1190201119
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1 year ago I have met the same question, and I solved it. You should change your Mathematica version<13.1
Every time when I run "frost_addpath" the first time, it will fail and say something about symbol "BlockDiagonalMatrix", both defined in frost and system builtin, (I'm not sure, because I don't familiar with Mathematica)see https://reference.wolfram.com/language/ref/BlockDiagonalMatrix.html. So I used version 13.0.1, the problem disappeard.
Hi, I'm trying to get Cassie's dynamics Model. I followed the steps, but I get the following error message ¿What could I be doing wrong? 错误使用 eval_math (第 46 行) The evaluation of Mathematica expression failed.
出错 SymExpression (第 91 行) eval_math([obj.s '=' obj.f ';']);
出错 eval_math_fun (第 53 行) ret = SymExpression(fstr,varargin{:});
出错 RobotLinks/configureDynamics (第 44 行) De{i} = eval_math_fun('InertiaMatrixByLink',[links(i),{obj.numState}]);
出错 model_gen (第 36 行) cassie.configureDynamics('DelayCoriolisSet',false);