Multiple Plots App Designer

2021 2 15
1 个回答
更新时间：2021 3 23
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0 个投票

I am trying to plot graphs of various iterations into the same graph with App Designer. Temps_ON, Temps_OFF,... are columns of a table.
The problem encountered is that it only plots the last value (for i=3 in this case). Any advice on how to manage this ?
while i<4
x=t.Temps_ON(i);
y=zeros(1,x);
y(1) =t.Puissance_ON(i);
x1= t.Temps_OFF(i);
y1=zeros(1,x1);
y1(1) = t.Puissance_OFF(i);
x2=t.Temps_reveil(i);
y2=zeros(1,x2);
y2(1) =t.Puissance_reveil(i);
% Plot modified data
for time=1:x-1
y(time+1)=y(time);
end
for time=1:x1-1
y1(time+1)=y1(time);
end
for time=1:x2-1
y2(time+1)=y2(time);
end
plot(app.UIAxes,(1:x),y,'b',(1+x:x1+x),y1,'b',(x+x1+1:x+x1+x2),y2,'b');
i=i+1;
end

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Jakob B. Nielsen
Jakob B. Nielsen 2021-2-15
You need to set
hold on
By default, hold is set to "off". That means every new plot command overwrites any previously plotted items. If you set hold to "on", it will 'hold on' to whatever you have already plotted.
Mario Malic
Mario Malic 2021-2-15
In App Designer, you have to specify axes for which hold on will be active.
hold(app.UIAxes, 'on')
I have already try hold on and even hold(app.UIAxes,'on'); but it's not efficient since it will plot a new graph each time a value in the table is changed which is not what I want. I want to plot the graph for each line of my table (i is used to increment the number of the line in my table)
Mario Malic
Mario Malic 2021-2-15
Do you have any errors? Try checking these values for each step, maybe they are empty, or they are a single point. Single points are not visible by default, you'll need to specify the marker for those.
(1:x)
y
(1+x:x1+x)
(x+x1+1:x+x1+x2)
y2
I don't have any errors. These values work correctly since I can see the good graph for the 3rd value in this case. The problem is the loop I don't understand why the previous graph are not plotted too

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回答（1 个）

Nikhil Sonavane
Nikhil Sonavane 2021-3-23

0 个投票

In my understanding, hold on retains plots in the current axes so that new plots added to the axes do not delete existing plots. It doesn't update the graph when an entry is changed in the table unless you run the code again. You can refer to the documentation of hold for more details about the function.

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