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Dataset Title:  URI Greenwich Bay, RI Corrected Suna Nitrate Data   RSS
Institution:  Graduate School of Oceanography, Marine Ecosystems Research Laboratory, University of Rhode Island   (Dataset ID: GREEN_BAY_TS_corrected_nitrate_csv)
Range: longitude = -71.44592 to -71.44592°E, latitude = 41.68607 to 41.68607°N, depth = 1.0 to 1.0m, time = 2018-07-20T18:45:00Z to 2018-10-04T20:30:00Z
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background | Subset | Data Access Form
 
Graph Type:  ?
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Y Axis: 
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Y Axis Minimum:   Maximum:   Ascending: 
 
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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:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5321123e+9, 1.538685e+9;
    String axis "T";
    String ioos_category "Time";
    String long_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 {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station Name";
  }
  mooring_site_desc {
    String ioos_category "Identifier";
    String long_name "Mooring Site Desc";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 41.68607, 41.68607;
    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";
    Float32 actual_range -71.44592, -71.44592;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 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 "Sensor Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  nitrate_umol {
    Float32 actual_range 0.0, 14.9;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Dissolved Nutrients";
    String long_name "Mole Concentration Of Nitrate In Sea Water";
    String standard_name "mole_concentration_of_nitrate_in_sea_water";
    String units "umol";
  }
  nitrogen {
    Float32 actual_range 0.0, 0.2;
    String ioos_category "Dissolved Nutrients";
    String long_name "Nitrogen";
    String standard_name "mole_concentration_of_nitrate_in_sea_water";
    String units "mg L-1";
  }
  lightSpec {
    Int16 actual_range 759, 19718;
    String ioos_category "Unknown";
    String long_name "Light Spec";
  }
  darkSpec {
    Int16 actual_range 699, 842;
    String ioos_category "Unknown";
    String long_name "Dark Spec";
  }
  Comment {
    String ioos_category "Quality";
    String long_name "Comment";
  }
  QA_QC_Flag {
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "QA QC Flag";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station, longitude, latitude";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_address "11 Aquarium Road";
    String creator_city "Narragansett";
    String creator_country "USA";
    String creator_email "stoffelh@uri.edu";
    String creator_name "Graduate School of Oceanography, Marine Ecosystems Research Laboratory, University of Rhode Island";
    String creator_phone "401-874-6661";
    String creator_sector "academic";
    String creator_state "Rhode Island";
    String creator_url "http://www.gso.uri.edu/merl/merl.html";
    String creator_zipcode "02882";
    String defaultGraphQuery "time,nitrate_umol&time%3E=max(time)-7days&.draw=lines&.color=0x000000";
    Float32 depth 1.0;
    Float64 Easternmost_Easting -71.44592;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 41.68607;
    Float64 geospatial_lat_min 41.68607;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -71.44592;
    Float64 geospatial_lon_min -71.44592;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 1.0;
    Float64 geospatial_vertical_min 1.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2020-01-22T11:36:46Z (local files)
2020-01-22T11:36:46Z http://www.neracoos.org/tabledap/GREEN_BAY_TS_corrected_nitrate_csv.das";
    String infoUrl "http://www.neracoos.org/nutrientobservatory";
    String institution "Graduate School of Oceanography, Marine Ecosystems Research Laboratory, University of Rhode Island";
    String keywords "bay, chemistry, comment, concentration, corrected, dark, darkSpec, data, dissolved, dissolved nutrients, earth, Earth Science > Oceans > Ocean Chemistry > Nitrate, flag, green, island, latitude, light, lightSpec, longitude, mole, mole_concentration_of_nitrate_in_sea_water, n02, name, nitrate, nitrate_umol, nitrogen, no3, nutrients, ocean, oceans, QA_QC_Flag, quality, rhode, science, sea, seawater, spec, station, station_name, suna, time, university, water";
    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 neracoos_data_provider "URI";
    Float64 Northernmost_Northing 41.68607;
    String publisher_email "info@neracoos.org";
    String publisher_name "Northeastern Regional Association of Coastal and Ocean Observing Systems (NERACOOS)";
    String publisher_phone "(603) 319-1785";
    String publisher_url "http://www.neracoos.org/";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 41.68607;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String subsetVariables "station, latitude, longitude";
    String summary "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 time_coverage_end "2018-10-04T20:30:00Z";
    String time_coverage_start "2018-07-20T18:45:00Z";
    String title "URI Greenwich Bay, RI Corrected Suna Nitrate Data";
    Float64 Westernmost_Easting -71.44592;
  }
}

 

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.

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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