SIR reaction-diffusion equation

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Patterns of Patchy Spread in SIR reaction-diffusion equation.
The test case is based on [Petrovskii et al. 2005].
The numerical scheme is :
- Centered order 2 in space,
- IMEX in time
- System are solved thanks fast solver (DCT-II)
The grid is 300x300, the time step is 1e-1.
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would you please share the matlab code of SIR reaction diffusion equation with me

Mst.RaziaSultana-bg