reduce the size of figure,

Hello Everyone, How can I reduce the size of figure in Matlab? Thanks

Answer 1

[Jakob Sørensen]

Then you are looking for some clever matrix work, rather than figure size.

Try smth like this:

wavelength = 100;
a = 1:4001;
A = repmat(a, [3001 1]);

B = 3.*(sin((1-A).*2.*pi./wavelength))  + 1003;

figure;
imagesc(B);

Takes less than a second to run on my computer and does around the same. You might have to fix the last couple of details for it to be an exact match.

Answer 2

[Jakob Sørensen]

Here is an example:

% Create a 1000x500 px figure, at the position x,y = 10,10 (starting at the left 
% bottom corner)
superFig = figure('Position', [10 10 1000 500]);

If you want to change it for an already existing figure you just use the set function.

% Changes properties of figure named 'superFig'
set(superFig, 'Position', [10 10 1000 500]);

or

% Changes properties of current figure
set(gcf, 'Position', [10 10 1000 500]);

[simira atraqi]

How I add this code to my codes?

I have this matrix and go slowly when I run it, I want to reduce the time with the same wavelength.

xRes = 1; % Sets the resolution (step length), in µm, along the x-axis.

yRes = 1; % Sets the resolution (step length), in µm, along the y-axis.

zRes = 1; % Sets the resolution (step length), in µm, along the z-axis.

xLength = 4000; % Sets the length of the surface in X.

yLength = 3000; % Sets the length of the surface in Y.

wavelength = 100;

f = @(x) 3*sin(x*2*pi/wavelength) + 1003; % The function for the sine wave with the

% amplitude 3 µm and wave length of about 100 µm. Mean level is

% 1003 µm.

% Prints the sine wave into a matrix:

A = zeros(yLength/yRes+1,xLength/xRes+1);

for k = 1:length(A(:,1))

for l = 1:length(A(1,:))

A(k,l) = f(l-1);

end

end

[Jakob Sørensen]

I don't see how you get the size of a figure to affect that?

[simira atraqi]

figure(1);

imagesc(A);

[simira atraqi]

whos

Name Size Bytes Class

A 3001x4001 96056008 double array

Answer 3

[Jakob Sørensen]

Try this:

tic;
xRes = 1; % Sets the resolution (step length), in µm, along the x-axis. 
yRes = 1; % Sets the resolution (step length), in µm, along the y-axis. 
zRes = 1; % Sets the resolution (step length), in µm, along the z-axis.
xLength = 4000; % Sets the length of the surface in X. 
yLength = 3000; % Sets the length of the surface in Y.
wavelength = 100;
f = @(x) 3*sin(x*2*pi/wavelength) + 1003; % The function for the sine wave with the 
% amplitude 3 µm and wave length of about 100 µm. Mean level is 
% 1003 µm.
% Prints the sine wave into a matrix: 
A = zeros(yLength/yRes+1,xLength/xRes+1); 
for k = 1:length(A(:,1)) 
for l = 1:length(A(1,:)) 
A(k,l) = f(l-1); 
end 
end
toc;

and then...

tic;
figure(1); 
imagesc(A);
toc;

You will see that the plotting part only takes around 1/50 of the total time. What is taking so long is running a loop around 12 million times.

[simira atraqi]

yes,

Elapsed time is 294.952000 seconds.

Elapsed time is 0.141000 seconds.

but I want to reduce the time for all the program not only for the figure.