class_docstr: Reader VGAC data.
class_docstr_tok: ["Reader","VGAC","data","."]
docstr: Convert radances to brightness temperatures.
docstr_tok: ["Convert","radances","to","brightness","temperatures","."]
code: def convert_to_bt(self, data, data_lut, scale_factor):
      """Convert radances to brightness temperatures."""
      x = np.arange(0, len(data_lut))
      y = data_lut
      scaled_data = data / scale_factor
      brightness_temperatures = xr.DataArray(
          np.interp(scaled_data, xp=x, fp=y),
          coords=data.coords,
          attrs=data.attrs,
      )
      return brightness_temperatures
  
file_path: satpy/satpy/readers/viirs_vgac_l1c_nc.py
imports: import logging
  from datetime import datetime
  import numpy
  import xarray
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 3 for calling the VGACFileHandler obj's underlying member method code with example usage: obj.convert_to_bt(data, data_lut, scale_factor) and returns: brightness_temperatures