata(:,3));
rawdata(:,3) = str2double(alldata(:,4));
rawdata(:,4) = str2double(alldata(:,5));

More Answers (1)

Jan on 15 May 2018
If you post the complete error message, the readers can know, which line is failing. I guess it is:
rawdata(:,2) = str2num(cell2mat(alldata(:,3)));
You have padded the raw data with empty string ''. Then cell2mat tries to create a CHAR matrix, but the rows or columns have inconsistent lengths. One solution can be to apply str2num directly on the cell array. Or better use the safer str2double. In addition you might want to pad the data with '0'.
Is creating a matrix from the single columns of dataArray really useful, if all you want to do is to split it up to columns afterwards again?
  1 Comment
pruth on 15 May 2018
this is the error.
Error using cat Dimensions of matrices being concatenated are not consistent.
Error in cell2mat (line 83) m{n} = cat(1,c{:,n});
Error in readtxtdistro (line 36) rawdata(:,2) = str2num(cell2mat(alldata(:,3)));

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