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ERDDAP > tabledap > Make A Graph ?

Dataset Title:  US Coast Guard SLDMB Drifter Data Subscribe RSS
Institution:  Rutgers Center for Ocean Observing Leadership   (Dataset ID: uscg_sldmb_drifters)
Range: longitude = -73.04102 to -68.69837°E, latitude = 39.19754 to 41.59135°N
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Data Access Form
 
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: 
[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 {
  BuoyNum {
    Int32 actual_range 63619840, 65243610;
    String ioos_category "Unknown";
    String long_name "Buoy Num";
  }
  BuoyUse {
    Byte actual_range 5, 5;
    String ioos_category "Unknown";
    String long_name "Buoy Use";
  }
  DateTime {
    String ioos_category "Time";
    String long_name "Date Time";
  }
  Disabled {
    String ioos_category "Unknown";
    String long_name "Disabled";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 39.197542, 41.591352;
    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 actual_range -73.041026, -68.69837;
    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";
  }
  Quality {
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Quality";
  }
  FOM {
    Byte actual_range 1, 3;
    String ioos_category "Unknown";
    String long_name "FOM";
  }
  Voltage {
    Byte actual_range 0, 0;
    String ioos_category "Unknown";
    String long_name "Voltage";
  }
  SST {
    Float64 actual_range 6.300000191, 21.29999924;
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
  }
  AltSensor {
    Byte actual_range 0, 0;
    String ioos_category "Unknown";
    String long_name "Alt Sensor";
  }
  Heading {
    Byte actual_range 0, 0;
    String ioos_category "Unknown";
    String long_name "Heading";
  }
  Speed {
    Byte actual_range 0, 0;
    String ioos_category "Currents";
    String long_name "Speed";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "Rutgers Center for Ocean Observing Leadership";
    String creator_type "group";
    String creator_url "https://marine.rutgers.edu/main/";
    Float64 Easternmost_Easting -68.69837;
    Float64 geospatial_lat_max 41.591352;
    Float64 geospatial_lat_min 39.197542;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -68.69837;
    Float64 geospatial_lon_min -73.041026;
    String geospatial_lon_units "degrees_east";
    String history 
"2019-12-09T03:12:19Z (local files)
2019-12-09T03:12:19Z http://hfr.marine.rutgers.edu/tabledap/uscg_sldmb_drifters.das";
    String infoUrl "https://marine.rutgers.edu/main/";
    String institution "Rutgers Center for Ocean Observing Leadership";
    String keywords "AltSensor, buoy, BuoyNum, BuoyUse, center, coast, currents, data, date, DateTime, disabled, drifter, fom, guard, heading, latitude, leadership, longitude, num, observing, ocean, quality, rutgers, sea, sensor, sldmb, speed, SST, surface, temperature, time, US, use, voltage";
    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.";
    Float64 Northernmost_Northing 41.591352;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 39.197542;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String subsetVariables "BuoyUse, Disabled, Quality, Voltage, AltSensor, Heading, Speed";
    String summary "US Coast Guard SLDMB Drifter Data";
    String title "US Coast Guard SLDMB Drifter Data";
    Float64 Westernmost_Easting -73.041026;
  }
}

 

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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