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ERDDAP > tabledap > Make A Graph ?

Dataset Title:  SWFSC Protected Resources Division CTD Data Subscribe RSS
Institution:  NOAA SWFSC PRD   (Dataset ID: erdPrdCtd)
Range: longitude = -155.852 to -77.55°E, latitude = -18.038 to 47.705°N, time = 1998-08-01T18:17:00Z to 2001-12-03T21:35:00Z
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: 
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 {
  trajectory {
    Int32 actual_range 0, 0;
    String cf_role "trajectory_id";
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Identifier";
    String long_name "Trajectory";
  }
  ship_station {
    String ioos_category "Identifier";
    String long_name "Ship and Station";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 _FillValue NaN;
    Float32 actual_range -155.852, -77.55;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    Float32 missing_value NaN;
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 _FillValue NaN;
    Float32 actual_range -18.038, 47.705;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    Float32 missing_value NaN;
    String standard_name "latitude";
    String units "degrees_north";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 9.0199542e+8, 1.0074153e+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";
  }
  chloro {
    Float32 _FillValue -9999999.0;
    Float32 actual_range 0.001, 6.214;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String ioos_category "Ocean Color";
    String long_name "Surface Chlorophyll";
    Float32 missing_value -9999999.0;
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "ug L-1";
  }
  phaeo {
    Float32 _FillValue -9999999.0;
    Float32 actual_range 0.0, 2.203;
    Float64 colorBarMaximum 3.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Ocean Color";
    String long_name "Surface Phaeophytin";
    Float32 missing_value -9999999.0;
    String units "ug L-1";
  }
  productivity {
    Float32 _FillValue -9999999.0;
    Float32 actual_range 27.17, 12402.69;
    Float64 colorBarMaximum 12500.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Productivity";
    String long_name "Integrated Euphotic Zone Productivity";
    Float32 missing_value -9999999.0;
    String units "mg Carbon m-2 day-1";
  }
  sst {
    Float32 _FillValue -9999999.0;
    Float32 actual_range 13.5, 30.73;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
    Float32 missing_value -9999999.0;
    String standard_name "sea_surface_temperature";
    String units "degree_C";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Trajectory";
    String cdm_trajectory_variables "trajectory";
    String Conventions "COARDS, CF-1.6, ACDD-1.3, NCCSV-1.0";
    Float64 Easternmost_Easting -77.55;
    String featureType "Trajectory";
    Float64 geospatial_lat_max 47.705;
    Float64 geospatial_lat_min -18.038;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -77.55;
    Float64 geospatial_lon_min -155.852;
    String geospatial_lon_units "degrees_east";
    String history 
"2018-07-20T06:28:29Z (local files; contact erd.data@noaa.gov)
2018-07-20T06:28:29Z http://upwell.pfeg.noaa.gov/tabledap/erdPrdCtd.das";
    String id "PRD_ctd";
    String infoUrl "https://swfsc.noaa.gov/PRD/";
    String institution "NOAA SWFSC PRD";
    String keywords "chemistry, chlorophyll, color, concentration, concentration_of_chlorophyll_in_sea_water, ctd, data, density, division, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Chemistry > Pigments, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Salinity/Density > Salinity, euphotic, identifier, integrated, noaa, ocean, ocean color, oceans, phaeophytin, pigments, prd, productivity, protected, resources, salinity, sea, sea_surface_temperature, seawater, ship, station, surface, swfsc, temperature, time, trajectory, water, zone";
    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 naming_authority "gov.noaa.pfeg.coastwatch";
    Float64 Northernmost_Northing 47.705;
    String sourceUrl "(local files; contact erd.data@noaa.gov)";
    Float64 Southernmost_Northing -18.038;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String subsetVariables "trajectory, ship_station, longitude, latitude, time";
    String summary "Data from NOAA SWFSC Protected Resources Division (PRD).";
    String time_coverage_end "2001-12-03T21:35:00Z";
    String time_coverage_start "1998-08-01T18:17:00Z";
    String title "SWFSC Protected Resources Division CTD Data";
    Float64 Westernmost_Easting -155.852;
  }
}

 

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://upwell.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://upwell.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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