Simulink scope autoscale

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???

Answer 1

[Titus Edelhofer]

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

[Raldi]

should i add this in the Stopfunction inside tho model or in the GUI?

[Raldi]

i am asking because when i try to run it as an m file it sais

Error using Simulink.scopes.Util.SimpleSimStatus (line 2589)

Invalid Simulink object handle

[Raldi]

Sorry my bad it is working!!! Thanks Titus...

[Scott Rauscher]

Where did you implement this Raldi? I'm not sure how to use the code that Titus supplied. I tried adding it in a Matlab Function that runs in the Simulink model, but that didn't work

I also tried just running the code in Matlab afterwards and that did nothing. What did you do?

[Ignacio]

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

Answer 2

[Ilham Hardy]

By clicking the binocular button on the scope, perhaps?

[Raldi]

well i said automatically so this excludes clicking stuff :)

[Mandip Regmi]

I did not find the binocular button too

Answer 3

[TAB]

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

[Raldi]

it doesnt seem to be working, where exactly should i insert this code. I have a gui that can interact with the model if that helps.

[Ilham Hardy]

On your simulink model goto: File>>Model properties>>Callbacks>>StopFcn

[TAB]

You can insert this code in the 'StopFcn' callback function of model.

[1] Open Your Model

[2] Goto File -> Model Properties

[3] Click on callback Tab in Model Properties window

[4] Select 'StopFun' on left side of window

[5] Paste the above code in Text box.

The code will be executed when the simulation stops (after completion or using stop button).

Once simulation is stoped, all the scopes in model will be opened and autoscaled automatically.

[Raldi]

Still, it wont autoscale it. It only opens a figure in the end of the simulation. Does it have any relevance that i am using a scope with two inputs?

[Raldi]

What if i somehow used set Ymin = min(inout) Ymax = max(inout)... is this possible?

[TAB]

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.

Answer 4

[Andreas Goser]

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.

[Raldi]

Thank you Andrea but still the time scope is not what i exatly need, you see i have two main signals that need to be shown in the same scope.

[Andreas Goser]

Well, then you might need to write your own block (s-function).

[Raldi]

Yeah i figured you might say that. The thing is that i am not sure how to do that.

[Raldi]

i think there is another way, ill try to change its YLim throygh my gui and update it.