Error in read text file

Question

Mekala balaji 2016-2-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/267338-error-in-read-text-file

编辑： Walter Roberson 2016-2-10

I want to read text file, and extract required data. I divided into two sections, function and main. But I am getting error.

Function code (name: HCI.m):

function data=HCI(filename)
% filename='HCI.txt';
fin =fopen(filename);
for i=1:300
    line{i}=fgetl(fin);
end
fclose(fin);
Str=strsplit(line{5}, ': ');
BeamSetupID=cell2mat(Str(2));
BeamSetupID=BeamSetupID(2:end);
for i=1:300
    Str=strsplit(line{i}, '     ');
    str(i,:)=Str(1);
end
DopTemp=regexp(line{find(strcmp(str,'Sample.Measuring time'))},' +','split');
Dop=cell2mat(DopTemp(6));
data={BeamSetupID Dop};

main code (name: main.m):

clc;
clear all;
close all;
path='D:\Mekala_Backupdata\Matlab2010\Filesfolder\PartofTextFilesData';
filetype='txt';
[files]=recursiveFileList(path,filetype);
[m n]=size(files);
outputfilenameTemp=regexp(path,'\','split');
inputfilename=['data_','_',outputfilenameTemp{5} '_' outputfilenameTemp{end} '.csv'];
Data=[];
DataFinal=[];
DataFinalTemp=[];
Var=[];
for i=1:m
    filename=[path '/' files(i).name];
    data=HCI(filename);
    Data=[Data;data];
end
Title={'BSID' 'PPID' 'StartTime'};
DataFinalTemp=[DataFinalTemp Data];

But I am getting below error when I run:

No delimiter in string, inputString is returned ??? Index exceeds matrix dimensions.

Error in ==> HCI at 13 str(i,:)=Str(1);

Error in ==> main at 16 data=HCI(filename);

Kindl some one help.

Many thanks in advance.

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Answer 1

Walter Roberson 2016-2-9

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/267338-error-in-read-text-file#answer_209182

It is common for the last line of the file to exist but be empty or only whitespace. You do not appear to account for that possibility.

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Mekala balaji 2016-2-10

How to correct the code without any error

Walter Roberson 2016-2-10

编辑：Walter Roberson 2016-2-10

在 MATLAB Online 中打开

Replace

for i=1:300
    line{i}=fgetl(fin);
end

with

K = 0;
lines = {};
for i=1:300
    thisline = fgetl(fin);
    if ~ischar(thisline); break; end   %end of file ?!
    if ~isempty(strtrim(thisline))
      K = K + 1;
      lines{K} = thisline;
    end
end

and replace your references to "line" with references to "lines".

Also, change

for i=1:300

to

for i = 1:length(lines)

(Please do not use "line" as the name of a variable, as line() is an important MATLAB graphics function call; there is too much risk of conflict in the meanings, and too much risk of confusion for other people reading the code.)

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