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Dataset Title:	Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Hurricane Michael (2018) Drifter Data
Institution:	UCSD SIO (Dataset ID: LDL_HurricaneMichael)
Range:	time = 2018-10-08T23:00:00Z to 2018-10-15T23:45:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form

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Constraints	Optional Constraint #1		Optional Constraint #2

Server-side Functions

distinct()

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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 {
  PlatformId {
    String ioos_category "Unknown";
    String long_name "Platform ID";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5390396e+9, 1.5396471e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "GPS 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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    String axis "Y";
    String ioos_category "Location";
    String long_name "GPS Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    String axis "X";
    String ioos_category "Location";
    String long_name "GPS Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  SLP {
    String ioos_category "Pressure";
    String long_name "Sea Level Air Pressure";
    String standard_name "air_pressure_at_sea_level";
    String units "hPa";
  }
  SST {
    String ioos_category "Temperature";
    String long_name "sst";
    String standard_name "sea_surface_temperature";
    String units "deg C";
  }
  Tp {
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Swell Wave Peak Period";
    String standard_name "sea_surface_swell_wave_peak_period";
    String units "s";
  }
  Hs {
    String ioos_category "Surface Waves";
    String long_name "Significant Wave Height";
    String standard_name "sea_surface_swell_wave_significant_height";
    String units "m";
  }
  Dd {
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Wave To Direction";
    String standard_name "sea_surface_wave_to_direction";
    String units "degree";
  }
  WSpd {
    String ioos_category "Wind";
    String long_name "Wind Speed";
    String standard_name "wind_speed";
    String units "m/s";
  }
  WDir {
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Wind";
    String long_name "Wind From Direction";
    String standard_name "wind_from_direction";
    String units "degree";
  }
 }
  NC_GLOBAL {
    String acknowledgement "NOAA NA20OAR432027";
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_country "USA";
    String creator_institution "UCSD SIO";
    String creator_name "LDL";
    String creator_sector "academic";
    String creator_type "group";
    String creator_url "https://ldl.ucsd.edu/";
    String doi "10.57969/S94W2D";
    String geospatial_lat_units "degrees_north";
    String geospatial_lon_units "degrees_east";
    String history 
"2026-03-14T17:38:25Z (source database)
2026-03-14T17:38:25Z https://erddap.ldl.ucsd.edu/tabledap/LDL_HurricaneMichael.das";
    String id "10.57969/S94W2D";
    String infoUrl "https://gdp.ucsd.edu/ldl/hurricane-michael-drifters-2018/";
    String institution "UCSD SIO";
    String keywords "air, atmosphere, atmospheric, avgwavedir, avgwaveperiod, battery, current, currents, data, density, depth, direction, domwavedir, domwaveperiod, drifter, earth, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Oceans > Ocean Waves > Swells, Earth Science > Oceans > Ocean Waves > Wave Period, Earth Science > Oceans > Ocean Waves > Wave Speed/Direction, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Salinity, global, gps, gts, hdop, humidity, imei, iridium, lagrangian drifter laboratory, ldl, meteorology, meteosat, ocean, oceans, period, positioning, practical, pres, presdiff, pressure, profiler, retry, rssi, salinity, salinity-temperature-depth, science, scripps, sea, sea_surface_swell_wave_period, sea_surface_wave_to_direction, sea_water_electrical_conductivity, sea_water_practical_salinity, seawater, second, sigwaveht, spd, speed, sst, statistics, status, surface, surface waves, swell, swells, system, telecommunications, temperature, time, timestamp, ttff, velocity, water, wave, waves, wind, wind_from_direction, winddir, winds, windspd";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String naming_authority "doi.org";
    String publisher_email "ldl_drifter [at] ucsd [dot] edu";
    String publisher_institution "UCSD SIO";
    String publisher_name "LDL";
    String publisher_type "group";
    String references "https://doi.org/10.57969/S94W2D";
    String sourceUrl "(source database)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Lagrangian Drifter Laboratory (LDL) at Scripps Institution of Oceanography drifter observations of sea surface temperature, sea level pressure, wind and averaged wave properties under Hurricane Michael from 08-OCT-2018 to 15-OCT-2018";
    String time_coverage_end "2018-10-15T23:45:00Z";
    String time_coverage_start "2018-10-08T23:00:00Z";
    String title "Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Hurricane Michael (2018) Drifter Data";
  }
}

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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