# Size of variable arrays: sizeAlgebraic = 17 sizeStates = 13 sizeConstants = 38 from math import * from numpy import * def createLegends(): legend_states = [""] * sizeStates legend_rates = [""] * sizeStates legend_algebraic = [""] * sizeAlgebraic legend_voi = "" legend_constants = [""] * sizeConstants legend_voi = "t in component all (s)" legend_states[0] = "Ca in component all (uM)" legend_algebraic[10] = "L in component all (uM)" legend_constants[0] = "Ls in component all (uM)" legend_constants[1] = "ts in component all (s)" legend_states[1] = "Gd in component all (per_um2)" legend_states[2] = "Gt in component all (per_um2)" legend_states[3] = "R in component all (per_um2)" legend_states[4] = "Rl in component all (per_um2)" legend_states[5] = "Rg in component all (per_um2)" legend_states[6] = "Rlg in component all (per_um2)" legend_states[7] = "Rlgp in component all (per_um2)" legend_states[8] = "IP3 in component all (uM)" legend_constants[2] = "PIP2 in component all (per_um2)" legend_states[9] = "Pc in component all (per_um2)" legend_states[10] = "Pcg in component all (per_um2)" legend_states[11] = "P in component all (per_um2)" legend_states[12] = "Pg in component all (per_um2)" legend_algebraic[11] = "J1 in component all (per_um2_per_s)" legend_constants[3] = "kf1 in component all (per_uM_per_s)" legend_constants[31] = "kr1 in component all (per_s)" legend_constants[4] = "Kd1 in component all (uM)" legend_algebraic[12] = "J2 in component all (per_um2_per_s)" legend_constants[5] = "kf2 in component all (um2_per_s)" legend_constants[32] = "kr2 in component all (per_s)" legend_constants[6] = "Kd2 in component all (per_um2)" legend_algebraic[13] = "J3 in component all (per_um2_per_s)" legend_constants[7] = "kf3 in component all (um2_per_s)" legend_constants[8] = "kr3 in component all (per_s)" legend_algebraic[14] = "J4 in component all (per_um2_per_s)" legend_constants[9] = "kf4 in component all (per_uM_per_s)" legend_constants[33] = "kr4 in component all (per_s)" legend_constants[10] = "Kd4 in component all (uM)" legend_algebraic[15] = "J5 in component all (per_um2_per_s)" legend_constants[11] = "kf5 in component all (per_s)" legend_algebraic[16] = "J6 in component all (per_um2_per_s)" legend_constants[12] = "kf6 in component all (per_s)" legend_algebraic[9] = "J7 in component all (per_um2_per_s)" legend_constants[13] = "kf7 in component all (per_s)" legend_algebraic[7] = "J8 in component all (per_um2_per_s)" legend_constants[14] = "kf8 in component all (per_uM_per_s)" legend_constants[15] = "kr8 in component all (per_s)" legend_algebraic[8] = "J9 in component all (per_um2_per_s)" legend_constants[16] = "kf9 in component all (um2_per_s)" legend_constants[17] = "kr9 in component all (per_s)" legend_algebraic[6] = "J10 in component all (per_um2_per_s)" legend_constants[18] = "kf10 in component all (um2_per_s)" legend_constants[19] = "kr10 in component all (per_s)" legend_algebraic[4] = "J11 in component all (per_um2_per_s)" legend_constants[20] = "kf11 in component all (per_uM_per_s)" legend_constants[34] = "kr11 in component all (per_s)" legend_constants[21] = "Kd11 in component all (uM)" legend_algebraic[2] = "J12 in component all (per_um2_per_s)" legend_constants[22] = "kf12 in component all (per_s)" legend_algebraic[0] = "J13 in component all (per_um2_per_s)" legend_constants[23] = "kf13 in component all (per_s)" legend_algebraic[3] = "J14 in component all (per_um2_per_s)" legend_constants[24] = "kf14 in component all (per_s)" legend_constants[25] = "Km14 in component all (uM)" legend_algebraic[5] = "J15 in component all (per_um2_per_s)" legend_constants[26] = "kf15 in component all (per_s)" legend_constants[27] = "Km15 in component all (uM)" legend_algebraic[1] = "J16 in component all (uM_per_s)" legend_constants[28] = "kf16 in component all (per_s)" legend_constants[37] = "Cpc in component all (uM_um2)" legend_constants[35] = "Cc in component all (uM)" legend_constants[36] = "Cp in component all (per_um2)" legend_constants[29] = "Vc in component all (um3)" legend_constants[30] = "Rpc in component all (per_um)" legend_rates[11] = "d/dt P in component all (per_um2)" legend_rates[12] = "d/dt Pg in component all (per_um2)" legend_rates[9] = "d/dt Pc in component all (per_um2)" legend_rates[10] = "d/dt Pcg in component all (per_um2)" legend_rates[8] = "d/dt IP3 in component all (uM)" legend_rates[1] = "d/dt Gd in component all (per_um2)" legend_rates[2] = "d/dt Gt in component all (per_um2)" legend_rates[0] = "d/dt Ca in component all (uM)" legend_rates[3] = "d/dt R in component all (per_um2)" legend_rates[4] = "d/dt Rl in component all (per_um2)" legend_rates[5] = "d/dt Rg in component all (per_um2)" legend_rates[7] = "d/dt Rlgp in component all (per_um2)" legend_rates[6] = "d/dt Rlg in component all (per_um2)" return (legend_states, legend_algebraic, legend_voi, legend_constants) def initConsts(): constants = [0.0] * sizeConstants; states = [0.0] * sizeStates; states[0] = 0.1 constants[0] = 0.1 constants[1] = 10 states[1] = 10000 states[2] = 0 states[3] = 13.9 states[4] = 0 states[5] = 5.06 states[6] = 0 states[7] = 0 states[8] = 0.015 constants[2] = 4000 states[9] = 9.09 states[10] = 0 states[11] = 90.9 states[12] = 0 constants[3] = 0.0003 constants[4] = 3e-5 constants[5] = 2.75e-4 constants[6] = 27500 constants[7] = 1 constants[8] = 0.001 constants[9] = 0.3 constants[10] = 3e-5 constants[11] = 0.0004 constants[12] = 1 constants[13] = 0.15 constants[14] = 0.0167 constants[15] = 0.0167 constants[16] = 0.0042 constants[17] = 1 constants[18] = 0.042 constants[19] = 1 constants[20] = 0.0334 constants[21] = 0.1 constants[22] = 6 constants[23] = 6 constants[24] = 0.444 constants[25] = 19.8 constants[26] = 3.8 constants[27] = 5 constants[28] = 1.25 constants[29] = 2550 constants[30] = 4.61 constants[31] = constants[3]*constants[4] constants[32] = constants[5]*constants[6] constants[33] = constants[9]*constants[10] constants[34] = constants[20]*constants[21] constants[35] = 1.00000/(constants[29]*602.200) constants[36] = 1.00000/(constants[29]*constants[30]) constants[37] = constants[35]/constants[36] return (states, constants) def computeRates(voi, states, constants): rates = [0.0] * sizeStates; algebraic = [0.0] * sizeAlgebraic algebraic[3] = (constants[24]*states[9]*constants[2])/(constants[25]/constants[37]+constants[2]) algebraic[5] = (constants[26]*states[10]*constants[2])/(constants[27]/constants[37]+constants[2]) algebraic[1] = constants[28]*states[8] rates[8] = constants[37]*(algebraic[3]+algebraic[5])-algebraic[1] algebraic[6] = constants[18]*states[9]*states[2]-constants[19]*states[10] algebraic[4] = constants[20]*states[12]*states[0]-constants[34]*states[10] algebraic[2] = constants[22]*states[10] rates[10] = (algebraic[6]+algebraic[4])-algebraic[2] algebraic[7] = constants[14]*states[11]*states[0]-constants[15]*states[9] rates[9] = (algebraic[7]+algebraic[2])-algebraic[6] rates[0] = constants[37]*-1.00000*(algebraic[7]+algebraic[4]) algebraic[8] = constants[16]*states[11]*states[2]-constants[17]*states[12] algebraic[0] = constants[23]*states[12] rates[11] = algebraic[0]-(algebraic[8]+algebraic[7]) rates[12] = algebraic[8]-(algebraic[4]+algebraic[0]) algebraic[10] = custom_piecewise([less(voi , constants[1]+0.150000) & greater_equal(voi , constants[1]), constants[0]/(1.00000+exp(-80.0000*((voi-constants[1])-0.0500000))) , greater_equal(voi , constants[1]+0.150000), constants[0] , True, 0.00000]) algebraic[11] = constants[3]*states[3]*algebraic[10]-constants[31]*states[4] algebraic[12] = constants[5]*states[3]*states[1]-constants[32]*states[5] rates[3] = -1.00000*(algebraic[11]+algebraic[12]) algebraic[13] = constants[7]*states[4]*states[1]-constants[8]*states[6] algebraic[9] = constants[13]*states[2] rates[1] = (algebraic[9]+algebraic[0]+algebraic[2])-(algebraic[12]+algebraic[13]) algebraic[14] = constants[9]*algebraic[10]*states[5]-constants[33]*states[6] rates[5] = algebraic[12]-algebraic[14] algebraic[15] = constants[11]*states[6] rates[7] = algebraic[15] algebraic[16] = constants[12]*states[6] rates[2] = algebraic[16]-(algebraic[9]+algebraic[8]+algebraic[6]) rates[4] = (algebraic[11]+algebraic[16])-algebraic[13] rates[6] = ((algebraic[13]-algebraic[15])+algebraic[14])-algebraic[16] return(rates) def computeAlgebraic(constants, states, voi): algebraic = array([[0.0] * len(voi)] * sizeAlgebraic) states = array(states) voi = array(voi) algebraic[3] = (constants[24]*states[9]*constants[2])/(constants[25]/constants[37]+constants[2]) algebraic[5] = (constants[26]*states[10]*constants[2])/(constants[27]/constants[37]+constants[2]) algebraic[1] = constants[28]*states[8] algebraic[6] = constants[18]*states[9]*states[2]-constants[19]*states[10] algebraic[4] = constants[20]*states[12]*states[0]-constants[34]*states[10] algebraic[2] = constants[22]*states[10] algebraic[7] = constants[14]*states[11]*states[0]-constants[15]*states[9] algebraic[8] = constants[16]*states[11]*states[2]-constants[17]*states[12] algebraic[0] = constants[23]*states[12] algebraic[10] = custom_piecewise([less(voi , constants[1]+0.150000) & greater_equal(voi , constants[1]), constants[0]/(1.00000+exp(-80.0000*((voi-constants[1])-0.0500000))) , greater_equal(voi , constants[1]+0.150000), constants[0] , True, 0.00000]) algebraic[11] = constants[3]*states[3]*algebraic[10]-constants[31]*states[4] algebraic[12] = constants[5]*states[3]*states[1]-constants[32]*states[5] algebraic[13] = constants[7]*states[4]*states[1]-constants[8]*states[6] algebraic[9] = constants[13]*states[2] algebraic[14] = constants[9]*algebraic[10]*states[5]-constants[33]*states[6] algebraic[15] = constants[11]*states[6] algebraic[16] = constants[12]*states[6] return algebraic def custom_piecewise(cases): """Compute result of a piecewise function""" return select(cases[0::2],cases[1::2]) def solve_model(): """Solve model with ODE solver""" from scipy.integrate import ode # Initialise constants and state variables (init_states, constants) = initConsts() # Set timespan to solve over voi = linspace(0, 10, 500) # Construct ODE object to solve r = ode(computeRates) r.set_integrator('vode', method='bdf', atol=1e-06, rtol=1e-06, max_step=1) r.set_initial_value(init_states, voi[0]) r.set_f_params(constants) # Solve model states = array([[0.0] * len(voi)] * sizeStates) states[:,0] = init_states for (i,t) in enumerate(voi[1:]): if r.successful(): r.integrate(t) states[:,i+1] = r.y else: break # Compute algebraic variables algebraic = computeAlgebraic(constants, states, voi) return (voi, states, algebraic) def plot_model(voi, states, algebraic): """Plot variables against variable of integration""" import pylab (legend_states, legend_algebraic, legend_voi, legend_constants) = createLegends() pylab.figure(1) pylab.plot(voi,vstack((states,algebraic)).T) pylab.xlabel(legend_voi) pylab.legend(legend_states + legend_algebraic, loc='best') pylab.show() if __name__ == "__main__": (voi, states, algebraic) = solve_model() plot_model(voi, states, algebraic)