"yyaxis left" not working on 2015b?

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SHR 2016-3-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/272413-yyaxis-left-not-working-on-2015b

评论： Walter Roberson 2017-4-14

Hi,

I'd like to produce a scatter plot with two y axis, one on left and one on right side. I tried to follow an example from MathWorks website (topic: yyaxis) , but I get the following error: Undefined function or variable 'yyaxis'.

Is this a bug in the R2015b version?

Specifically, I followed this example:

load('accidents.mat','hwydata')
ind = 1:51;
drivers = hwydata(:,5);
yyaxis left
scatter(ind,drivers)
title('Highway Data')
xlabel('States')
ylabel('Licensed Drivers (thousands)')

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Ganesh P. Prajapat 2017-4-14

I have the same problem with MATLAB 7.10.0 (2010a)

Steven Lord 2017-4-14

The answer is the same now as it was a year ago and as it was six months ago. You cannot use a function introduced in one release of MATLAB (in this case release R2016a) in an earlier release of MATLAB (like release R2010a.) Release R2010a came out roughly six years prior to the introduction of yyaxis in R2016a.

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Answer 1

Steven Lord 2016-3-9

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https://ww2.mathworks.cn/matlabcentral/answers/272413-yyaxis-left-not-working-on-2015b#answer_212999

No, this is NOT a bug. The bottom of the documentation page for YYAXIS states that this function was introduced in release R2016a. It is not present and will not work in earlier releases.

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SHR 2016-3-9

Thank you. I see that in earlier releases plotyy(x,y1,x,y2,'scatter')can be used as an alternative. However, the plotted data for the y1 and y2 are the same color and symbol.