Set y axis of image in imshow at the bottom without flipping the image

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Alfonso 2018-6-16

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评论： Ignacio Barranco Granged 2018-11-17

At the moment when I display the image with imshow the y axis are logically set with the origin at the top. I would like to know if there is a way of setting the origin at the bottom but without flipping the image. If I use

set(gca,'YDir','normal');

The origin is at the bottom but the image is flipped.

I am using ecography images, so I can't use imagesc.

Thanks in advance.

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回答（1 个）

Image Analyst 2018-6-16

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I don't understand what you want. Do you have tick labels but want the tick labels flipped but the image not flipped? If so use yticklabels()

grayImage = imread('cameraman.tif');
imshow(grayImage);
axis on;
[rows, columns, numberOfColorChannels] = size(grayImage)
yTickNumbers = rows - yticks
for k = 1 : length(yTickNumbers)
  ytl{k} = sprintf('%3d', yTickNumbers(k));
end
yticklabels(ytl)