Index in position 1 exceeds bounds

Question

Marvin Magill 2024-5-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2121166-index-in-position-1-exceeds-bounds

编辑： Voss 2024-5-22

在 MATLAB Online 中打开

I don't exactly see what I am doing wrong on or missing in index. But setting up the Date array probably off.

Thanks

Marv.

ERROR

Index in position 1 exceeds array bounds.

Error in Data_Analyzer (line 47)

Date{1,6} = str2num(Date{1,6})/1000;

CODE ...

clear clear all();
directory1 = pwd;
Folder1 = '\TDMS Read';
Folder2 = '\Figures';
Folder3 = '\Reports';
directory2 = sprintf('%s%s',directory1,Folder1);
directory3 = sprintf('%s%s',directory1,Folder2);
directory4 = sprintf('%s%s',directory1,Folder3);
cd(directory2);
TDMS = TDMS_readTDMSFile('C:\Users\e422425\Documents\MATLAB\TDMSData\TDMS Read\Practice_Data2.tdms');
DataSize = size(TDMS.data,2);
DataSize = 23
filename = 'Max_Min_Mean.xlsx';
cd(directory1);
header = {'Sensor Designator','Max','Min'};
ChanExtrData = cell(DataSize + 1,3);
ChanExtrData(1,:) = header;
%%First Motion Circuit
N = 23;
z1 = 0;
y = TDMS.data(1,N);
%Get Channel Name
c = TDMS.dataType(1,N);
if c == 10
    %Channel Information is pulled from x.propertyValues from this we derive
    %the individual channels start time and time differential/sample rate
    y = cell2mat(y);
    z = TDMS.propValues(1,N);
    z1 = z1+1; 
    NameArray = TDMS.chanNames(1,1);
    ChanName = NameArray{1}{1,z1};
    TimeStamp = z{1}{1,26};
    TimeDiff = z{1}{1,24};
    [ThrowAway,First_Motion_Index] = size(y);
    Date = regexp(TimeStamp,'\d*','Match');
    Date{1,6} = str2num(Date{1,6})/1000; 
    Date{1,5} = str2num(Date{1,5});

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Answer 1

Voss 2024-5-21

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2121166-index-in-position-1-exceeds-bounds#answer_1461181

编辑：Voss 2024-5-21

在 MATLAB Online 中打开

Check the value of TimeStamp and figure out why it's not what you expect, because regexp doesn't return any matches for that TimeStamp. Example:

TimeStamp = 'kljsdfh';
Date = regexp(TimeStamp,'\d*','Match')
Date =

  0x0 empty cell array
try
    Date{1,6}
catch e
    e.message
end
ans = 'Index in position 1 exceeds array bounds.'

If there were at least one match but fewer than 6 matches, you'd get a different error. Example:

TimeStamp = 'kljs55dfh';
Date = regexp(TimeStamp,'\d*','Match')
Date = 1x1 cell array
    {'55'}
try
    Date{1,6}
catch e
    e.message
end
ans = 'Index in position 2 exceeds array bounds. Index must not exceed 1.'

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Marvin Magill 2024-5-22

I like the try catch troubleshooting. Never used that.

So seems like the problem is the Date array size, just not being big enough so suppose I need to figure out how the "regexp: is deifning it. Date(1,6) doesn't work but Date(1,1) does. Will go back and review the syntax on this I guess probably something obvious just not at moment.

Thanks