Example of using RADIS from Matlab

All methods of RADIS can be accessed using py.radis followed by the method to be accessed

In the lines below, we emulate Matlab syntax to generate the example on this online documentation, so that lines be copied directly into Matlab.

See the real Matlab file : https://github.com/radis/radis/blob/develop/examples/calc_matlab.m See https://github.com/radis/radis/pull/547 for more details and screenshots of Radis running in Matlab directly

from radis.test.utils import EmulateMatlab  # this line is not needed in Matlab

py = EmulateMatlab()  # this line is not needed in Matlab

All lines below can be copied in Matlab directly :

s = py.radis.calc_spectrum(
    1900,
    2300,
    molecule="CO",
    isotope="1,2,3",
    pressure=1.01325,
    Tgas=700,
    mole_fraction=0.1,
    path_length=1,
    databank="hitran",
)
s.apply_slit(0.5, "nm")

--------------------------------------------------------------------------------
CO - HITRAN - Downloading database
--------------------------------------------------------------------------------

Download:
- All files already downloaded.

Caching to HDF5/H5 format:
- All files already cached.
0.02s - Loaded database
Calculating Equilibrium Spectrum
Physical Conditions
----------------------------------------
   Tgas                 700 K
   isotope              1,2,3
   medium               air
   mole_fraction        0.1
   path_length          1 cm
   pressure             1.01325 bar
   self_absorption      True
   species              CO
   state                X
   wavenum_max          2300.0000 cm-1
   wavenum_min          1900.0000 cm-1
Computation Parameters
----------------------------------------
   Tref                 296 K
   add_at_used          numpy
   broadening_method    voigt_poly
   cutoff               1e-27 cm-1/(#.cm-2)
   dbformat             hitran
   dbpath               /home/docs/.radisdb/hitran/CO.h5
   diluent              air
   folding_thresh       1e-06
   include_neighbouring_lines  True
   isatom               False
   isneutral            None
   lbfunc               None
   memory_mapping_engine  auto
   neighbour_lines      0 cm-1
   optimization         simple
   parsum_mode          full summation
   pfsource             default
   potential_lowering   None
   pseudo_continuum_threshold  0
   sparse_ldm           True
   truncation           50 cm-1
   waveunit             cm-1
   wstep                0.01 cm-1
   zero_padding         40002
----------------------------------------
0.03s - Spectrum calculated

<radis.spectrum.spectrum.Spectrum object at 0x79deeb237a30>