how can i make figure longer on the x-axis and y-axis

Using command importdata to import a file. This returns a a matrix that has the size of n times 4, where n is the length of measurement in samples.

data = importdata([files_path 'part1_relax_volumes.txt']); data = data.data; %sampling frequency fs=500; %Copy the colum 4 into a new variable named volume. volume=data(:,4); %time vector t = 0:1/fs:(size(volume,1)-1)/fs; hf = figure; hf.Position = [0 0 570*2 466*2 ]; %makes figure longer on the x-axis and y-axis

plot(t,volume); ylabel('volume(L)') xlabel('t(s)') grid on;

Answer 1

[Adam]

doc pbaspect
doc daspect

both affect data plotting aspect ratio, if that is what you are asking, but you didn't really ask a clear question.

[sudeb saha]

i do not understand how can i figure plot volume along time t with this code: hf = figure; hf.Position = [0 0 570*2 466*2 ];

[Adam]

I don't know why you specially want that code. That sets the size of the figure to 1140 by 932. The axes will resize in the same ratio inside it. Is that what you want? If not explain what you do want.