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How to set images to fill the axes?

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Giann Geocadin 2014-8-25

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评论： Ahmer Shahid 2019-1-13

采纳的回答： Star Strider

I am trying to make it so that the all the images I show in an axes fill the axes completely, no matter the size of the image.

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Star Strider 2014-8-25

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在 MATLAB Online 中打开

Use:

axis image

See the documentation for axis for details.

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Giann Geocadin 2014-8-25

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how do I implement axis image and should I just switch the name from axes to axis?

Star Strider 2014-8-25

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在 MATLAB Online 中打开

Put the ‘axis image’ call just after you create the figure window:

ppr = imread('peppers.png');
figure(1)
imshow(ppr)
axis image

Giann Geocadin 2014-8-25

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if i'm not using a figure, would I just implement it after the imshow ('image')

Star Strider 2014-8-25

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Yes. I do figure for each one out of habit because then I don’t overwrite an existing figure, but it is not necessary.

Giann Geocadin 2014-8-25

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Ok so the width of the images isn't changing, however the height of the images is still moving even with the axis image implemented after every image.

Star Strider 2014-8-25

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在 MATLAB Online 中打开

You can set the height and width for all of them to be the same by adding 'XData' and 'YData' to the imshow call:

imshow(ppr, 'XData',[1 315], 'YData',[1 400]);

Experiment with those values until you get the result you want. Note that changing the aspect ratio with these will distort the displayed image.

Giann Geocadin 2014-8-25

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a distorted image is fine, thanks for the help

Star Strider 2014-8-25

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My pleasure!

Stelios Fanourakis 2018-5-23

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@Star Strider. Thanks a lot Star Strider. Your comment was very helpful

Jan 2018-5-23

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[MOVED from flags] Stelios Fanourakis wrote:

Very nice. It worked to me. Thanks

@Stelios: Please use flags only to inform admins and editors about inappropriate content, like spam or rudeness. Thanks.

Star Strider 2018-5-23

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@Stelios — My pleasure.

@Jan — Thank you.

Ahmer Shahid 2019-1-13

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How can I use this in app desginer?

can I use this for specific axes?

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