Inconsistent reporting of number of spectral points

[dcmvdbekerom]

🐛 Describe the bug

When the spectral axis is generated it is done so with wmax inclusive; this leads to numbers of spectral points such as 150001. This is also the number you get when printing len(sf.wavenumber). However, s.conditions['spectral_points'] yields the exclusive answer, i.e. 150000. It would be nice if these values were consistent.

I used the following script:

from radis import SpectrumFactory

sf = SpectrumFactory(
    2150,
    2450,  # cm-1
    molecule="CO2",
    isotope="1,2,3",
    wstep=0.002,
)

sf.fetch_databank("hitemp")

s = sf.eq_spectrum(
    Tgas=1100.0,  # K
    pressure=1,  # bar
    mole_fraction=0.8,
    path_length=0.2,  # cm
)

💡 Possible solutions

Wouldn't it be better to use spectral axes with the wmax exclusive?

Alternatively, when updating the sf.conditions['spectral_points'], rather than calculating the number of points from input parameters the integer value should be read from elsewhere.

🎲 Radis version

0.14

💻 Operating system

Windows