# How to plot categorical data to compare with SimBiology simulation result?

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Arthur Goldsipe
on 11 Mar 2022

If I understand your question, you're primarily asking how to extract the simulation results at a specific time (for example, 5 days). It sounds like you already have the simulation results, which you obtained by calling sbiosimulate. I'm assuming your simulation time units are day. However, it's not clear to me whether you have those results as a SimData object or as numeric arrays. If you have the results in SimData you can estimate the results at 5 days using the resample method. If you have the results in numeric arrays, you can estimate the resutls at 5 days using the interp1 function. In both cases, I default to the pchip interpolation method. Here's some sample code.

t = 5;

% Case 1: SimData

simdata = sbiosimulate(model);

simdata1 = resample(simdata, t, 'pchip');

[~,x1] = getdata(simdata1);

% Case 2: Numeric arrays

[tManyTimes,xManyTimes] = sbiosimulate(model);

x2 = interp1(tManyTimes, xManyTimes, 5, 'pchip');

% Now plot the data

plot(t, x1, 'o')

plot(t, x2, 'o')

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