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Dataset Title:	Volvo Ocean Race 2017-2018
Institution:	The Ocean Race (Dataset ID: Volvo_OceanRace_17_18)
Range:	longitude = -179.99992 to 192.82703°E, latitude = -57.717255 to 96.413506°N, time = 2017-11-05T14:00:00Z to 2018-06-24T08:45:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

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Server-side Functions

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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  boat_name {
    String long_name "boat_name";
  }
  TWS {
    Float32 actual_range 0.0, 127.75;
    String long_name "True Wind Speed";
  }
  TWD {
    Float32 actual_range 0.0, 511.0;
    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 1.5098904e+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 time_precision "1970-01-01T00:00:00Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  AIRTEMP {
    Float32 actual_range 0.0, 53.0;
    String long_name "Air Temperature";
  }
  SEATEMP {
    Float32 actual_range 0.0, 53.0;
    String long_name "Sea Surface Temperature";
  }
  BAROPRESS {
    Float32 actual_range 967.5, 1050.1;
    String long_name "Air Pressure";
  }
  COG {
    Float32 actual_range 0.0, 511.0;
    String long_name "Course Over Ground";
  }
  SOG {
    Float32 actual_range 0.0, 63.0;
    String long_name "Speed Over Ground";
  }
  HEADING {
    Float32 actual_range 0.0, 511.0;
    String long_name "Heading";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "NODC.Webmaster@noaa.gov";
    String creator_name "The Ocean Race";
    String creator_url "https://www.nodc.noaa.gov/";
    Float64 Easternmost_Easting 192.827019444;
    String featureType "Point";
    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 
"2024-04-28T00:59:32Z (local files)
2024-04-28T00:59:32Z https://erddap.emodnet-physics.eu/tabledap/Volvo_OceanRace_17_18.das";
    String infoUrl "https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.nodc:0170967";
    String institution "The Ocean Race";
    String keywords "airtemp, baropress, COG, course, heading, latitude, longitude, ocean, race, seatemp, SOG, speed, time, timestamp, twd, tws, volvo";
    String license "Creative Commons Attribution Share-Alike http://www.opendefinition.org/licenses/cc-by-sa";
    Float64 Northernmost_Northing 96.413508333;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -57.717255556;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "boat_name";
    String summary "Surface oceanographic and meteorological data collected in situ from the Leg 0-4 and 6-12 of the Volvo Ocean Race 2017/18. The oceanographic data were collected onboard \"Turn the Tide on Plastic\" and team \"AkzoNobel\". The meteorological data were collected by Dongfeng Race Team, Team Brunel, Vestas 11th Hour Racing, Sun Hung Kai Scallywag, Turn the Tide on Plastic, Mapfre and Team AkzoNobel.";
    String time_coverage_end "2018-06-24T08:45:00Z";
    String time_coverage_start "2017-11-05T14:00:00Z";
    String title "Volvo Ocean Race 2017-2018";
    Float64 Westernmost_Easting -179.999922222;
  }
}

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 (external link)

Data Access Protocol (DAP) (external link)

and its selection constraints (external link)

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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