plot a fitted curve and specified axes

2020 5 14
1 个回答
更新时间：2022 2 10
11 次查看（30 天）

0 个投票

Heyhey,
I have a problem with the follwing lines
fit_func = fittype("poly1");
fitdata = fit(XValues,YValues,fit_func);
h=plot(ax,fitdata);
-> so I got the error
Error using plot
Data must be numeric, datetime, duration or an array convertible to double.
If I use this line instead:
h=plot(fitdata);
Everything is fine
So my question: how am I able to use plot to creates the line in the axes specified by ax?

3 个评论
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Alexander Richter
Alexander Richter 2022-1-28
Iam stucked at the same issue, did not find a solution yet. Any updates on the problem? Thanks
Geoff Hayes
Geoff Hayes 2022-1-29
@Alexander Richter - are you using the same code or something different? Please provide details.
Wave
Wave 2022-2-10
@Alexander Richter No updates from my side. Still using it without the specification of ax

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回答（1 个）

Geoff Hayes
Geoff Hayes 2020-5-14

0 个投票

Wave - from plot cfit or sfit object, try doing
plot(fitdata, 'Parent', hAxes)
where hAxes is the handle to your axes.

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Wave
Wave 2020-5-15
This will result to the error:
Error using cfit/plot>parseinput (line 332)
Must specify both XDATA and YDATA.
Error in cfit/plot (line 46)
[S1,xdata,ydata,S2,outliers,S3,ptypes,conflev] = parseinput(alltypes,varargin);
Geoff Hayes
Geoff Hayes 2020-5-15
What does the documentation for your version of MATLAB say about using plot and fit objects?
Marleen
Marleen 2022-2-9
Why is it possible to specify the parent axes (a Name Value pair) for sfit objects but not for cfit?
Geoff Hayes
Geoff Hayes 2022-2-10
@Marleen - you may want to ask this as a new question.

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Wave
Wave
2020-5-14

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Wave
Wave
2022-2-10

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