MATLAB Answers

Simulink scope autoscale

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Raldi
Raldi on 17 Jan 2012
Answered: Jessy Mathault on 27 Aug 2021
Hi everyone, i was wondering if there is a way for a scope i use in a simulink model to automaticaly autoscale. Maybe from adding a code to its startfunction???

Accepted Answer

Titus Edelhofer
Titus Edelhofer on 18 Jan 2012
Hi Raldi,
assuming the scope blocks are open, the following piece of code does the autoscaling for you:
% find all scope blocks as MATLAB figures:
set(0, 'showhiddenhandles', 'on')
scope = findobj(0, 'Tag', 'SIMULINK_SIMSCOPE_FIGURE');
for i=1:length(scope)
% this is the callback of the "autoscale" button:
simscope('ScopeBar', 'ActionIcon', 'Find', scope(i))
end
set(0, 'showhiddenhandles', 'off')
Titus
  5 Comments
Ignacio
Ignacio on 18 Sep 2013
To make the autoscale function automatically i created a matlab function with the code above. The code will be executed each certain period of time. In my case 3 seconds, i did it with this function and the block clock of Simulink. the function that i have created is this one: -------- function u=scope(y) % find all scope blocks as MATLAB figures: u=0; z=mod(y,3)==0 if(z==1) set(0, 'showhiddenhandles', 'on') scope = findobj(0, 'Tag', 'SIMULINK_SIMSCOPE_FIGURE'); for i=1:length(scope) % this is the callback of the "autoscale" button: simscope('ScopeBar', 'ActionIcon', 'Find', scope(i)) end set(0, 'showhiddenhandles', 'off') end
end ----------- Then, in the clock block i selected 1000 as decimation and i use this code in a "interpreted Matlab function" block just writting "scope" in the label "Matlab function". I drive the output of this function to a scope but this output is not really interesting.
best regards

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More Answers (5)

Ilham Hardy
Ilham Hardy on 17 Jan 2012
By clicking the binocular button on the scope, perhaps?
  2 Comments
Mandip Regmi
Mandip Regmi on 20 May 2020
I did not find the binocular button too

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TAB
TAB on 18 Jan 2012
Add below piece of code in your 'StopFcn' callback function. When the simulation is completed, it will open and autoscale all the scopes in the model.
[EDITED TO WORK FOR MULTIPLE INPUT SCOPE]
bh=find_system(gcs,'FindAll','on','BlockType','Scope');
for x=1:length(bh) %close all scope
set_param(bh(x),'Open','off');
end
for x=1:length(bh)
set_param(bh(x),'Open','on');
fh=gcf;
AxesInScope = findall(fh,'type','axes');
for y=1:length(AxesInScope)
set(fh,'CurrentAxes',AxesInScope(y));
xlim('auto');
ylim('auto');
end
end
  6 Comments
TAB
TAB on 18 Jan 2012
As your scope is reading 2 inputs, previous code was autoscaling only one graph keeping other as it is.
I have updated the code so that it can work for multiple input scopes.

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Andreas Goser
Andreas Goser on 18 Jan 2012
Typically, when users describe this, they are happy with the Time Scope Block from DSP System Toolbox. Here is the link to the documentation.
Especially, as Raldi is working at a university in the field of Signal Processing, this product should be available. Note that previous versions used different names like Signal Processing Blockset or DSP Blockset.
  4 Comments
Raldi
Raldi on 18 Jan 2012
i think there is another way, ill try to change its YLim throygh my gui and update it.

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Mingli ZHU
Mingli ZHU on 22 Apr 2021
Edited: Mingli ZHU on 22 Apr 2021
set(0, 'showhiddenhandles', 'on')
%current graphic object
scope=gcf;
%find Autoscale object
scale=findobj(gcf, 'Tag', 'uimgr.uisplittool_Autoscale');
%click this object
feval(get(scale,'Callback'),scale,[]);
%find PrintToFigure Menu
fig=findobj(gcf, 'Tag', 'uimgr.uimenu_PrintToFigure');
%Click this Menu
feval(get(fig,'Callback'),fig,[]);
set(0, 'showhiddenhandles', 'off')

Jessy Mathault
Jessy Mathault on 27 Aug 2021
This function:
simscope('ScopeBar', 'ActionIcon', 'Find', scope(i))
Doesn't seem to be supported anymore in MATLAB 2020b.
This seems to work:
allAxes = findall(gcf,'type','axes');
for x = 1:numel(allAxes)
axis(allAxes(x), 'auto y');
axis(allAxes(x), 'auto x');
end

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