Create Model Parameters by Code

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Leo L6 asked Dec 23, '22 IEThai commented Nov 15, '24

Create Model Parameters by Code

Hello,

I'm looking for a way to create model parameters by code. One way I see this working is a script that will take in a global table with lower bound and upper bound information and generate a corresponding parameter table that can be used in the experimenter.

The first thing I thought of was to create a table class with the Parameter table and use the table methods to set parameters/parameter table size like so:

However, this does not seem to work. Is the table class able to be used here or am I approaching this the wrong way?

Thank you for any help!!

Software Version:

FlexSim 22.0.0

flexscript parameters flexscript coding parameters table table class

1671764164030.png (11.1 KiB)

5 |100000

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Answer 1 · 2022-12-23T13:22:17Z

Jason Lightfoot answered Dec 23, '22 IEThai commented Nov 15, '24

Here's the working syntax for 22.0 - since you're accessing the tree structure, note that it may change in a future version:

string pTableName="Parameters";
Object paramT=Model.find("Tools/ParameterTables/"+pTableName);
Table params=paramT.find(">variables/parameters");
treenode newParam=function_s(paramT,"addParameter");
int row=newParam.rank;
params[row]["Name"]="MyNewParameter";
params[row]["Value"]=5;
params[row]["Display Units"]="cms";
params[row]["Description"]="test parameter";
treenode attrHolder=params.cell(row,"Value");
attrHolder.subnodes["type"].value=CV_TYPE_CONTINUOUS;  //also CV_TYPE_DISCRETE, INTEGER, BINARY, EXPRESSION, OPTION, PASSTHROUGH
attrHolder.subnodes["warningLevel"].value=2;
attrHolder.subnodes["lowerBound"].value=1;
attrHolder.subnodes["upperBound"].value=10;
attrHolder.subnodes["stepSize"].value=0.5;
attrHolder.subnodes["sequenceLength"].value=10;
attrHolder.subnodes["reference"].value=Model.find("Queue1");
attrHolder.subnodes["isProxy"].value=0;
// optionally add onSet
treenode onSet=function_s(attrHolder,"assertEvent","OnSet");
onSet=function_s(attrHolder,"assertEventWithCode","OnSet");
onSet.value+="// Your own set code here";
buildnodeflexscript(onSet);

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Leo L6 commented · Dec 23, 2022 at 06:46 PM

Thank you!, worked perfectly

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Hoang Nk commented · Oct 08 at 02:12 PM

Hi,

I tried this code and it works superbly, however, what kind of function_s can I use to remove some/all of the existing parameters? For context, I would like to clear the model parameter everytime the model is On Reset, and then a new parameter table would be created On Simulation Start.

Many thanks :)

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Jason Lightfoot ♦♦ Hoang Nk commented · Oct 08 at 03:54 PM

The parameter tables are designed to persist between resets. For automating parameter value changes you use the experimenter to define scenario comparison or optimization jobs.

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IEThai commented · Nov 14 at 08:00 AM

Hi Mr.Josn @Jason Lightfoot
I've been able to do it as you mentioned, but if I want to remove it, what should I do using code commands? Please help me.

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Jason Lightfoot ♦♦ IEThai commented · Nov 14 at 08:27 AM

To remove row 2 for example:

string pTableName="Parameters";
Object paramT=Model.find("Tools/ParameterTables/"+pTableName);
Table params=paramT.find(">variables/parameters");
params.deleteRow(2);

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IEThai Jason Lightfoot ♦♦ commented · Nov 15 at 02:48 AM

Thank you so much! Your code really helped me.

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