Make A Graph

Dataset Title:	ARTG Buoy Bottom Water Quality Data
Institution:	University of Connecticut (Dataset ID: ARTG_WQ_BTM)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| 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()

Hover here to see a list of options. Click on an option to select it.

Graph Settings

Marker Type:

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Color:

Color Bar:

Continuity:

Scale:

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N Sections:

Draw land mask:

Y Axis Minimum:

Maximum:

(Please be patient. It may take a while to get the data.)

Optional:
Then set the File Type: (File Type information)
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or view the URL:
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Click on the map to specify a new center point.

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[The graph you specified. Please be patient.]

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 {
  station {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "ARTG Near-Bottom Water Quality";
  }
  mooring_site_desc {
    String ioos_category "Location";
    String long_name "Station Description";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    String axis "Z";
    String ioos_category "Location";
    String long_name "Sensor Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  pressure {
    String ioos_category "Location";
    String long_name "Sensor Pressure";
    String standard_name "pressure";
    String units "dBars";
  }
  time {
    String _CoordinateAxisType "Time";
    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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sea_water_temperature {
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "Sea Water Temperature";
    String standard_name "sea_water_temperature";
    String units "celsius";
  }
  sea_water_salinity {
    Float64 colorBarMaximum 33.0;
    Float64 colorBarMinimum 20.0;
    String ioos_category "Salinity";
    String long_name "Sea Water Salinity";
    String standard_name "sea_water_salinity";
    String units "psu";
  }
  oxygen_concentration_in_sea_water {
    String ioos_category "Dissolved O2";
    String long_name "Oxygen Concentration In Sea Water";
    String units "mg/L";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station";
    String contributor_name "Northeastern Regional Association of Coastal Ocean Observing Systems (NERACOOS)";
    String contributor_role "sponsor";
    String contributor_url "http://neracoos.org";
    String Conventions "COARDS, CF-1.6, Unidata Dataset Discovery v1.0";
    String creator_address "1080 Shennecossett Road, Groton, CT 06340 USA";
    String creator_city "Groton";
    String creator_country "United States";
    String creator_email "james.odonnell@uconn.edu,kay.howard-strobel@uconn.edu,todd.fake@uconn.edu";
    String creator_institution "University of Connecticut";
    String creator_sector "academic";
    String creator_url "http://lisicos.uconn.edu";
    String featureType "TimeSeries";
    String geospatial_lat_units "degrees_north";
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2024-11-21T12:58:24Z (source database)
2024-11-21T12:58:24Z http://merlin.dms.uconn.edu:8080/tabledap/ARTG_WQ_BTM.das";
    String id "ARTG";
    String info_url "http://lisicos.uconn.edu/about_artg.php";
    String infoUrl "http://lisicos.uconn.edu/";
    String institution "University of Connecticut";
    String keywords "Buoy > Oceans > Ocean Data > Long Island Sound";
    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 "edu.connecticut";
    String neracoos_data_provider "UCONN";
    String project "NERACOOS";
    String publisher_country "United States";
    String publisher_email "todd.fake@uconn.edu";
    String publisher_institution "University of Connecticut";
    String publisher_name "Department of Marine Sciences, University of Connecticut";
    String publisher_url "http://lisicos.uconn.edu";
    String sourceUrl "(source database)";
    String standard_name_vocabulary "CF-1.6";
    String station "ARTG_WQ_BTM";
    String station_site_desc "ARTG Buoy Bottom Water Quality Data";
    String subsetVariables "station";
    String summary "Ocean observation data from the Northeastern Regional Association of Coastal Ocean Observing Systems (NERACOOS). The NERACOOS region includes the northeast United States and Canadian Maritime provinces, as part of the United States Integrated Ocean Observing System (IOOS).  These data are served by Unidata's Thematic Realtime Environmental Distributed Data Services (THREDDS) Data Server (TDS) in a variety of interoperable data services and output formats.";
    String testOutOfDate "now-1day";
    String title "ARTG Buoy Bottom Water Quality Data";
    String wmo_platform_code "44022";
  }
}

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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