get plotyy second axis handle

2011 4 13
3 个回答
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0 个投票

I know I can get the second axis handle for plotyy with
[AX,~,~] = plotyy(x1,y1,x2,y2)
and the handle is AX(2) but i use the plotyy function inside another function so AX is deleted because its a local variable
when i use gca (after running the function) in the command window I get what would be AX(1)
So my question is how to get the second axis handle after running the function

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 采纳的回答

Paulo Silva
Paulo Silva 2011-4-13

1 个投票

AX=findall(0,'type','axes');
AX(2) %what you are looking for?!

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Zakary Stone
Zakary Stone 2011-4-13
thanks i tried it and looked about this function and I think this will work for me
Zakary Stone
Zakary Stone 2011-4-14
actually using
AX=findall(0,'type','axes')
what i am looking for is
AX(1)
thanks
Paulo Silva
Paulo Silva 2011-4-14
You can compare the handles
AX=findall(0,'type','axes');
if AX(1)==gca
MySecondAxes=AX(2)
else
MySecondAxes=AX(1)
end
MySecondAxes %the handle you are interested in (not the current axes)

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更多回答（2 个）

Jarrod Rivituso
Jarrod Rivituso 2011-4-13

1 个投票

This also would work:
secondAxes = findobj('Type','axes','Color','none')

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Zakary Stone
Zakary Stone 2011-4-13
this returns the result that i want but i don't get how it works after reading about it in the help files
but thanks
Jarrod Rivituso
Jarrod Rivituso 2011-4-13
no problem. fyi, the reason this works is because plotyy works by creating two axes on top of one another, with the second axes' white background missing. so, you can easily find that second axes by looking for an axes that has it's 'Color' property set to 'none'
Zakary Stone
Zakary Stone 2011-4-14
thanks for the explanation
this is exactly what i need(now that i know how it works)
sorry that i already gave the accepted answer check
Paulo Silva
Paulo Silva 2011-4-14
All the solutions provided work just fine :)

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Zakary Stone
Zakary Stone 2011-4-13

0 个投票

thanks for your responses i don't know whether your answers are right or wrong because i am still learning the the program and i'm not familiar with the functions you used
however i after continuing to reading through t help files i found a solution
get(gcf,'children')
this gives me a list of the handles
thanks

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