Dear all, I like to calculate the conformation tensor for a mass of a short polymer. The conformation tensor is defined as c_ij = 3* (<Re_i * Re_j> / <(Re_bulk)^2>), in which Re_i and Re_j are the Cartesian components of the Re as the end-to-end vector. Several gmx options are available to calculate the end-to-end distance but not the end-to-end vector. I wonder if there is a gmx tool to either directly calculate to conformation tensor or the end-to-end vector to extract the x and y directions of that vector later on?
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