[Tyler-g-hudson]

The documentation in the default runconfig currently isn't clear about how the sas_output_file input maps to the set of output filenames in InSAR. The wording is currently:

            # In INSAR mode, GUNW, GOFF, RIFG, ROFF, and RUNW will be prepended
            # to sas_output_file

Which is technically true but not specific. What actually happens is that a lambda splits sas_output_file into its' directory part and filename part, e.g. outputs/ and product.h5, then prepends the product name(s) to the filename part with an underscore and recombines it all together e.g. outputs/GUNW_product.h5, outputs/RIFG_product.h5 and so on.

The code that does this is in h5_prep.py:

    # dict keying product type to dict of product type key(s) to output(s)
    # following lambda creates subproduct specific output path
    insar_path = lambda out_path, product: \
        os.path.join(os.path.dirname(out_path),
                     product + '_' + os.path.basename(out_path))

[xhuang-jpl]

Thanks @Tyler-g-hudson , LGTM