Make A Graph

Dataset Title:	OMDS-TSG data \| SGDO-Donnée TSG
Institution:	Fisheries and Oceans Canada (Dataset ID: mpoSgdoTsg)
Range:	longitude = -73.9748 to -4.7812°E, latitude = 35.891 to 59.699°N, depth = 3.0 to 7.5m, time = 1999-12-03T02:55:00Z to 2023-12-29T10:23:13Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form \| Files

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Constraints	Optional Constraint #1		Optional Constraint #2

Server-side Functions

distinct()

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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 9.441896999999977e+8, 1.7038453930000048e+9;
    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";
    Float64 _FillValue -9999.0;
    Float64 actual_range 35.891, 59.699;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue -9999.0;
    Float64 actual_range -73.9748, -4.7812;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 3.0, 7.5;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "depth below surface";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  TEMPPR01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -7.939, 42.496;
    String ancillary_variables "TEMPPR01_QC";
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String generic_name "temperature";
    String legacy_GF3_code "SDN=GF3==TE90";
    String long_name "temperature";
    String sdn_parameter_name "Temperature (ITS-90) of the water body";
    String sdn_parameter_urn "SDN=P01==TEMPPR01";
    String sdn_uom_name "Celsius degree";
    String sdn_uom_urn "SDN=P06==UPAA";
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
  TEMPPR01_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 4;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "no_quality_control value_seems_correct value_appears_inconsistent_with_other_values value_seems_doubtful value_seems_erroneous value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "temperature_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for TEMPPR01";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  PSALSZ01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -0.005, 100.735;
    String ancillary_variables "PSALSZ01_QC";
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String generic_name "salinity";
    String legacy_GF3_code "SDN=GF3==PSAL";
    String long_name "salinity";
    String sdn_parameter_name "Practical salinity of the water body by thermosalinograph and computation using UNESCO 1983 algorithm";
    String sdn_parameter_urn "SDN=P01==PSALSZ01";
    String sdn_uom_urn "SDN=P06==UUUU";
    String standard_name "sea_water_practical_salinity";
    String units "PSS-78";
  }
  PSALSZ01_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 4;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "no_quality_control value_seems_correct value_appears_inconsistent_with_other_values value_seems_doubtful value_seems_erroneous value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "salinity_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for PSALSZ01";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  DENSWB01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range 991.909, 1082.737;
    String ancillary_variables "DENSWB01_QC";
    Float64 colorBarMaximum 28.0;
    Float64 colorBarMinimum 20.0;
    String generic_name "density";
    String legacy_GF3_code "SDN=GF3==DENS";
    String long_name "density";
    String sdn_parameter_name "Density of the water body by gravimetry";
    String sdn_parameter_urn "SDN=P01==DENSWB01";
    String sdn_uom_name "Kilograms per cubic metre";
    String sdn_uom_urn "SDN=P06==UKMC";
    String standard_name "sea_water_density";
    String units "kg m-3";
  }
  DENSWB01_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 4;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "no_quality_control value_seems_correct value_appears_inconsistent_with_other_values value_seems_doubtful value_seems_erroneous value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "density_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for DENSWB01";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  PHXXPR01 {
    Float64 actual_range -3.5, 14.0;
  }
  PHXXPR01_QC {
    String _Unsigned "false";
    Byte actual_range 0, 4;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
  }
  id {
    String cf_role "trajectory_id";
    String long_name "Original filename";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Trajectory";
    String cdm_trajectory_variables "id";
    String chief_scientist "GalbraithP";
    String Conventions "CF-1.10, COARDS, ACDD-1.3";
    String coord_system "earth";
    String country_code "Ca";
    String country_institute_code "CaIML";
    String creator_name "Institut Maurice-Lamontagne, Department of Fisheries and oceans Canada";
    String creator_type "person";
    String cruise_description "Thermosalinographs embarked on commercial ships";
    String cruise_end_date "2012-12-31T23:50:00Z";
    String cruise_name "Long Term ThermoSalinoGraph Program";
    String cruise_number "LTTSGP2012";
    String cruise_start_date "2012-01-01T00:00:00Z";
    String date_created "2024-02-28T10:32:05Z";
    Float64 Easternmost_Easting -4.7812;
    Float64 end_latitude 47.548167;
    Float64 end_longitude -52.610167;
    String event_comments "Water is pumped into the measurement instrument. Depth of water intake fluctuates according to the ship's cargo. Track: Halifax to St-John's";
    String event_number "1229";
    String event_qualifier1 "Cabot";
    String featureType "Trajectory";
    String flag_meanings "no_quality_control value_seems_correct value_appears_inconsistent_with_other_values value_seems_doubtful value_seems_erroneous value_was_modified value_missing";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String flags_reference "BODC SeaDataNet";
    Float64 geospatial_lat_max 59.699;
    Float64 geospatial_lat_min 35.891;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -4.7812;
    Float64 geospatial_lon_min -73.9748;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 7.5;
    Float64 geospatial_vertical_min 3.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"Conversion from Thermosalinograph (TSG) data file to ODF. The data acquired while the pump was stopped is described as erroneous.
2024-11-06T02:48:01Z (local files)
2024-11-06T02:48:01Z https://erddap.ogsl.ca/tabledap/mpoSgdoTsg.das";
    String infoUrl "www.dfo-mpo.gc.ca/index-fra.html";
    Float64 initial_latitude 45.541;
    Float64 initial_longitude -73.529;
    String institution "Fisheries and Oceans Canada";
    String instrument "SBE21";
    String instrument_type "Thermosalinograph";
    String keywords "below, canada, data, density, denswb01, DENSWB01_QC, department, depth, earth, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Density, Earth Science > Oceans > Salinity/Density > Salinity, fisheries, flag, institut, lamontagne, latitude, long, longitude, maurice, maurice-lamontagne, ocean, oceans, phxxpr01, PHXXPR01_QC, practical, program, psalsz01, PSALSZ01_QC, quality, quality_flag, salinity, science, sea, sea_water_density, sea_water_practical_salinity, sea_water_temperature, seawater, surface, temperature, temppr01, TEMPPR01_QC, term, thermosalinograph, time, tsg, water";
    String keywords_fr "TSG,densité,salinité,température";
    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 manufacturer "Sea-Bird";
    String model "SBE21";
    String naming_authority "BODC, SDC, CF, MEDS";
    Float64 Northernmost_Northing 59.699;
    String odf_data_type "TSG";
    String organization "IML";
    String project "Long Term ThermoSalinoGraph Program";
    String publisher_email "gddaiss-dmsaisb@dfo-mpo.gc.ca";
    String publisher_name "Section de la gestion des données, MPO-Québec";
    String publisher_type "institution";
    Float64 sampling_interval 60.0;
    String source "TSG_LTTSGP2012_1229_CABOT_60.ODF";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 35.891;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Thermosalinographs embarked on commercial ships";
    Float64 time_coverage_duration 2.715;
    String time_coverage_duration_units "days";
    String time_coverage_end "2023-12-29T10:23:13Z";
    String time_coverage_start "1999-12-03T02:55:00Z";
    String title "OMDS-TSG data | SGDO-Donnée TSG";
    Float64 Westernmost_Easting -73.9748;
  }
}

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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