Make A Graph

Dataset Title:	Beach Litter Surveys Data v2025
Institution:	EMODnet Chemistry (Dataset ID: BEACH_LITTER_2025)
Range:	longitude = -31.1483 to 48.33503°E, latitude = 28.050034 to 79.68121°N
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form \| Files

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X Axis:

Y Axis:

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Constraints	Optional Constraint #1		Optional Constraint #2

Server-side Functions

distinct()

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Graph Settings

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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 {
  country_code {
    String conventions "https://vocab.nerc.ac.uk/collection/C32/current/";
    String ioos_category "Location";
    String long_name "Country Code";
  }
  location_code {
    String conventions "https://nodc.ogs.it/marinelitter/beachesmap";
    String ioos_category "Location";
    String long_name "Location Code";
  }
  location_name {
    String conventions "https://nodc.ogs.it/marinelitter/beachesmap";
    String ioos_category "Location";
    String long_name "Location Name";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 28.050034, 79.681214;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String source_name "location_latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -31.1482999997653, 48.3350306131;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "location_longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  location_SRID {
    Int16 _FillValue 32767;
    Int16 actual_range 4326, 4326;
    String conventions "https://vocab.nerc.ac.uk/collection/L10/current/";
    String ioos_category "Location";
    String long_name "Datum";
  }
  survey_code {
    Int32 _FillValue 2147483647;
    Int32 actual_range 9534, 35540;
    String ioos_category "Unknown";
    String long_name "Survey Code";
  }
  data_policy {
    String conventions "https://vocab.nerc.ac.uk/collection/L08/current/";
    String ioos_category "Unknown";
    String long_name "Data Access Policy";
  }
  date {
    Float64 actual_range 9.783072e+8, 1.7355168e+9;
    String ioos_category "Time";
    String long_name "Date";
    String source_name "date";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  survey_start_latitude {
    Float64 _FillValue NaN;
    Float64 actual_range 28.049599, 79.682732;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  survey_start_longitude {
    Float64 _FillValue NaN;
    Float64 actual_range -31.1488, 48.335031;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  survey_end_latitude {
    Float64 _FillValue NaN;
    Float64 actual_range 28.049721, 79.680364;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  survey_end_longitude {
    Float64 _FillValue NaN;
    Float64 actual_range -31.1478, 41.771141;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  survey_SRID {
    Int16 _FillValue 32767;
    Int16 actual_range 4326, 4979;
    String conventions "https://vocab.nerc.ac.uk/collection/L10/current/";
    String ioos_category "Unknown";
    String long_name "Survey Datum";
  }
  survey_length {
    Int16 _FillValue 32767;
    Int16 actual_range 0, 10000;
    String ioos_category "Unknown";
    String long_name "Survey Length";
  }
  survey_width {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 4, 106;
    String ioos_category "Unknown";
    String long_name "Survey Width";
  }
  survey_type {
    String conventions "https://nodc.ogs.it/marinelitter/vocab";
    String ioos_category "Unknown";
    String long_name "Survey Type";
  }
  litter_reference_list {
    String conventions "https://nodc.ogs.it/marinelitter/vocab";
    String ioos_category "Unknown";
    String long_name "Litter Reference List";
  }
  type_code {
    String ioos_category "Unknown";
    String long_name "Litter parameter code of the litter reference list used";
  }
  type_name {
    String ioos_category "Unknown";
    String long_name "Litter parameter name of the litter reference list used";
  }
  abundance {
    Int16 _FillValue 32767;
    Int16 actual_range 0, 32037;
    String ioos_category "Unknown";
    String long_name "Number of litter items found during the survey";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    Float64 Easternmost_Easting 48.3350306131;
    String formatting_guidelines_url "https://doi.org/10.6092/15c0d34c-a01a-4091-91ac-7c4f561ab508";
    Float64 geospatial_lat_max 79.681214;
    Float64 geospatial_lat_min 28.050034;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 48.3350306131;
    Float64 geospatial_lon_min -31.1482999997653;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-11-18T11:42:20Z (local files)
2025-11-18T11:42:20Z http://erddap.emodnet-chemistry.eu/tabledap/BEACH_LITTER_2025.das";
    String infoUrl "https://doi.org/10.13120/23f2c658-6880-4429-8809-07a512dc2b00";
    String institution "EMODnet Chemistry";
    String institution_url "https://emodnet.ec.europa.eu/en/chemistry";
    String license 
"Usage is subject to mandatory citation: \"This resource was generated
                in the framework of EMODnet Chemistry, under the support of DG MARE Call for Tender
                EASME/EMFF/2020/3.1.11/European Marine Observation and Data Network (EMODnet) - Lot
                5 - Chemistry\"";
    Float64 Northernmost_Northing 79.681214;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 28.050034;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Beach Litter Surveys Data v2025";
    String title "Beach Litter Surveys Data v2025";
    Float64 Westernmost_Easting -31.1482999997653;
  }
}

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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