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  • Users: Marco83
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  1. Marco83

    Non linear solver

    In a time integration cycle I need to solve a non linear algebraic equation. I know that fsolve can easily do it but I have two problems with it. 1) At each time step fsolve displays (and consequently prints on the output file): Optimization terminated: first-order optimality is less than...
  2. Marco83

    Cell array in FORTRAN90

    Hello, I wrote a molecular dynamics code in matlab and now I want to translate it into FORTRAN90 to speed up the computational procedure. The problem is that in my program I use a cell array. In every cell of the cell array I have a vector. The dimension of these vectors changes at every time...
  3. Marco83

    how to save a cell array

    I have a problem saving a cell array. r is a cell array organized as a column containing vectors of different length. I tried to use the command: dlmwrite('r.m',r) but Matlab says that it cannot convert it into a matrix. I understand the problem but I don't know how to solve it. Thanks
  4. Marco83

    Statistical distributions

    The question is about the Rayleigh random distribution. If I use the command v=b^2*raylpdf(x,b) with x=[0:0.1:1000] and b=249 I obtain a maxwellian distribution for the velocity v. If now I want to do the same thing with the random generator raylrnd using the command v(i)=b^2*raylrnd(b) into a...

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