FUNCTION: GET_SOURCE_URL_LIST url_out=get_source_url_list(url_in, xmldir, xmlfile) PURPOSE: Gets URLs of data files from the metadata database. KEYWORDS: url_in = Query in the OpenSearch format xmldir = Directory where XML file will be downloaded to. xmlfile = Returned XML file for search result url_out = URLs of data files returned by the Metadata databese EXAMPLE: url_in='http://search.iugonet.org/iugonet/open-search/request?'+$ 'query=nipr_1sec_fmag_syo_20100101_v02.cdf' url_out=get_source_url_list(url_in, './', 'tmp.xml') Written by Y.-M. Tanaka, Sep. 15, 2011 (ytanaka at nipr.ac.jp)