I'm currently developing a large seagrass growth model for Tampa Bat Fl. I have created a unit model and have coupled it to a hexagon grid. For the detail that I need I use 1000000 hexagons which will make the model run for ever. However i am considering dividing up the Bay into 10 to 20 more locallized hexagon grids that I could run in paralell using the a single unit model. Is there any way to do this within SIMILE or am I going to have to be more creative.
I have tried running the PEST interface, but arrive with the below error messages (...no such file or directory). I checked that I have full user rights to the "My simile files" folder. Any ideas of how to get around the problem? I am using Simile 4.9 and Windows 2003. No idea of which PEST version, but i downloaded it in January 2009.
Is there a way in Simile to define a global variable (either within a sub-model or across the whole model)?
I could create a variable and put an influence arrow to every variable in the model, but this would end up being a real mess in terms of what the model looked like. The particular model I'm thinking of at the moment is a boolean network model, where each link has a threshold. That threshold is the same for every link in the network.
I'm probably having quite a simple problem. I am creating a model similar to the 'degree days' model in the library. However instead of having T_m as a graphed input, I would like it to come in as data from a file. I have tried creating a .csv file with two columns, month and temperature and loading it in through the table command on the equation dialogue box. However I do not know what to write in the Equation box. At the moment it says table(). if I add 'temperature' or 'month' in the brackets it complains that these parameters do not exist in the model.
I've just started using Simile. I'm writing some example models for a modelling course I'm giving to biologists.
To make the models look more visually appealing to the students (and for no other reason) I thought I'd add an image for the background of a submodel.
This works, and I can save the model, but when I try to open the file by double clicking A window appears with the message "Co-ordinating model information", and if I open Simile and then open the model I get the error "Simile encountered an unexpected problem:
invalid command name "backgnd0".
I have a similar problem to the one expose by Lora on Mon, 13/03/2006 - 16:15,
I want to apply the "delay" function to an array variable (A), but unlike Lora I want to delay variable A by a numer of time steps equal to the value of a second variable (B), so the "last" function is not suitable in for me.
I tried to apply the following equation: C = delay([A],B)
I am trying to run models in Simile 4.4p1 under MS Vista. I must specify that my computer is in Japanese language.
The installation went fine, creating the model too, but when I try to run it, I get the following error:
An exception occurred while building this model. It generated this message: existence_error(open(C:/Users/kashim/My Documents/My Simile files/sim/Desktop1/model.cpp,write,_224898),1,file,c:/users/kashim/my documents/my simile files/sim/desktop1/model.cpp,).
I've been looking a bit at the order of evaluation of equations in various System Dynamics software. As far as I can tell the three systems I'm looking at (Simile, Vensim, Eccosim) are all different:
Vensim: Variables, then Flows, then Levels Eccosim: Flows then Levels then Variables Simile: Levels before Flows, with Variables I think mixed in depending on their dependencies
