Make A Graph

Dataset Title:	STP Spotter Buoy. PROVISIONAL DATA SUBJECT TO REVISION.
Institution:	U.S. Geological Survey (Dataset ID: barometricPressure-MadBeach)
Range:	longitude = -83.09562 to -82.63752°E, latitude = 27.715 to 27.812384°N, time = 2022-09-22T21:02:31Z to 2024-09-26T17:18:02Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

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Graph Type:

X Axis:

Y Axis:

Color:

Constraints

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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

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N Sections:

Draw land mask:

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(Please be patient. It may take a while to get the data.)

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Then set the File Type: (File Type information)
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or view the URL:
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Click on the map to specify a new center point.

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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 1.663880551e+9, 1.727371082e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    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";
  }
  units {
    String ioos_category "Unknown";
    String long_name "Units";
  }
  value {
    Float64 _FillValue NaN;
    Float64 actual_range 996.1, 1032.8000000000002;
    String ioos_category "Unknown";
    String long_name "Value";
  }
  unit_type {
    String ioos_category "Unknown";
    String long_name "Unit Type";
  }
  data_type_name {
    String ioos_category "Unknown";
    String long_name "Data Type Name";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 27.715, 27.8123833;
    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 -83.0956167, -82.6375167;
    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";
  }
  feature_type_instance {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "station code";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "feature_type_instance, latitude, longitude";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_name "U.S. Geological Survey";
    String creator_url "https://www.usgs.gov/";
    Float64 Easternmost_Easting -82.6375167;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 27.8123833;
    Float64 geospatial_lat_min 27.715;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -82.6375167;
    Float64 geospatial_lon_min -83.0956167;
    String geospatial_lon_units "degrees_east";
    String history 
"Generated using sofar-smart-mooring.py
2024-12-01T20:27:23Z (local files)
2024-12-01T20:27:23Z https://geoport.usgs.esipfed.org/tabledap/barometricPressure-MadBeach.das";
    String infoUrl "https://www.usgs.gov/";
    String institution "U.S. Geological Survey";
    String keywords "buoy, code, currents, data, direction, feature_type_instance, geological, identifier, latitude, longitude, provisional, revision, seasurface, seasurfaceId, speed, spotter, station, stp, subject, survey, time, US";
    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.usgs.cmgp";
    Float64 Northernmost_Northing 27.8123833;
    String original_folder "barometricPressure";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 27.715;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "feature_type_instance";
    String summary "STP Spotter Buoy. PROVISIONAL DATA SUBJECT TO REVISION.";
    String testOutOfDate "now-1day";
    String time_coverage_end "2024-09-26T17:18:02Z";
    String time_coverage_start "2022-09-22T21:02:31Z";
    String title "STP Spotter Buoy. PROVISIONAL DATA SUBJECT TO REVISION.";
    Float64 Westernmost_Easting -83.0956167;
  }
}

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.

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