Change width on fitted line in function fitlm

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

Answer 1

[dpb]

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
>>

[Vlatko Milic]

Thank you, I hope one day I become good as you in Matlab :)

It worked like a charm!

[Vlatko Milic]

Dpd,

When I use Confidence bounds only the lower line-widht is changed and not the upper? What can I do?

Regards, Vlatko

[dpb]

TMW only set a value for 'DisplayName' on one of the two confidence bounds lines so wouldn't have duplicates in the legend box.

The two confidence lines are the last two in the array; you have to set both to change both. You can only set one handle at a time using dot notation; set() the function will let you do both in a single call.

[Vlatko Milic]

Thank you! However, I don't really follow the last line:" set() the function will let you do both in a single call".

What should I set?

[dpb]

'linewidth' property

set(hLM(3:4),'LineWidth',1);  % set both confidence lines same time

See doc set for details...