Invert Y data (Y axis)

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Chalisa Mawla
Chalisa Mawla on 26 Apr 2022
Commented: Voss on 26 Apr 2022
Hi,
I have this script that will take data from 31 files, and make a colormap. I wanted to invert the y axis so that the 400 nm show up on the top (its of higher energy). How can I do that?
Thank you!
filenames={'000.mat','007.mat','013.mat','020.mat','027.mat','033.mat','040.mat','047.mat','053.mat','060.mat','067.mat','073.mat','080.mat','087.mat','093.mat','100.mat','107.mat','113.mat','120.mat','127.mat','133.mat','140.mat','147.mat','153.mat','160.mat','167.mat','173.mat','180.mat','187.mat','193.mat','200.mat'};
for i=1:numel(filenames)
load(filenames{i});
%print(filenames{i});
t_data(:,i) = lum.y0
end
angle = linspace(0,0.2,21);
wav_leng = lum.x0.';
figure;
imagesc(angle,wav_leng,t_data); colormap gray; axis xy;
xlabel('kx')
ylabel('Wavelegnth (nm)')
colorbar

Accepted Answer

Voss
Voss on 26 Apr 2022
Do this:
set(gca(),'YDir','reverse')
at the end (or anywhere after imagesc).
  2 Comments
Voss
Voss on 26 Apr 2022
You're welcome!

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