How to open Tonatiuh output .DAT files in MATLAB?

Hi, I have output files from Tonatiuh ray-tracing software but I am unable to open this file in any other software. I was wondering if there is any way to open it in MATLAB so that I can perform the analysis that I need.

Any help would be appreciate in this regard. This is a binary output file with a .DAT extension. I am unable to uplaod the file here so I am attaching a One-Drive link if anybody wants to have a look.

File link: https://mcgill-my.sharepoint.com/:u:/g/personal/muhammad_t_manzoor_mail_mcgill_ca/EZZ1GKzL4qFAgQ_uQ_eQYjQBbKQQohNa52twkqotNCQM3w?e=FqajE5

[Abdeali Attarwala]

Also please see if this code is appropriate in regard to above question

fileID = fopen('D:\docs\Research Project\3D pipe simulations\test2_1.dat');
Tube_Raw_Data = fread(fileID,'double','b'); % b is for Big-endian ordering
Tube_Processed_Data = reshape(Tube_Raw_Data, [6,length(Tube_Raw_Data)/6]);
Tube_Data = Tube_Processed_Data';
Tube_Data_x = Tube_Data(:,2);
Tube_Data_y = Tube_Data(:,3);
Tube_Data_z = Tube_Data(:,4);

[Vishesh]

The File link has expired now. So I am unable to access it.

For reading DAT file , you can use "fread" function.

1. The "fread" function takes three arguments: the file identifier, the number of elements to be read, and the data type. Here is a link to a documentation page with more information. https://www.mathworks.com/help/matlab/ref/fread.html?searchHighlight=fread&s_tid=doc_srchtitle
2. Each call to "fread" reads a number of bytes specified by the number of elements and the data type being read. The file pointer is left immediately after the last element read.
3. Refer to the "precision" section of the above link to see which precision flags correspond to different data types/number of bytes.

[venu]

Respected sir,

I am also facing same problem did you done within please help me

here by i am attaching the file google drive link https://drive.google.com/file/d/1e6J5ix29uK20r1WKoIg3zyze7Es1Ksfz/view?usp=drive_link

please kindly help me

Answer 1

[Walter Roberson]

The file format is described at https://code.google.com/archive/p/tonatiuh/

You might find it useful to use memmapfile to define a structure describing the binary layout, as you would then be able to refer to the parts by name and MATLAB would automatically do all the binary I/O work necessary.

[venu]

Respected sir,

When I open .dat file using matlab code there "n" number of number how can i under stand which value refers to what please help me sir.

for the reference i a attaching the values which i was extracted from my .dat file which is genertaed in tonatiuh software