Output Formats

ROOT

Katydid has a variety of ROOT writers:

• "basic-root-writer"

HDF5

Katydid supports writing data to the HDF5 file format. The data are structured according to their type, so that the HDF5 file will have the following (data dependent) structure:

• Spectra - stored in /spectra
  • Frequency Spectra - stored in /spectra/frequency
    • Polar frequency spectra are called PolarFS_N where N is the number of the slice which the frequency spectrum was calculated over. The data are a 2MxN array, where N is equal to half the length of the original slice plus one, and M is equal to the number of components in the original time series data. In memory, to retrieve frequency bin i from component j, data[j][i] is the absolute value, and data[j+i][i] is the phase (argument).
• Time Series - stored in /time_series
• Candidates - stored in /candidates