Create image axis with the origin in the centre

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Kyle Wang 2015-4-12

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https://ww2.mathworks.cn/matlabcentral/answers/197325-create-image-axis-with-the-origin-in-the-centre

评论： Kyle Wang 2015-4-13

Dear expert, I'm struggling at making a boxed axis around an image with the custom axis tick labels as seen in the sample.

The x-axis is on top with the origin at a specific position (not in the middle). Then the x-axis tick labels increase at both direction towards the top corners, which is like 50 40 30 20 10 0 10 20 30 40 50.

The y-axis sits at two edges of the box, starting from 0 and counting downwards until touching the end of the bottom corners.

Please suggest any clue to draw such axis. Many thanks

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Answer 1

pfb 2015-4-12

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编辑：pfb 2015-4-12

For the double y axis, see this answer to a similar question.

For the xaxis on top, look at the XaxisLocation property of the axes.

As to the position and labels of the ticks, see the xtick, xticklabel, ytick, yticklabel properties of the axes (look for axis properties in the documentation).