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Dataset Title:	CreamT flood web service: Historic sea water level Exmouth station 117 - Dawlish_1A
Institution:	Regional Coastal Monitoring Programme (Dataset ID: CreamT_Legacy_API_5cd8_5b4d_17e2)
Range:	longitude = -3.42358 to -3.42358°E, latitude = 50.61739 to 50.61739°N, time = 2019-01-01T00:00:00Z to 2019-12-31T23:50:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

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Server-side Functions

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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 1.5463008e+9, 1.5778362e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date/Time (GMT)";
    String source_name "Date/Time (GMT)";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -3.42358, -3.42358;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String sdn_P02_urn "SDN:P02::ALON";
    String sdn_parameter_name "Longitude east";
    String sdn_parameter_urn "SDN:P01::ALONZZ01";
    String sdn_uom_name "Degrees east";
    String sdn_uom_urn "SDN:P06::DEGE";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 50.61739, 50.61739;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Latitude north";
    String sdn_parameter_urn "SDN:P01::ALATZZ01";
    String sdn_uom_name "Degrees north";
    String sdn_uom_urn "SDN:P06::DEGN";
    String standard_name "latitude";
    String units "degrees_north";
  }
  flag {
    String _Unsigned "false";
    Byte actual_range 1, 9;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "flag_meanings,Correct value,Interpolated value,Doubtful value,Isolated spike or wrong value,Correct but extreme value,Reference change detected,Constant value,Out of range,Missing data";
    String flag_values "0,1,2,3,4,5,6,7,8,9";
    String long_name "Flag";
  }
  sea_water_level_ordnance_datum {
    Float64 actual_range -19977.069, 84726.34;
    Float64 colorBarMaximum 2.0;
    Float64 colorBarMinimum -2.0;
    String long_name "Sea water level";
    String sdn_P02_name "Sea level";
    String sdn_P02_urn "SDN:P02::ASLV";
    String sdn_parameter_name "Surface elevation (unspecified datum) of the water body";
    String sdn_parameter_urn "SDN:P01::ASLVZZ01";
    String sdn_uom_name "Metres";
    String sdn_uom_urn "SDN:P06::ULAA";
    String standard_name "water_surface_height_above_datum";
    String units "m";
  }
  sea_water_level_chart_datum {
    Float64 actual_range -19975.239, 84728.17;
    Float64 colorBarMaximum 2.0;
    Float64 colorBarMinimum -2.0;
    String long_name "Sea water level";
    String sdn_P02_name "Sea level";
    String sdn_P02_urn "SDN:P02::ASLV";
    String sdn_parameter_name "Surface elevation (unspecified datum) of the water body";
    String sdn_parameter_urn "SDN:P01::ASLVZZ01";
    String sdn_uom_name "Metres";
    String sdn_uom_urn "SDN:P06::ULAA";
    String standard_name "water_surface_height_above_datum";
    String units "m";
  }
  residual {
    Float32 _FillValue 9999.0;
    Float32 actual_range -0.551, 0.718;
    String long_name "Residual";
    String sdn_P02_name "Sea level";
    String sdn_P02_urn "SDN:P02::ASLV";
    String sdn_parameter_name "Surface elevation residual of the water body by subtraction of predicted value (unspecified source) from observed value";
    String sdn_parameter_urn "SDN:P01::ASLVR101";
    String sdn_uom_name "Metres";
    String sdn_uom_urn "SDN:P06::ULAA";
    String units "m";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "cco@channelcoast.org";
    String creator_name "Regional Coastal Monitoring Programme of England";
    String creator_type "institution";
    String creator_url "http://www.coastalmonitoring.org/";
    Float64 Easternmost_Easting -3.42358;
    String featureType "Point";
    Float64 geospatial_lat_max 50.61739;
    Float64 geospatial_lat_min 50.61739;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -3.42358;
    Float64 geospatial_lon_min -3.42358;
    String geospatial_lon_units "degrees_east";
    String history 
"Downloaded from http://data.channelcoast.org/ on 2020-10-12
2024-04-19T06:41:30Z https://www.channelcoast.org/realtimedata/?chart=117&tab=tides&disp_option=
2024-04-19T06:41:30Z https://linkedsystems.uk/tabledap/CreamT_Legacy_API_5cd8_5b4d_17e2.das";
    String infoUrl "https://www.channelcoast.org/realtimedata/?chart=117&tab=tides&disp_option=";
    String institution "Regional Coastal Monitoring Programme";
    String keywords "bodc, british, centre, data, date, date/time, earth, Earth Science > Oceans > Sea Surface Topography > Sea Surface Height, exmouth, flag, gauge, height, latitude, longitude, ocean, oceanographic, oceans, residual, science, sea, sea_surface_height, surface, tide, Tide_CD, Tide_OD, time, topography";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Data displayed on this page are from the Regional Coastal Monitoring Programme, made freely available under the terms of the Open Government Licence (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).";
    Float64 Northernmost_Northing 50.61739;
    String publisher_email "enquiries@bodc.ac.uk";
    String publisher_institution "National Oceanography Centre (NOC)";
    String publisher_name "British Oceanographic Data Centre (BODC)";
    String publisher_url "https://www.bodc.ac.uk/";
    String site_name "CreamT flood hazard monitoring site - Dawlish_1A";
    String sourceUrl "https://www.channelcoast.org/realtimedata/?chart=117&tab=tides&disp_option=";
    Float64 Southernmost_Northing 50.61739;
    String standard_name_vocabulary "https://vocab.nerc.ac.uk/collection/P07/current/";
    String subsetVariables "latitude, longitude, time";
    String summary "Historic sea water level timeseries data from Regional Coastal Monitoring Programme Exmouth station 117. The data are used in this instance of ERDDAP as part of the CreamT flood hazard web service that monitors site Dawlish_1A.";
    String time_coverage_end "2019-12-31T23:50:00Z";
    String time_coverage_start "2019-01-01T00:00:00Z";
    String title "CreamT flood web service: Historic sea water level Exmouth station 117 - Dawlish_1A";
    Float64 Westernmost_Easting -3.42358;
  }
}

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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