Write arrays with exact values from .txt files with scientific notation

Hello together,

i read values from .txt files. The values are in scientific notation and have the form

   0.7553396358543418E-01
   0.7553483893557424E-01
            .....

My suggestion for this:

folder = ['foldername'];
filename_t = fullfile(folder, sprintf('%dHz_t_LS_%d.txt', f_sim, LS));
fileID_t = fopen(filename_t, 'rt');
t_total = textscan(fileID_t, '%sf,'HeaderLines',0);
t_total = t_total{1};

But unfortunately it never gives the correct value. I only get values in the form 0.0750, which is much too low accuracy.

i have already experimented with %16.8f etc., but did not reach my goal

Many greetings

[Stephen23]

"My suggestion for this"

will not work because the syntax is not valid:

t_total = textscan(fileID_t, '%sf,'HeaderLines',0);
%                            ^    ^           ^

[teasy]

this was a copy error, so the correct command would be

 t_total = textscan(fileID_t, '%f','HeaderLines',0);

but even this does not give the desired result

Answer 1

[Star Strider]

I suspect you have the format set at:

format short

Setting it to

format long

may be the solution,.

[teasy]

unfortunately this is not the solution to the problem

[Mario Malic]

This could be the answer.

How do you access the value you wrote 0.0750?

[Star Strider]

teasy — Perhaps we could do more to help if we had the text file to work with.

[teasy]

Here I have attached the file. The problem I see is that Matlab only takes 4 decimal places

[Mario Malic]

Try this function, supply it path to your file

Input_File_Path = 'C:\folders\54400Hz_t_LS_13.txt'
function File_Data = Read_File(Input_File_Path)
% Read_File reads supplied input file path
FID = fopen(Input_File_Path, 'r'); 
Counter = 1;
tline = fgetl(FID);
File_Data{Counter} = tline;
while ischar(tline)
    Counter = Counter+1;
    tline = fgetl(FID);
    File_Data{Counter} = tline;
end
File_Data(end) = []; % removes end of file line
File_Data = File_Data'; % moves data into column
File_Data = cellfun(@str2double, File_Data);
fclose(FID);

Output

>> format short
>> File_Data(1)
ans =
    0.0752
>> format long
>> File_Data(1)
ans =
   0.075221463585434

[Star Strider]

Mario Malic — Thank you.

teasy — this is what I get with your code and file:

format long
fileID_t = fopen('54400Hz_t_LS_13.txt','rt'); 
t_total = textscan(fileID_t, '%f','HeaderLines',0);
fclose(fileID_t);
t_totalm = t_total{1}

producing (for the first 5 values):

t_totalm =
   0.075221463585434
   0.075222338935574
   0.075223258053221
   0.075224177170868
   0.075225096288515

The rest are there as well, I simply did not reproduce them here.

[teasy]

Thanks a lot!

Individually the code of Mario Malic works.

But in the context of how I use it, it does not work.

It must have something to do with the Format command, because I still only get 4 decimal places in my code

[Mario Malic]

Well, That's why the context is important in the question.

[teasy]

The problem was that I looked at the variable in the workspace and the workspace display was short.

Sorry for the circumstances but thanks for the help!