Continue simulation: resize workspace variables

Question

Amy 2017-2-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/326736-continue-simulation-resize-workspace-variables

评论： Sudarshan Kolar 2017-2-28

Hello!

I have run a simulation for 10.000 increments. Now I want to continue on this simulation so that in total 30.000 increments will be run.

For this purpose I want to use a loop to look at all the workspace variables and preallocate them without losing the older values:

for all variables in the workspace
  if size(variable,1)==10000
    variable(30000,:)=0
  elseif size(variable,2)==10000
    variable(:,30000)=0
  end
end

How can I do this?

I found the following things that could be an ingredient:

list=who;
size(char(list(1)));

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Amy 2017-2-28

Nothing is changed except for the number of increments that I want to run and the final time that I want to run it.

Sudarshan Kolar 2017-2-28

在 MATLAB Online 中打开

You can write a script that runs the model for 10 increments. Saves the data in an array and re-run the simulation for say 20 increments.

As an example, say my model has a "To workspace" block that logs a variable called "var1" every simulation.

storeData = []; %preallocate this for speed
sim('vdp','StopTime','10');
storeData = [storeData var1];
sim('vdp','StartTime','10','StopTime','20');
storeData = [storeData var1];
sim('vdp','StartTime','20','StopTime','30');
storeData = [storeData var1];