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ERDDAP > tabledap > Make A Graph ?

Dataset Title:  Environmental Monitors on Lobster Traps   RSS
Institution:  NOAA/NMFS/NEFSC   (Dataset ID: nefsc_emolt_erddap)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
Graph Type:  ?
X Axis: 
Y Axis: 
Color: 
-1 +1
 
Constraints ? Optional
Constraint #1 ?
Optional
Constraint #2 ?
       
       
       
       
       
 
Server-side Functions ?
 distinct() ?
? (" ")
 
Graph Settings
Marker Type:   Size: 
Color: 
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   Ascending: 
 
(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 {
  time {
    String _CoordinateAxisType "Time";
    String axis "T";
    String ioos_category "Time";
    String long_name "UTC Date";
    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";
    String axis "Y";
    String ioos_category "Location";
    String long_name "Degrees Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    String axis "X";
    String ioos_category "Location";
    String long_name "Degrees Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  sea_water_temperature {
    String ioos_category "Temperature";
    String long_name "Sea Water Temperature";
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
 }
  NC_GLOBAL {
    String acknowledgment "NOAA Northeast Consortium and Northeast Cooperative Research";
    String cdm_data_type "Point";
    String contributor_name "Gulf of Maine Lobster Foundation";
    String contributor_role "Data Manager";
    String Conventions "COARDS, CF-1.10, ACDD-1.3, NCCSV-1.2";
    String creator_email "[email protected]";
    String creator_name "NOAA NEFSC";
    String date_created "2003-01-01";
    String featureType "Point";
    String geospatial_lat_units "degrees_north";
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2013-01-01 reformatted from OPeNDAP to ERDDAP and converted to metric variables
2024-03-29T07:40:53Z (source database)
2024-03-29T07:40:53Z http://www.neracoos.org/tabledap/nefsc_emolt_erddap.das";
    String infoUrl "https://www.fisheries.noaa.gov/new-england-mid-atlantic/science-data/cooperative-research-northeast#cooperative-environmental-monitoring";
    String institution "NOAA/NMFS/NEFSC";
    String keywords "ocean, seawater, temperature";
    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 processing_level "3";
    String sourceUrl "(source database)";
    String summary "This is a collection of hourly bottom temperatures (~0.2 degC accuracy) from lobster traps at dozens of fixed locations off the Northeast US beginning in 2001.";
    String title "Environmental Monitors on Lobster Traps";
  }
}

 

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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