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SimBiology Diagram & Repeated Assignment Rules
As of the current release (R2013b), SimBiology diagrams only shows species, compartments, and reactions. As you suggest, the onl...

12년 초과 전 | 0

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Simbiology Error: "Error evaluating rate rule (............) at t=0.0000"
Hi Cansu, This message means that your rate rule could not be evaluated because it is invalid for some reason. This could hap...

12년 초과 전 | 0

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What's the problem that makes my MATLAB busy?
You interrupted ode45, the function that solves your ODEs. This means MATLAB was still busy integrating your ODEs. It can tak...

12년 초과 전 | 0

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Simbiology Error- Invalid assignment syntax or parse error for rule
Hi, When you write a rate rule in SimBiology, you don't write the d/dt on the left-hand side of the equations. For example, t...

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How exactly does SimBiology treat model objects?
Hi Sam, As you discovered, a SimBiology model is a "handle" object. This means that your variables model and model2 both refe...

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Simbiology fails to load dataset, model fit and simulation
Hi Peter, You can try increasing the amount of memory allocated to Java. You'll find instructions <http://www.mathworks.com...

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Why can't I load Simbiology data?
Hi Ted, It's possible that the SimBiology project was corrupted. I think your best bet is to contact Tech Support and see if ...

12년 초과 전 | 0

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ベクトルのスケーリング
入力したベクトルの大きさを１にしてください。

12년 초과 전

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Upper limit or saturation
Hi Peter, The "right" way to implement an upper limit or saturation really depends on how you want to physically model the ef...

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How to change ode solver settings for a Simbiology model?
Hi Zoltan, Yes, there is a way to change several options related to the ODE solver, including the absolute and relative toler...

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Problem starting Simbiology in MATLAB
Hi Akintunde, This problem generally means you have an inconsistent version of files in your installation. Could you have ins...

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Non negative values for species in Simbiology
Hi Kieran, I'm just going to paste an answer to a similar question from a MATLAB <http://www.mathworks.com/matlabcentral/news...

거의 13년 전 | 1

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the desktop could not fit the 3 compartment PK model.
Hi Yang, When you specify that your model has linear{Cl,V} in the Central compartment, then a parameter named "Cl_Central" sh...

거의 13년 전 | 0

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Parameter estimation with sbioparmestim, using experimental data replicates or averages / standard deviations
Hi, sbioparamestim does not currently support fitting data that contains replicate measurements. To use sbioparamestim, you w...

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How do I do parameters Estimation in SimBiology using Optimization toolbox?
Hi, Calling lsqnonlin via sbioparamestim uses slightly different default options than calling lsqnonlin directly. The referen...

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simbiology parameter estimation with dosing schedule
Let me go ahead and take a stab at answering this. With additional clarifications, I can offer a more tailored example. You u...

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

대략 13년 전

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

대략 13년 전

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Is my wife right?
Regardless of input, output the string 'yes'.

대략 13년 전

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Numerically accuracy problem in solving ODEs when subtracting two close large numbers
First off, you mention a parameter nu, but it's not referenced anywhere in your equations. I'm guessing it is a parameter that i...

13년 초과 전 | 0

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How can i define a parameter with if condition?
Hi, The short answer is that SimBiology cannot *directly* use "if" or "switch", but you *can* use them *indirectly* by puttin...

13년 초과 전 | 0

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Individual or population fit in simbiology
Hi, First off, I now see you posted a similar follow-up comment on a previous question. I don't get notified of such replies,...

13년 초과 전 | 0

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Get data through a currently empty link
Hi Xiaoqing, If you have SimBiology, you already have the data. Just load it from the file pheno.mat, as described in this ex...

13년 초과 전 | 0

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How to fit kinetic law parameters to a multiple data set?
Hi, It is possible to estimate a single set of parameter using multiple experiments using the "individual fit" estimation met...

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Why do i get a task error message that "CAT Arguments dimensions are not consistent" in a simulation task?
Hi Martin, I believe this is due to a bug that was fixed in MATLAB R2011b. Is this the only reaction in your model? Becaus...

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ODE solver with Heavaside function
Hi, You need to take special care when your system of ODEs contains a step change, like a Heaviside function. These can be ha...

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Matlab ode solver and Simbiology gives different results on the same model
Hi, If you are using MATLAB version R2012b, you can get a text version of the ODE equations and see where they differ from yo...

13년 초과 전 | 1

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How can I set the step size to a constant value for the ode solver in simbiology?
Hi Scott, SimBiology does not support a true fixed step solver, but if your real goal is to have simulation at specific times...

13년 초과 전 | 0

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How to solve a compiler related problem to make a Parameter Fit run
Hi Martin, My guess is that MATLAB has still not been properly set up for use with Xcode. Were you following the instructions...

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Problems with the 'null' variable in Simbiology
Hi David, The problem is with the units on the rate constant for the reaction null -> T. Let's say you have the reaction rate...

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