Interpolation issue: x_new below the range

Hi,

I am trying to conduct a very simple example with Floris. The code is almost identical to the one in the example 08_calc_aep_from_rose_use_class.py https://github.com/NREL/floris/blob/main/examples/08_calc_aep_from_rose_use_class.py. The only difference is that I am using my own wind_rose data, but it has the same structure than the data in the example provided. Every time I execute the sentence:

aep = fi.get_farm_AEP_wind_rose_class(wind_rose=wind_rose)

I get the error:

File "D:\Programas\EntornosA3\wisdem\lib\site-packages\scipy\interpolate\_interpolate.py", line 695, in _evaluate
    below_bounds, above_bounds = self._check_bounds(x_new)

  File "D:\Programas\EntornosA3\wisdem\lib\site-packages\scipy\interpolate\_interpolate.py", line 724, in _check_bounds
    raise ValueError("A value in x_new is below the interpolation "

ValueError: A value in x_new is below the interpolation range.

Does this error suggest something to you? Any ideas?

[Josue9740]

Ok! Simple and effective. Thank you so much!

[Bartdoekemeijer]

I would suggest simply expanding your Cp/Ct tables:, for example, you can add a 0.0 0.0 entry and a 50.0 0.0 entry for both tables, indicating zero power/thrust at 0 m/s and zero power/thrust at 50 m/s. Take a look at the NREL 5MW definition https://github.com/NREL/floris/blob/main/floris/turbine_library/nrel_5MW.yaml as an example.

Cp at 0 m/s: https://github.com/NREL/floris/blob/0c2adf3e702b6427da946a6ba9dbedbea22738be/floris/turbine_library/nrel_5MW.yaml#L11

Ct at 0 m/s: https://github.com/NREL/floris/blob/0c2adf3e702b6427da946a6ba9dbedbea22738be/floris/turbine_library/nrel_5MW.yaml#L63