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ERDDAP > tabledap > Make A Graph ?

Dataset Title:  EastJamesBay_CTD_2018-21 Subscribe RSS
Institution:  Centre for Earth Observation Science   (Dataset ID: EJB_2018_2021_CTDs_96c2_a5f0_0733)
Range: longitude = -79.71 to -78.45°E, latitude = 51.95 to 54.63°N, time = 2018-03-01T00:00:00Z to 2021-08-20T19:42:00Z
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form | Files
 
Graph Type:  ?
X Axis: 
Y Axis: 
Color: 
-1+1
 
Constraints ? Optional
Constraint #1 ? 		Optional
Constraint #2 ?
       
       
       
       
       
 
Server-side Functions ?
 distinct() ?
? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")
 
Graph Settings
Marker Type:   Size: 
Color: 
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   
 
(Please be patient. It may take a while to get the data.)
 
Optional:
Then set the File Type: (File Type information)
and
or view the URL:
(Documentation / Bypass this form ? )
    Click on the map to specify a new center point. ?
Zoom: 
Time range:    |<   -       
[The graph you specified. Please be patient.]

 

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:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Station {
    String ioos_category "Identifier";
    String long_name "Station";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5198624e+9, 1.62948852e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date Time";
    String source_name "Date_time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -79.71, -78.45;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "Longitude_east";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 51.95, 54.63;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String source_name "Latitude_north";
    String standard_name "latitude";
    String units "degrees_north";
  }
  sea_water_pressure_dbar {
    Float32 actual_range -0.00327, 38.0;
    String ioos_category "Pressure";
    String long_name "Sea Water Pressure  Dbar";
  }
  CTDSal_psu {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 348.86;
    String ioos_category "Salinity";
    String long_name "CTDSal Psu";
  }
  WC_temp_CTD_degC {
    Float32 _FillValue NaN;
    Float32 actual_range -1.29, 19.75;
    String ioos_category "Unknown";
    String long_name "WC Temp CTD Deg C";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "Centre for Earth Observation Science";
    String Data_collection_start_date "2018-01-23";
    String Dataset_Author "Peck, Chris";
    String Dataset_Author_Affiliation "Centre for Earth Observation Science - University of Manitoba";
    String Dataset_Author_Email "peckc@myumanitoba.ca";
    String Dataset_Contributor "Kuzyk, Zou Zou";
    String Dataset_Contributor_Afiliation "Centre for Earth Observation Science - University of Manitoba";
    String Dataset_Contributor_Email "zouzou.kuzyk@umanitoba.ca";
    String Dataset_Contributor_Role "Supervisor";
    String Dataset_Maintenance_&_Update_Frequency "Not planned";
    String Dataset_Status "Complete";
    Float64 Dataset_Version 1.0;
    Float64 Easternmost_Easting -78.45;
    String featureType "Point";
    Float64 geospatial_lat_max 54.63;
    Float64 geospatial_lat_min 51.95;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -78.45;
    Float64 geospatial_lon_min -79.71;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-10-20T20:59:58Z https://canwin-datahub.ad.umanitoba.ca/data/dataset/e-james-bay-moorings-ctds/resource/c32d4b2e-5423-4541-9471-be37915ac24d
2025-10-20T20:59:58Z http://CanWINerddap.ad.umanitoba.ca/tabledap/EJB_2018_2021_CTDs_96c2_a5f0_0733.das";
    String infoUrl "https://canwin-datahub.ad.umanitoba.ca/data/dataset/e-james-bay-moorings-ctds";
    String institution "Centre for Earth Observation Science";
    String keywords "Coastal dynamics, eelgrass, Rivers, Salinity, Temperature";
    String license "Creative Commons Attribution 4.0 International";
    Float64 Northernmost_Northing 54.63;
    String Project_Data_Curator "Peck, Chris";
    String Project_Data_Curator_Afiliation "Centre for Earth Observation Science - University of Manitoba";
    String Project_Data_Curator_Email "peckc@myumanitoba.ca";
    String Research_Area "Chisasibi";
    String Sample_collection_instrument_name "Hobo CT Logger,Hobo Water Level logger,Seametrics CT2X,RBR PAR,Alec CT,Castaway by Sontek";
    String sourceUrl "https://canwin-datahub.ad.umanitoba.ca/data/dataset/e-james-bay-moorings-ctds/resource/c32d4b2e-5423-4541-9471-be37915ac24d";
    Float64 Southernmost_Northing 51.95;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "Conductivity, Temperature, Depth (CTD) data collected in north east James Bay 2016-2017";
    String time_coverage_end "2021-08-20T19:42:00Z";
    String time_coverage_start "2018-03-01T00:00:00Z";
    String title "EastJamesBay_CTD_2018-21";
    String Type "Dataset";
    Float64 Westernmost_Easting -79.71;
  }
}

 

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.

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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