Make A Graph

Dataset Title:	Lake County East Sonde Monitoring Station
Institution:	Lake County Department of Utilities (Dataset ID: obs_134)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form

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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";
    String axis "T";
    String calendar "gregorian";
    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";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  chlorophyll_fluorescence {
    String ioos_category "Unknown";
    String long_name "chlorophyll_fluorescence";
    String platform "platform";
    String units "RFU";
  }
  mass_concentration_of_blue_green_algae_in_sea_water {
    String ioos_category "Unknown";
    String long_name "phycocyanin_concentration";
    String platform "platform";
    String units "ug L-1";
  }
  mass_concentration_of_blue_green_algae_in_sea_water_rfu {
    String ioos_category "Unknown";
    String long_name "phycocyanin_fluorescence";
    String platform "platform";
    String units "RFU";
  }
  mass_concentration_of_chlorophyll_in_sea_water {
    String ioos_category "Unknown";
    String platform "platform";
    String standard_name "mass_concentration_of_chlorophyll_in_sea_water";
    String units "kg m-3";
  }
  mass_concentration_of_oxygen_in_sea_water {
    String ioos_category "Dissolved O2";
    String platform "platform";
    String standard_name "mass_concentration_of_oxygen_in_sea_water";
    String units "kg m-3";
  }
  sea_water_electrical_conductivity {
    String ioos_category "Salinity";
    String platform "platform";
    String standard_name "sea_water_electrical_conductivity";
    String units "S m-1";
  }
  sea_water_ph_reported_on_total_scale {
    String ioos_category "Unknown";
    String platform "platform";
    String standard_name "sea_water_ph_reported_on_total_scale";
    String units "1";
  }
  sea_water_specific_conductivity {
    String ioos_category "Unknown";
    String long_name "sea_water_specific_conductivity";
    String platform "platform";
    String units "S m-1";
  }
  sea_water_temperature {
    String ancillary_variables "sea_water_temperature_gross_range_test sea_water_temperature_spike_test sea_water_temperature_rate_of_change_test sea_water_temperature_flat_line_test sea_water_temperature_aggregate";
    String ioos_category "Temperature";
    String platform "platform";
    String standard_name "sea_water_temperature";
    String units "K";
  }
  sea_water_temperature_gross_range_test {
    String _Unsigned "false";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String ioos_category "Quality";
    String standard_name "gross_range_test_quality_flag";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_temperature_spike_test {
    String _Unsigned "false";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String ioos_category "Quality";
    String standard_name "spike_test_quality_flag";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_temperature_rate_of_change_test {
    String _Unsigned "false";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String ioos_category "Quality";
    String standard_name "rate_of_change_test_quality_flag";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_temperature_flat_line_test {
    String _Unsigned "false";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String ioos_category "Quality";
    String standard_name "flat_line_test_quality_flag";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_temperature_aggregate {
    String _Unsigned "false";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String ioos_category "Quality";
    String standard_name "aggregate_quality_flag";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_turbidity {
    String ioos_category "Total Suspended Matter";
    String platform "platform";
    String standard_name "sea_water_turbidity";
    String units "1";
  }
  platform {
    String _Unsigned "false";
    String cf_role "timeseries_id";
    String ioos_category "Unknown";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "platform,longitude,latitude";
    String Conventions "COARDS,CF-1.7,IOOS-1.2,ACDD-1.3";
    String creator_country "USA";
    String creator_email "John.Kuson@lakecountyohio.gov";
    String creator_institution "Lake County Department of Utilities";
    String creator_name "Lake County Department of Utilities";
    String creator_sector "gov_municipal";
    String creator_type "institution";
    String creator_url "https://www.lakecountyohio.gov/utilities/";
    String featureType "TimeSeries";
    String geospatial_lat_units "degrees_north";
    String geospatial_lon_units "degrees_east";
    String gts_ingest "false";
    String history 
"2024-05-03T07:05:38Z (source database)
2024-05-03T07:05:38Z https://seagull-erddap.glos.org/tabledap/obs_134.das";
    String id "obs_134";
    String infoUrl "https://www.lakecountyohio.gov/utilities/bacon-road-water-treatment-facility/";
    String institution "Lake County Department of Utilities";
    String keywords "at, Chlorophyll, chlorophyll, concentration, Conductivity, conductivity, depth, Dissolved, electrical, fluorescence, in, mass, of, on, oxygen, pH, ph, Phycocyanin, phycocyanin, reported, scale, sea, Specific, specific, temp, temperature, total, Turbidity, turbidity, Water, 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, GLOS, 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 "org.glos";
    String platform "fixed";
    String platform_name "Lake County East Sonde";
    String platform_vocabulary "http://mmisw.org/ont/ioos/platform";
    String publisher_country "United States";
    String publisher_email "info@glos.org";
    String publisher_institution "GLOS";
    String publisher_url "https://glos.org";
    String sourceUrl "(source database)";
    String standard_name_vocabulary "CF Standard Name Table v77";
    String summary "The Lake County Department of Utilities (LCDU) East Sub-District WTP is located on Lake Road in Painesville Township OH and has a design capacity of 9 million gallons a day. The YSI EXO 2 Sonde is installed the treatment facilities raw water pumping station located on the Lake Erie shore line in the eastern portion of the county. This facility draws water from its 48 inch intake extends approximately 4,000 feet into Lake Erie. The LCDU is proud to support the GLOS monitoring network and to bring additional knowledge and value to the residents of Lake County.";
    String title "Lake County East Sonde Monitoring Station";
  }
}

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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