Manual scaling via matlab scripting

[Donatella Simonetti]

Hello,

I'm trying to scale a generic model 2392 manually but I'm having problems getting to the right solution via Matlab script. Should I use the Model class and the function scale to perform the scaling? Or should I create a ScaleTool? In both cases (see below) I get stuck.
Could you please give me a hint on how to proceed?

Via the Model

Code: Select all

Model2 = Model(generic_model);
Model2.initSystem;

% How do I get the states?  How do I define the scaleSet? 
Model2.scale(states,scaleSet, true, mass);
Model2.print(output);

Via ScaleTool

Code: Select all

scale_tool = ScaleTool(scale_template);
% How do I connect the ScaleTool to a specific model to scale?
scale_tool.setPathToSubject(unscaled_model); 
scale_tool.run();

[Thomas Uchida]

This thread might be helpful (Topic 14302): viewtopicPhpbb.php?f=91&t=14302. Several other relevant posts can be found by searching the Forum for "ScaleTool Matlab".

[Donatella Simonetti]

Hi Thomas,

thank you for your reply. Now it's working

I will leave here the working Matlab function:

Code: Select all

 function manual_scaling(scale_template,unscaled_model,mass, output)
% function to plate IMUs on a Osim model by calling OpenSim functions

import org.opensim.modeling.*

% open generic model
Model1 = Model(unscaled_model);
Model1.initSystem;

% create scale tool object from an exixtent template
scale_tool = ScaleTool(scale_template);
scale_tool.setName('scale_model');
scale_tool.setSubjectMass(mass);
%%% ModelPlacer stuff
scale_tool.getMarkerPlacer().setOutputModelFileName(scale_template); %2 of 2, markers
%%% ModelScaler stuff
scale_tool.getModelScaler().setApply(1)
scale_tool.getModelScaler().setOutputModelFileName(scale_template); %1 of 2, scaling
%%% ModelMaker stuff
scale_tool.getGenericModelMaker().setModelFileName(unscaled_model);

% scaling model
scale_tool.getModelScaler().processModel(Model1, unscaled_model, mass)
% print new model
Model1.print(output)

end