getting the axis position correctly

dk
2011 4 20
3 个回答
回答已采纳
更新时间：2021 10 23
34 次查看（30 天）

1 个投票

I can get the position of the axis easily
figure,plot([0 1], [0 1])
axis equal
AxesHandle=findobj(gcf,'Type','axes');
get(AxesHandle,'Position')
However when I modify the axis limits the axis position does not update.
axis tight
get(AxesHandle,'Position')
still gives me the same answer. How do I get the correct axis position in the second case?

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 采纳的回答

Matt Fig
Matt Fig 2011-4-20

2 个投票

What changes is the tightinset property and plotboxaspectratio.
figure,plot([0 1], [0 1])
axis equal
AxesHandle=findobj(gcf,'Type','axes');
pt1 = get(AxesHandle,{'Position','tightinset','PlotBoxAspectRatio'});
pt1{:}
axis tight
pt2 = get(AxesHandle,{'Position','tightinset','PlotBoxAspectRatio'});
pt2{:}

4 个评论
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Paulo Silva
Paulo Silva 2011-4-20
Interesting information, +1 vote
dk
dk 2011-4-20
This was helpful. However in the case below the distance from the plot area to the edge of the figure is changing. However neither the position nor the tightinset properties are changing.
figure,plot([0 1], [0 1])
set(gcf,'position', [ -1904 468 1831 420])
axis equal
axis tight
AxesHandle=findobj(gcf,'Type','axes');
pt1 = get(AxesHandle,{'Position','tightinset'}); % [left bottom right top]
pt1{:}
set(gcf,'position', [ -1904 468 793 420])
pt2 = get(AxesHandle,{'Position','tightinset'});
pt2{:}
Matt Fig
Matt Fig 2011-4-20
All you are doing here is moving the figure around. Of course this doesn't change the axes properties! Why would you think that moving the figure around would change the axes properties?
Also, you can use GCA to get the axes handle, just like GCF gets the figure handle...
Matt Fig
Matt Fig 2011-4-20
If you want to get the distance between the edge of the figure and the axis plot area, you need to stop using normalized units and switch to pixels. Then you will see a change.....
figure,plot([0 1], [0 1])
set(gcf,'position', [104 468 1831 420])
axis equal
axis tight
set(gca,'units','pix')
pt1 = get(gca,{'Position','tightinset'}); % [left bottom right top]
set(gca,'units','norm')
pt1{:}
input('Hit return to continue...');
set(gcf,'position', [104 468 793 420])
set(gca,'units','pix')
pt2 = get(gca,{'Position','tightinset'});
set(gca,'units','norm')
pt2{:}

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更多回答（2 个）

Kelly Kearney
Kelly Kearney 2011-4-20

8 个投票

I wrote a little function that analyzes the aspect ratios and calculates the plotted axis region:
http://www.mathworks.com/matlabcentral/fileexchange/9615-plotboxpos
Should return exactly what you're looking for.

2 个评论
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dk
dk 2011-4-20
Thank you. You are right, this is what I was looking for.
Yujendra Mitikiri
Yujendra Mitikiri 2021-10-23
编辑：Yujendra Mitikiri 2021-10-23
Thank you! This is exactly what I needed, in order to add annotations after making "axis equal."

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Paulo Silva
Paulo Silva 2011-4-20

0 个投票

The position remains the same, don't believe me? go to Tools and press Edit Plot, now click on the axis :)
One thing that do change is the:
xlim

1 个评论
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dk
dk 2011-4-20
I know the matlab axis position property is not changing. What I want is the position of the actual plotting area.

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