A limited THREDDS crawler for programmatically working with the OpeNDAP data offerings from http://oceandata.sci.gsfc.nasa.gov/opendap/

download_direct | Download a direct data access file using 'download.file' |

get_8days | Compute the first or last day of 8-day intervals for a given... |

get_monthdays | Compute the first or last day of the month for a given year.... |

get_seasondays | Compute the first or last day of seasons for a given year.... |

grid_center | Compute the grid x,y locations from longitude and latitude |

grid_delta | Compute the grid delta |

obpgcrawler | obpgcrawler - programmatic access to Ocean Color OpeNDAP... |

obpg_query | A basic query function to retrieve one or more datasets |

query_direct | Query a direct data download webpage such as <URL:... |

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