ERDDAP
Easier access to scientific data

Brought to you by NOAA NMFS SWFSC ERD

Make A Graph

Dataset Title:	ROMS South China Sea OBS FILE
Institution:	Institute for Marine and Coastal Sciences, Rutgers University (Dataset ID: SCSobs)
Range:	longitude = 90.0 to 130.0°E, latitude = -2.0 to 30.0°N, depth = 0.0 to 11079.37m, time = 2016-01-01T00:00:00Z to 2017-03-01T12:40:01Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

To work correctly, this web page requires that JavaScript be enabled in your browser. Please:
1) Enable JavaScript in your browser:
      • Chrome: "Settings : Advanced : Privacy and security : Site Settings : JavaScript"
      • Firefox: (it should be always on!)"
      • Opera: "Settings : Websites : JavaScript"
      • Safari: "Safari : Preferences : Security : Enable JavaScript"
2) Reload this web page.

Graph Type:

X Axis:

Y Axis:

Color:

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.

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:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.4516064e+9, 1.48837200192e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "time of observation";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 0.0, 11079.369;
    String axis "Z";
    String ioos_category "Location";
    String long_name "depth of observation";
    String negative "downwards";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -2.0, 30.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "latitude of observation";
    String standard_name "latitude";
    String units "degrees_north";
    Float32 valid_max 90.0;
    Float32 valid_min -90.0;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 90.0, 130.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "longitude of observation";
    String standard_name "longitude";
    String units "degrees_east";
    Float32 valid_max 180.0;
    Float32 valid_min -180.0;
  }
  value {
    Float32 actual_range -249.51, 232.79404;
    String ioos_category "Other";
    String long_name "observation value";
    String units "state variable units";
  }
  type {
    Float32 actual_range 6.0, 7.0;
    String ioos_category "Other";
    String long_name "model state variable associated with observation";
    String option_1 "free-surface";
    String option_2 "vertically integrated u-momentum component";
    String option_3 "vertically integrated v-momentum component";
    String option_4 "u-momentum component";
    String option_5 "v-momentum component";
    String option_6 "potential temperature";
    String option_7 "salinity";
  }
  provenance {
    Float32 actual_range -99999.0, 3011.0;
    String history 
"C-MAN WEATHER STATIONS:3000
    DRIFTING BUOYS (GENERIC):3001
    HURRICANE DRIFTERS:3002
    MOORED BUOYS (GENERIC):3003
    PROFILING FLOATS AND GLIDERS (GENERIC):3004
    SHIPS (GENERIC):3005
    TIDE GAUGE STATIONS (GENERIC):3006
    UNKNOWN:3007
    VOLUNTEER OBSERVING SHIPS (GENERIC):3008
    VOSCLIM:3009
    WEATHER BUOYS:3010
    GLIDERS:3011";
    String ioos_category "Other";
    Float64 OSMC_PROVENANCE 3000.0;
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "CF-1.6";
    Float64 Easternmost_Easting 130.0;
    String featureType "Point";
    Float64 geospatial_lat_max 30.0;
    Float64 geospatial_lat_min -2.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 130.0;
    Float64 geospatial_lon_min 90.0;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 11079.37;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"Created by /home/om/cron/osmc_SCS/osmc_handler.m on 2017-03-01 08:29:03 using /home/om/cron/osmc_SCS/osmc_SCS.xml by Eli Hunter
2024-04-23T15:43:47Z http://tds.marine.rutgers.edu
2024-04-23T15:43:47Z https://tds.marine.rutgers.edu/tabledap/SCSobs.das";
    String infoUrl "https://marine.rutgers.edu/cool";
    String institution "Institute for Marine and Coastal Sciences, Rutgers University";
    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 30.0;
    String sourceUrl "http://tds.marine.rutgers.edu";
    Float64 Southernmost_Northing -2.0;
    String state_units "Free-sruface (m), 2D momentum (m/s), 3D momentum (m/s), potential temperature (Celsius), salinity (PSU)";
    String subsetVariables "type,provenance";
    String summary "ROMS OBSERVATION FILE";
    String time_coverage_end "2017-03-01T12:40:01Z";
    String time_coverage_start "2016-01-01T00:00:00Z";
    String title "ROMS South China Sea OBS FILE";
    String type "ROMS Observation file";
    Float64 Westernmost_Easting 90.0;
  }
}

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.

(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

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.

ERDDAP, Version 2.23
Disclaimers | Privacy Policy | Contact