Index exceeds the number of array elements (1)

I'm confused as to why I'm getting this error:

Index exceeds the number of array elements (1).

Error in ReadVTData2 (line 25)

col2(i) = str2double(str_col(2));

Error in ProcessVT (line 8)

[data, numrows]= ReadVTData2(VTfilename);

It works well for line 24 but not 25. Please explain.

Answer 1

[KSSV]

Your file nums2.txt has alternate lines of data..every alterate line is a empty line, when you try to read using the file using line:

getrow=fgetl(fileID); 

you will get empty str_col

So these lines:

col1(i) = str2double(str_col(1));
col2(i) = str2double(str_col(2));

throwing error.

Two options:

1. Remove the alternate empty lines

Or, use if else conditon in the file ReadVTData2.m

if length(str_col) > 2
     col1(i) = str2double(str_col(1));
     col2(i) = str2double(str_col(2));
end

NOTE: There are many other elegant ways of reading such files. You can better use readtable.