ERDDAP > tabledap > Data Access Form

Dataset Title:	Met Ocean Data from Volvo Ocean Race
Institution:	Volvo Ocean Race   (Dataset ID: volvo_race)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Subset | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum    or a List of Values	Maximum
wmo_id (WMO platform ID)	!= =~ <= >= = < >		!= =~ <= >= = < >		"2ZRJHZS" "9FPJSPW" "EQSGMDN" "HPUSXWY" "HQDCZTW" "NHK2X3Z" "PWTBBSZ"
TWS (True Wind Speed)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	127.75
TWD (True Wind Direction)	!= =~ <= >= = < >		!= =~ <= >= = < >		0	511
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		-57.717255556	96.413508333
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-179.999922222	192.827019444
time (TIMESTAMP, UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2017-10-22T14:00:00Z	2018-06-24T08:45:00Z
AIRTEMP (Air Temperature)	!= =~ <= >= = < >		!= =~ <= >= = < >		0	53
SEATEMP (Sea Temperature)	!= =~ <= >= = < >		!= =~ <= >= = < >		0	53
BAROPRESS (Barometric Pressure)	!= =~ <= >= = < >		!= =~ <= >= = < >		967.5	1050.1

 

Server-side Functions

distinct()

orderBy orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" wmo_id TWS TWD latitude longitude time AIRTEMP SEATEMP BAROPRESS wmo_id TWS TWD latitude longitude time AIRTEMP SEATEMP BAROPRESS wmo_id TWS TWD latitude longitude time AIRTEMP SEATEMP BAROPRESS wmo_id TWS TWD latitude longitude time AIRTEMP SEATEMP BAROPRESS wmo_id TWS TWD latitude longitude time AIRTEMP SEATEMP BAROPRESS ")

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .dataTable - A JSON file formatted for use with the Google Visualization client library (Google Charts). .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriCsv - Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .geoJson - Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. .graph - View a Make A Graph web page. .help - View a web page with a description of tabledap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncCF - Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). .ncCFHeader - View the UTF-8 header (the metadata) for the .ncCF file. .ncCFMA - Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). .ncCFMAHeader - View the UTF-8 header (the metadata) for the .ncCFMA file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). .subset - View an HTML form which uses faceted search to simplify picking subsets of the data. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .kml - View a .kml file, suitable for Google Earth. .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

(Documentation / Bypass this form )
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  wmo_id {
    String cf_role "trajectory_id";
    String ioos_category "Identifier";
    String long_name "WMO platform ID";
  }
  TWS {
    Float32 actual_range 0.0, 127.75;
    String long_name "True Wind Speed";
  }
  TWD {
    Int16 actual_range 0, 511;
    String long_name "True Wind Direction";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -57.717255556, 96.413508333;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -179.999922222, 192.827019444;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "LONG";
    String standard_name "longitude";
    String units "degrees_east";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5086808e+9, 1.5298299e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "TIMESTAMP";
    String source_name "TIMESTAMP";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  AIRTEMP {
    String _Unsigned "false";
    Byte actual_range 0, 53;
    String long_name "Air Temperature";
  }
  SEATEMP {
    String _Unsigned "false";
    Byte actual_range 0, 53;
    String long_name "Sea Temperature";
  }
  BAROPRESS {
    Float32 actual_range 967.5, 1050.1;
    String long_name "Barometric Pressure";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Trajectory";
    String cdm_trajectory_variables "wmo_id";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    Float64 Easternmost_Easting 192.827019444;
    String featureType "Trajectory";
    Float64 geospatial_lat_max 96.413508333;
    Float64 geospatial_lat_min -57.717255556;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 192.827019444;
    Float64 geospatial_lon_min -179.999922222;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-04-10T02:38:39Z (local files)
2025-04-10T02:38:39Z https://data.pmel.noaa.gov/generic/erddap/tabledap/volvo_race.html";
    String infoUrl "volvooceanrace.com";
    String institution "Volvo Ocean Race";
    String keywords "airtemp, baropress, data, identifier, latitude, local, longitude, seatemp, source, time, timestamp, twd, tws, vessel, wmo_id";
    String license "These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0).";
    Float64 Northernmost_Northing 96.413508333;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -57.717255556;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String subsetVariables "wmo_id";
    String summary "Met Ocean Data from Volvo Ocean Race";
    String time_coverage_end "2018-06-24T08:45:00Z";
    String time_coverage_start "2017-10-22T14:00:00Z";
    String title "Met Ocean Data from Volvo Ocean Race";
    Float64 Westernmost_Easting -179.999922222;
  }
}

 

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Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP Data Access Protocol (DAP) and its selection constraints.

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

• (easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
• (easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
• (not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.

 

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