>mrvdl: Merged Day l-nu Diagram Image (Power)
Produce the L-nu diagrams from the power spectra.
Dimensionally, the x-axis is the spherical harmonic degree, L, and the y-axis is frequency. The FITS header keyword CD1_1, gives the conversion factor (microHz/pixels) for the y-axis.
Steps involved: 1. Calculate the power spectra of a GONG time series image with pseries. lpar pseries (type_output = "gong") Output data type (fft|power|gong) (pad = "none") Zero padding (none|1st|2nd) (debias = yes) Debias time series prior to FFT (use_gapfill = yes) Used gap-filled data? (do_phase = no) Output phase spectra (window = "none") Window (bartlett|hamming|hanning|parzen|welch|n output mrvdpYYMMDDd[000-200]