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Add magnetic pressure data reducer #277

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Sep 13, 2024
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Add magnetic pressure data reducer #277

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77429cc
Add magnetic pressure data reducer
JonasSuni Sep 13, 2024
3e3e081
Change reducer name to p_magnetic and bug fix
JonasSuni Sep 13, 2024
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10 changes: 9 additions & 1 deletion pyVlsv/reduction.py
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Original file line number Diff line number Diff line change
Expand Up @@ -609,7 +609,11 @@ def gyrotropy(variables):
Q = 1 - 4 * I2 / ( (I1 - Ppar)*(I1 + 3* Ppar) )
return Q


def MagneticPressure( variables ):
''' Data reducer for finding the magnetic pressure
'''
Magneticfield = variables[0]
return np.sum(np.asarray(Magneticfield)**2,axis=-1) / 2.0 / mu_0

def beta( variables ):
''' Data reducer for finding the plasma beta
Expand Down Expand Up @@ -923,6 +927,8 @@ def makelambda(index):
datareducers["pdyn"] = DataReducerVariable(["v", "rhom"], Pdyn, "Pa", 1, latex=r"$P_\mathrm{dyn}$",latexunits=r"$\mathrm{Pa}$")
datareducers["pdynx"] = DataReducerVariable(["v", "rhom"], Pdynx, "Pa", 1, latex=r"$P_\mathrm{dyn,x}$",latexunits=r"$\mathrm{Pa}$")

datareducers["p_magnetic"] = DataReducerVariable(["b"], MagneticPressure, "Pa", 1, latex=r"$P_\mathrm{mag}$",latexunits=r"$\mathrm{Pa}$")

datareducers["poynting"] = DataReducerVariable(["e", "b"], Poynting, "W/m2", 3, latex=r"$S$", latexunits=r"\mathrm{W}\,\mathrm{m}^{-2}$")
datareducers["hallterm"] = DataReducerVariable(["e", "v", "b"], Hallterm, "V/m", 3, latex=r"$E_\mathrm{Hall}$", latexunits=r"\mathrm{V}\,\mathrm{m}^{-1}$")
datareducers["firstadiabatic"] = DataReducerVariable(["tperpendicular","b"], firstadiabatic, "K/T", 1, latex=r"$T_\perp B^{-1}$",latexunits=r"$\mathrm{K}\,\mathrm{T}^{-1}$")
Expand Down Expand Up @@ -1136,6 +1142,8 @@ def makelambda(index):
v5reducers["vg_pdyn"] = DataReducerVariable(["vg_v", "vg_rhom"], Pdyn, "Pa", 1, latex=r"$P_\mathrm{dyn}$",latexunits=r"$\mathrm{Pa}$")
v5reducers["vg_pdynx"] = DataReducerVariable(["vg_v", "vg_rhom"], Pdynx, "Pa", 1, latex=r"$P_\mathrm{dyn,x}$",latexunits=r"$\mathrm{Pa}$")

v5reducers["vg_p_magnetic"] = DataReducerVariable(["vg_b_vol"], MagneticPressure, "Pa", 1, latex=r"$P_\mathrm{mag}$",latexunits=r"$\mathrm{Pa}$")

v5reducers["vg_di"] = DataReducerVariable(["proton/vg_rho"], ion_inertial, "m", 1, latex=r"$d_\mathrm{i}$",latexunits=r"$\mathrm{m}$")

v5reducers["vg_pressure"] = DataReducerVariable(["vg_ptensor_diagonal"], Pressure, "Pa", 1, latex=r"$P$", latexunits=r"$\mathrm{Pa}$")
Expand Down
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