Read data from matlab struct and merge

5 views (last 30 days)
Curious Mind
Curious Mind on 29 Jun 2020
Answered: Love Matlab on 29 Jun 2020
Hello, please I have multiple .mat files in a folder. Each one is a matlab struct called T and each T contains contains 2 files, p and s. 1. I want to load all the .mat files into matlab workspace, extract and concatenate only the second columns of all p in each of the files into a single matrix called M. 2. Extract and concatenate or merge the second row of all the s of all the files into a matrix called G.
  4 Comments
Love Matlab
Love Matlab on 29 Jun 2020
Edited: Love Matlab on 29 Jun 2020
what do you get when you do : load('FILE.mat') ? when you load each .mat file are you getting a structure or just a N x M matrix?
Curious Mind
Curious Mind on 29 Jun 2020
It comes out as a structure. Within the structure is a p and s

Sign in to comment.

Answers (1)

Love Matlab
Love Matlab on 29 Jun 2020
Try this. I am still confused about what you exactly what to extract. The cells P, and S after the for loop should contain all P and S data.
%% Select Folder with .mat files
folder = uigetdir(pwd) ; % select folder with images
files = dir(fullfile(folder,'*.mat')); %create structure with folder data
S = cell(1,length(files)); %create empty storage cells
P = cell(1,length(files));
for i = 1:length(files)
name = files(i).name ; %filename
x = load(name); %load.mat file
P{1,i} = [x.p]; %save all p data
S{1,i} = [x.s]; %save all s data
end
allP = cell2mat(P); %change to matrix
M = allP(2:2:end); %extract every 2nd variable (second column)
allS = cell2mat(S); %change to matrix
G = allS(2,:); %extract only the second row

Categories

Find more on Data Type Identification in Help Center and File Exchange

Products


Release

R2019b

Community Treasure Hunt

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

Start Hunting!