We define the function to convert the R matrix to Python's format: # Converts matrix in R to Python's format We have created a SymPy variable for each element of P, but we haven't defined the symbolic matrix as yet. The output of Var is the string "P11" which we store in P.Īt this time, we have defined an R matrix P where P is given by: For example, when i = j = 1, we will be creating the Sympy variable P11. Specifically, for each element of the matrix P, create a SymPy variable for this element by doing Var(paste0("P", i, j)). I have just taken your code and adjusted it slightly. P = Var(paste0("P", i, j)) # Declare variable in matrix first Let's first start with defining the matrix P in R: library(rSymPy) When I did this recently, I ended up writing a function to convert R matrices to the format required for Python (see the 2x2 matrix given in the example on page 3 of ). (3) R - Sym() each element separately -> Problem Need Help Here! Moreover I would ask for a suggestion how to Sym() a single element of the matrix P in R as in Matlab. (3) Matlab - sym() each element separately -> OK I need suggestions on how to do this correctly and get the same output as, for example, in (2) Matlab. (2) R - Multiply Symbolic Matrix -> Problem sympy("P * P")ĭoes not work. (1) R - Get Symbolic Matrix -> OK library(rSymPy) (1) Matlab - Generate Symbolic Matrix -> OK P = sym('P%d%d', ) I then want to use this matrix for multiplication (with itself and other matrices) and potentially perform also other operations. In this example I wish to generate a Symbolic transition probability matrix "P", which is say 5 x 5, and has elements P11, P12., P55. To do this in Matlab I need the 'Symbolic Toolbox'. I am looking for suggestions how to do this in R and get a similar output as in Matlab. I am failing to appropriately work with a Symbolic Matrix in R, with both rSymPy and Ryacas.
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