Make A Graph

Dataset Title:	Profile - R4_x261_231_0006 - PE17_23_C4 - 28.47N, 88.60W - 2017-06-12
Institution:	University of Louisiana at Lafayette / Department of Physics (Dataset ID: R4_x261_231_0006_PE17_23_C4)
Range:	longitude = -88.59534 to -88.59534°E, latitude = 28.471333 to 28.471333°N, depth = 1.044 to 1447.79m, time = 2017-06-12T00:51:13Z to 2017-06-12T00:51:13Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| 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 {
  profile {
    Int16 _FillValue -999;
    String cf_role "profile_id";
    String ioos_category "Identifier";
    String long_name "PE17_23_4";
    Int16 missing_value 32767;
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.497228673e+9, 1.497228673e+9;
    String axis "T";
    String calendar "gregorian";
    Float64 colorBarMaximum 1.6e+9;
    Float64 colorBarMinimum 1.4e+9;
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String standard_name_url "http://mmisw.org/ont/ioos/parameter/time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
    Float64 valid_max 1.497228673e+9;
    Float64 valid_min 1.497228673e+9;
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue -99999.0;
    Float64 actual_range 28.471333333333334, 28.471333333333334;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "Latitude";
    Float64 missing_value -99999.0;
    String standard_name "latitude";
    String standard_name_url "http://mmisw.org/ont/ioos/parameter/latitude";
    String units "degrees_north";
    Float64 valid_max 28.471333333333334;
    Float64 valid_min 28.471333333333334;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue -99999.0;
    Float64 actual_range -88.59533333333333, -88.59533333333333;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String coverage_content_type "coordinate";
    Float64 fillvalue -99999.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String standard_name_url "http://mmisw.org/ont/ioos/parameter/longitude";
    String units "degrees_east";
    Float64 valid_max -88.59533333333333;
    Float64 valid_min -88.59533333333333;
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue -99999.0;
    Float64 actual_range 1.044, 1447.79;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "Depth";
    Float64 missing_value -99999.0;
    String ncei_name "DEPTH";
    String positive "down";
    String standard_name "depth";
    String standard_name_url "http://mmisw.org/ont/cf/parameter/depth";
    String units "m";
    Float64 valid_max 1447.79;
    Float64 valid_min 1.044;
  }
  sea_water_temperature {
    Float64 _FillValue -99999.0;
    Float64 actual_range 4.2678, 27.2124;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Temperature";
    String long_name "sea_water_temperature";
    Float64 missing_value -99999.0;
    String ncei_name "TEMPERATURE";
    String platform "RV_Pelican";
    String source "in situ measuremnts";
    String standard_name "sea_water_temperature";
    String standard_name_url "http://mmisw.org/ont/ioos/parameter/water_temperature";
    String units "degree_Celsius";
    Float64 valid_max 27.2124;
    Float64 valid_min 4.2678;
  }
  sea_water_electrical_conductivity {
    Float64 _FillValue -99999.0;
    Float64 actual_range 3.341256, 5.743037;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 30.0;
    String coverage_content_type "physicalMeasurement";
    String instrument "SBE-911+ CTD";
    String ioos_category "Salinity";
    String long_name "Conductivity";
    Float64 missing_value -99999.0;
    String ncei_name "CONDUCTIVITY";
    String platform "RV_Pelican";
    String source "in situ measuremnts";
    String standard_name "sea_water_electrical_conductivity";
    String standard_name_url "http://mmisw.org/ont/ioos/parameter/sea_water_electrical_conductivity";
    String units "S m-1";
    Float64 valid_max 5.743037;
    Float64 valid_min 3.341256;
  }
  sea_water_salinity {
    Float64 _FillValue -99999.0;
    Float64 actual_range 34.8977, 36.6266;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String coverage_content_type "physicalMeasurement";
    String instrument "SBE-911+ CTD";
    String ioos_category "Salinity";
    String long_name "sea_water_salinity";
    Float64 missing_value -99999.0;
    String ncei_name "SALINITY";
    String platform "RV_Pelican";
    String source "in situ measuremnts";
    String standard_name "sea_water_practical_salinity";
    String standard_name_url "http://mmisw.org/ont/cf/parameter/sea_water_practical_salinity";
    String units "PSU";
    Float64 valid_max 36.6266;
    Float64 valid_min 34.8977;
  }
  dissolved_raw_oxygen {
    Float64 _FillValue -99999.0;
    Float64 actual_range 1.2498, 2.5577;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    String instrument "SBE-911+ CTD";
    String ioos_category "Dissolved O2";
    String long_name "Raw dissolved oxygen";
    Float64 missing_value -99999.0;
    String platform "RV_Pelican";
    String source "in situ measuremnts";
    String standard_name "volume_fraction_of_oxygen_in_sea_water";
    String standard_name_url "https://mmisw.org/ont/cf/unknown";
    String units "volt";
    Float64 valid_max 2.5577;
    Float64 valid_min 1.2498;
  }
  flag {
    Float64 _FillValue -99999.0;
    Float64 actual_range 0.0, 0.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "qualityInformation";
    String instrument "SBE-911+ CTD";
    String ioos_category "Quality";
    String long_name "quality flag (0 = good; 1 = bad)";
    Float64 missing_value NaN;
    String platform "RV_Pelican";
    String standard_name "quality_flag";
    String standard_name_url "http://mmisw.org/ont/cf/parameter/unknown";
    Float64 valid_max 0.0;
    Float64 valid_min 0.0;
  }
  platform {
    String actual_range 
"
";
    String call_sign "WSK3051";
    String ioos_category "Unknown";
    String long_name "RV_Pelican";
  }
  instrument {
    String actual_range 
"
";
    String ioos_category "Unknown";
    String long_name "SBE-911+ CTD";
    String make_model "SBE-911+";
  }
  crs {
    Int32 _FillValue -999;
    String epsg_code "EPSG:4326";
    String grid_mapping_name "latitude_longitude";
    Float64 inverse_flattening 298.257223563;
    String ioos_category "Unknown";
    String long_name "grid mapping variable for horizontal spatial coordinate reference system (CRS)";
    Float64 longitude_of_prime_meridian 0.0;
    Int32 missing_value -999;
    Float64 semi_major_axis 6378137.0;
    String standard_name_url "http://mmisw.org/ont/cf/parameter/unknown";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Profile";
    String cdm_profile_variables "profile";
    String Conventions "CF-1.6, ACDD-1.3, IOOS-1.2, COARDS";
    String Country "USA";
    String creator_address "104 University Circle";
    String creator_city "Lafayette";
    String creator_country "USA";
    String creator_email "nas@louisiana.edu";
    String creator_institution "University of Louisiana at Lafayette / Department of Physics";
    String creator_name "Natalia Sidorovskaia";
    String creator_phone "+1-337-482-6274";
    String creator_postalcode "70504";
    String creator_role "Professor";
    String creator_sector "academic";
    String creator_state "Louisiana";
    String creator_type "person";
    String creator_url "https://data.gulfresearchinitiative.org/data/R4.x261.231:0006";
    String cruise_name "PE17-23";
    String date_created "2021-04-28T20:38:02Z";
    String date_issued "2021-04-28T20:38:02Z";
    String date_metadata_modified "2021-04-28T20:38:02Z";
    String date_modified "2021-04-28T20:38:02Z";
    Float64 Easternmost_Easting -88.59533333333333;
    String featureType "Profile";
    String geospatial_bounds "Point((28.65277 -88.56328, 28.37782 -89.0081, 28.34027 -89.14987, 28.47273 -88.59687, 28.67933 -88.02533, 29.0345 -88.2765, 28.69033 -88.48033, 28.62288 -89.08457))";
    String geospatial_bounds_crs "EPSG:4326";
    String geospatial_bounds_vertical_crs "EPSG:5831";
    Float64 geospatial_lat_max 28.471333333333334;
    Float64 geospatial_lat_min 28.471333333333334;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -88.59533333333333;
    Float64 geospatial_lon_min -88.59533333333333;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 1447.79;
    Float64 geospatial_vertical_min 1.044;
    String geospatial_vertical_positive "down";
    Float64 geospatial_vertical_resolution 2.841760344841216e-6;
    String geospatial_vertical_units "m";
    String history 
"2021-04-28T20:35:10Z
2024-10-07T10:50:10Z (local files)
2024-10-07T10:50:10Z https://erddap.griidc.org/tabledap/R4_x261_231_0006_PE17_23_C4.das";
    String id "PE17-23";
    String infoUrl "https://data.gulfresearchinitiative.org/data/R4.x261.231:0006";
    String institution "University of Louisiana at Lafayette / Department of Physics";
    String instrument "SBE-911+ CTD";
    String instrument_vocabulary "GCMD Science Keywords Version 9.1.5";
    String keywords "10-16, 911+, bad, chemistry, conductivity, coordinate, crs, ctd, data, density, department, depth, depth profile, dissolved, dissolved o2, dissolved_raw_oxygen, earth, Earth Science > Oceans > Ocean Chemistry > Oxygen, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Salinity, earth science>oceans>ocean temperature>water temperature, earth science>oceans>salinity/density>salinity, electrical, flag, fraction, gom, good, grid, gulf, gulf of mexico, horizontal, identifier, instrument, lafayette, latitude, longitude, louisiana, mapping, mexico, mod, modulus, northern, O2, ocean, oceans, oxygen, pe17, pelican, physics, platform, practical, profile, quality, quality_flag, raw, reference, salinity, sbe, sbe-911+, science, sea, sea_water_electrical_conductivity, sea_water_practical_salinity, sea_water_salinity, sea_water_temperature, seawater, sonde, spatial, system, temperature, time, university, variable, volume, volume_fraction_of_oxygen_in_sea_water, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "These data may be redistributed and used without restriction.";
    String metadata_link "https://data.gulfresearchinitiative.org/data/R4.x261.231:0006";
    String naming_authority "edu.louisiana";
    Float64 Northernmost_Northing 28.471333333333334;
    String platform "RV_Pelican";
    String platform_name "RV_Pelican";
    String platform_vocabulary "https://mmisw.org/ont/ioos/platform";
    String processing_level "Geophysical units from raw data";
    String product_version "v0.0";
    String program "The Gulf of Mexico Research Initiative (GOMRI)";
    String project "Littoral Acoustic Demonstration Center - Gulf Ecological Monitoring and Modeling (LADC-GEMM)";
    String publisher_address "6300 Ocean Drive";
    String publisher_city "Corpus Christi";
    String publisher_country "USA";
    String publisher_email "griidc@gomri.org";
    String publisher_institution "Gulf of Mexico Research Initiative Information and Data (GRIIDC)";
    String publisher_name "Gulf of Mexico Research Initiative Information and Data (GRIIDC)";
    String publisher_phone "+1-301-713-3277";
    String publisher_postalcode "78412";
    String publisher_state "Texas";
    String publisher_type "institution";
    String publisher_udi "R4.x261.231:0006";
    String publisher_url "https://data.gulfresearchinitiative.org";
    String references "data.gomri.org";
    String sea_name "Gulf of Mexico";
    String source "in situ measurements";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 28.471333333333334;
    String standard_name_vocabulary "CF Standard Name Table v72";
    String subsetVariables "profile, time, latitude, longitude, flag, platform, instrument, crs";
    String summary "Conductivity, Temperature, Depth (CTD) data from Northern Gulf of Mexico June 10-16, 2017. On-board CTD casts were collected in the Northern Gulf of Mexico Summer, 2017 aboard the R/V Pelican (PE17-23) while collecting visual and acoustic data. A Sea-Bird SBE 911 CTD with processing software was used to collect data, then convert from HEX to ASCII files and average 24 Hz data over 1 meter intervals.";
    String time_coverage_duration "P00Y0M00DT00H00M00S";
    String time_coverage_end "2017-06-12T00:51:13Z";
    String time_coverage_start "2017-06-12T00:51:13Z";
    String title "Profile - R4_x261_231_0006 - PE17_23_C4 - 28.47N, 88.60W - 2017-06-12";
    Float64 Westernmost_Easting -88.59533333333333;
  }
}

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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