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ERDDAP > tabledap > Make A Graph ?

Dataset Title:  Galway Bay Observatory CTD data   RSS
Institution:  Marine Institute   (Dataset ID: spiddal_obs_ctd)
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() ?
? (" ")
 
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: 
[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 {
  instrument_id {
    String ioos_category "Identifier";
    String long_name "Instrument Id";
  }
  time {
    String _CoordinateAxisType "Time";
    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";
  }
  cond {
    String ioos_category "Unknown";
    String long_name "Cond";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum 0.0;
    String colorBarPalette "OceanDepth";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    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";
    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";
  }
  press {
    String ioos_category "Unknown";
    String long_name "Press";
  }
  sal {
    String ioos_category "Unknown";
    String long_name "Sal";
  }
  soundv {
    String ioos_category "Unknown";
    String long_name "Soundv";
  }
  temp {
    String ioos_category "Temperature";
    String long_name "Temperature";
  }
  ttime {
    String ioos_category "Unknown";
    String long_name "Ttime";
  }
  dissolved_oxygen_ppm {
    String ioos_category "Unknown";
    String long_name "Dissolved_Oyxgen_PPM";
  }
  dissolved_oxygen_sat {
    String ioos_category "Unknown";
    String long_name "Dissolved_Oyxgen_Sat";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "Marine Institute";
    String creator_url "http://spiddal.marine.ie/gallery/";
    String defaultDataQuery "&time>=now-30minutes";
    String defaultGraphQuery "longitude,latitude,temp&time>=now-30minutes&.marker=5|5";
    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 
"2018-10-15T23:29:51Z (Cassandra)
2018-10-15T23:29:51Z https://erddap.marine.ie/tabledap/spiddal_obs_ctd.das";
    String infoUrl "http://spiddal.marine.ie/gallery/";
    String institution "Marine Institute";
    String keywords "altimetry, cond, conductivity, ctd, data, depth, identifier, institute, instrument, instrument_id, laboratory, latitude, local, longitude, marine, observatory, press, sal, satellite, sonde, soundv, source, temperature, time, ttime";
    String license "Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/)";
    String sourceUrl "(Cassandra)";
    String standard_name_vocabulary "CF Standard Name Table v29";
    String subsetVariables "instrument_id";
    String summary "Spiddal, Galway Bay Observatory Conductivity, Temperature, Depth (CTD) data. Marine Institute data from a local source.";
    String title "Galway Bay Observatory CTD data";
  }
}

 

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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