MATLAB Answers

extracting only number from text file

18 views (last 30 days)
ImageAnalyst
ImageAnalyst on 20 Apr 2020
Commented: Akira Agata on 22 Apr 2020
Hi,
I have a large text file which has data in below format
frame_count: 1, frame_type: p, mv_dst: (8, 8), mv_src: (8, 8), mv_type: f, motion: (0, 0, 4), mb: (16, 16)
frame_count: 1, frame_type: p, mv_dst: (24, 8), mv_src: (24, 8), mv_type: f, motion: (0, 0, 4), mb: (16, 16)
and so on.
I want to extract the value of mv_dst,mv_src and first two numbers of value motion and store in a matrix in below format
frame_count: 1, frame_type: p, mv_dst: (8, 8), mv_src: (8, 8), mv_type: f, motion: (0, 0, 4), mb: (16, 16)
Matrix should have value like this
first matrix with value from mv_dst(8,8) and first value from motion motion: (0, 0, 4) [ 0 in this case]
x_vec y_vec motion
8 8 0
second matrix with value from mv_src(8,8) and second value from motion :motion: (0, 0, 4) [ 0 in this case]
x_vec y_vec motion
8 8 0

Accepted Answer

Akira Agata
Akira Agata on 21 Apr 2020
How about the following?
% Read the original text file
c = readcell('data.txt','Delimiter','\n');
% Extract coordinates from each line
cData = regexp(c,'\d+,\s+\d+(,\s+\d+)*','match');
cData = vertcat(cData{:});
% Arrange the numbers
mv_dst = str2double(split(cData(:,1),','));
mv_src = str2double(split(cData(:,2),','));
motion = str2double(split(cData(:,3),','));
% 1st and 2nd matrix
T1 = array2table([mv_dst,motion(:,1)],'VariableNames',{'x_vec','y_vec','motion'});
T2 = array2table([mv_src,motion(:,2)],'VariableNames',{'x_vec','y_vec','motion'});
  5 Comments
Akira Agata
Akira Agata on 22 Apr 2020
Hi Arya-san,
Thank you for sharing the file. But, unfortunately, I could not unzip the file. Could you upload the file (original file or newly zipped file) again?

Sign in to comment.

More Answers (0)

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!