Make A Graph

Dataset Title:	URI GSOPier - SUNA
Institution:	Graduate School of Oceanography, Marine Ecosystems Research Laboratory, University of Rhode Island (Dataset ID: URI_GSOPier_Suna)
Range:	longitude = -71.371185 to -71.371185°E, latitude = 41.49216 to 41.49216°N, depth = 1.0 to 1.0m, time = 2017-05-31T20:30:00Z to 2020-06-30T19:30:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form

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Graph Type:

X Axis:

Y Axis:

Color:

Constraints	Optional Constraint #1		Optional Constraint #2

Server-side Functions

distinct()

(" ")

Graph Settings

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Size:

Color:

Color Bar:

Continuity:

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N Sections:

Draw land mask:

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Optional:
Then set the File Type: (File Type information)
and

or view the URL:
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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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.4962626e+9, 1.5935454e+9;
    String axis "T";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "UTC Sample Time";
    String short_name "time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  station_name {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "station name";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue -999.99;
    Float64 actual_range 41.49216, 41.49216;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String short_name "lat";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue -999.99;
    Float64 actual_range -71.371187, -71.371187;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String short_name "lon";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue -999.99;
    Float64 actual_range 1.0, 1.0;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String short_name "depth";
    String standard_name "depth";
    String units "m";
  }
  nitrogen {
    Float64 _FillValue -999.99;
    Float64 actual_range -13.4, 152733.0;
    String ioos_category "Dissolved Nutrients";
    String long_name "Mass Concentration of Nitrogen";
    String standard_name "mass_concentration_of_inorganic_nitrogen_in_sea_water";
    String units "mg L-1";
  }
  lightSpec {
    Float64 _FillValue -999.99;
    Float64 actual_range 0.0, 27953.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Light Spec";
    String units "count";
  }
  darkSpec {
    Float64 _FillValue -999.99;
    Float64 actual_range 0.0, 21143.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Dark Spec";
    String units "count";
  }
  nitrate {
    Float64 _FillValue -999.99;
    Float64 actual_range -957.5, 63020.0;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Dissolved Nutrients";
    String long_name "Mole Concentration of Nitrate";
    String standard_name "mole_concentration_of_nitrate_in_sea_water";
    String units "mol m-3";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_name, latitude, longitude, depth";
    String contributor_email "[email protected]";
    String contributor_name "RPS";
    String contributor_role "custodian";
    String contributor_role_vocabulary "https://vocab.nerc.ac.uk/collection/G04/current/";
    String contributor_url "https://rpsgroup.com";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_address "11 Aquarium Road";
    String creator_city "Narragansett";
    String creator_country "USA";
    String creator_email "[email protected]";
    String creator_institution "University of Rhode Island's Graduate School of Oceanography";
    String creator_name "Heather Stoffel";
    String creator_phone "(401) 874 6860";
    String creator_postalcode "02882";
    String creator_sector "academic";
    String creator_state "Rhode Island";
    String creator_type "institution";
    String creator_url "http://www.gso.uri.edu/merl/merl.html";
    String date_created "2020-07-01";
    String date_issued "2020-07-01";
    Float64 Easternmost_Easting -71.371187;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 41.49216;
    Float64 geospatial_lat_min 41.49216;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -71.371187;
    Float64 geospatial_lon_min -71.371187;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 1.0;
    Float64 geospatial_vertical_min 1.0;
    String geospatial_vertical_origin "sea surface";
    String geospatial_vertical_positive "down";
    Float64 geospatial_vertical_resolution 0.0;
    String geospatial_vertical_units "m";
    String history 
"Observations
2024-11-14T19:17:17Z (local files)
2024-11-14T19:17:17Z http://www.neracoos.org/tabledap/URI_GSOPier_Suna.das";
    String id "GSOSUNA";
    String infoUrl "http://www.neracoos.org";
    String institution "Graduate School of Oceanography, Marine Ecosystems Research Laboratory, University of Rhode Island";
    String keywords "association, bay, chemistry, concentration, dark, darkSpec, data, depth, dissolved, dissolved nutrients, earth, Earth Science > Oceans > Ocean Chemistry > Inorganic Matter, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > Nitrogen, ecosystems, fix, graduate, greenwich, identifier, inorganic, island, laboratory, latitude, light, lightSpec, longitude, marine, mass, mass_concentration_of_inorganic_nitrogen_in_sea_water, matter, mole, mole_concentration_of_nitrate_in_sea_water, n02, name, neracoos, nitrate, nitrogen, no3, northeastern, nutrients, observing, ocean, oceanography, oceans, regional, research, rhode, sample, school, science, sea, seawater, sensor, spec, station, station_name, statistics, suna, systems, time, university, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Freely distributed";
    String Metadata_Conventions "Unidata Dataset Discovery v1.0, CF-1.6";
    String metadata_link "http://www.dem.ri.gov/bart/netdata.htm";
    String naming_authority "edu.uri";
    String neracoos_data_provider "URI";
    Float64 Northernmost_Northing 41.49216;
    String organization "Narragansett Bay Fixed-site Water Quality Monitoring Network (NBFSMN)";
    String processing_level "realtime";
    String project "NERACOOS";
    String publisher_address "195 New Hampshire Ave. Suite 240";
    String publisher_city "Portsmouth";
    String publisher_country "USA";
    String publisher_email "[email protected]";
    String publisher_name "Northeastern Regional Association of Coastal and Ocean Observing Systems (NERACOOS)";
    String publisher_phone "(603) 319 1785";
    String publisher_postalcode "03801";
    String publisher_state "New Hampshire";
    String publisher_type "institution";
    String publisher_url "http://www.neracoos.org/";
    String source "Observations";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 41.49216;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "Northeastern Regional Association Ocean Observing Systems (NERACOOS) Dock station consisting of a SUNA (Submersible Ultraviolet Nitrate Analyzer) deployed 1.0m from the surface. Funding agency is RIDEM_OWR and data quality control follow protocols from NBFSMN QAPP (www.dem.ri.gov/pubs/qapp/nbfsmn.pdf)";
    String testOutOfDate "now-2days";
    String time_coverage_end "2020-06-30T19:30:00Z";
    String time_coverage_start "2017-05-31T20:30:00Z";
    String title "URI GSOPier - SUNA";
    Float64 Westernmost_Easting -71.371187;
  }
}

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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