Change width on fitted line in function fitlm

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Vlatko Milic 2019-11-21

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https://ww2.mathworks.cn/matlabcentral/answers/492338-change-width-on-fitted-line-in-function-fitlm

评论： dpb 2019-11-22

采纳的回答： dpb

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Hi,

I can't change the witdh on a fitted line based on X number of data points when I use fitlm-function. I am only able to change the width of the data points themselves.

Do you have any ideas?

The code is:

mdl=fitlm(T(Index,3),F);
plot(mdl)
title(strcat(subfoldernames))

Kind regards, Vlatko

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dpb 2019-11-21

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Yeah, save the handles returned by plot for the linear model fit...

mdl=fitlm(T(Index,3),F);
hMDL=plot(mdl);
hFIT=findobj(hMDL,'DisplayName','Fit');
hFIT.LineWidth=1;
...

You can find this out by returning the handle array from plot and see that it is a four-handle array...and example here was

>> load carsmall                  % MATLAB sample data set
>> lm=fitlm(MPG,Weight);          % fit a simple model
>> figure
>> hLM=plot(lm)                   % plot it, return handles array
hLM = 
  4×1 Line array:
  Line    (Data)
  Line    (Fit)
  Line    (Confidence bounds)
  Line
>> hLM(2).LineWidth              % the fit is the second handle in the arrray; query it
ans =
          0.50
>> hLM(2).LineWidth=1;           % set it to new value
>>