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ERDDAP > tabledap > Make A Graph ?

Dataset Title:  * The List of All Active Datasets in this ERDDAP *   RSS
Institution:  Marine Institute Ireland   (Dataset ID: allDatasets)
Information:  Summary ? | License ? | Metadata | Background | Subset | Data Access Form
 
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    [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 {
  datasetID {
    String fileAccessBaseUrl "https://erddap.marine.ie/erddap/info/";
    String fileAccessSuffix "/index.html";
    String ioos_category "Other";
    String long_name "Dataset ID";
  }
  accessible {
    String comment "Some datasets are public. Some may be private and perhaps not accessible to you.";
    String ioos_category "Other";
    String long_name "Accessible";
  }
  institution {
    String ioos_category "Other";
    String long_name "Institution";
  }
  dataStructure {
    String comment "ERDDAP treats each dataset as either a 'grid' or a 'table' dataset.";
    String ioos_category "Other";
    String long_name "Data Structure";
    String references "https://coastwatch.pfeg.noaa.gov/erddap/download/setupDatasetsXml.html#dataStructures";
  }
  cdm_data_type {
    String ioos_category "Other";
    String long_name "Common Data Model Type";
    String references "https://coastwatch.pfeg.noaa.gov/erddap/download/setupDatasetsXml.html#cdm_data_type";
  }
  class {
    String ioos_category "Other";
    String long_name "ERDDAP Class";
    String references "https://coastwatch.pfeg.noaa.gov/erddap/download/setupDatasetsXml.html#datasetTypes";
  }
  title {
    String ioos_category "Other";
    String long_name "Title";
  }
  minLongitude {
    String ioos_category "Location";
    String long_name "Minimum Longitude";
    String units "degrees_east";
  }
  maxLongitude {
    String ioos_category "Location";
    String long_name "Maximum Longitude";
    String units "degrees_east";
  }
  longitudeSpacing {
    String ioos_category "Location";
    String long_name "Average Grid Longitude Spacing";
    String units "degrees_east";
  }
  minLatitude {
    String ioos_category "Location";
    String long_name "Minimum Latitude";
    String units "degrees_north";
  }
  maxLatitude {
    String ioos_category "Location";
    String long_name "Maximum Latitude";
    String units "degrees_north";
  }
  latitudeSpacing {
    String ioos_category "Location";
    String long_name "Average Grid Latitude Spacing";
    String units "degrees_north";
  }
  minAltitude {
    String ioos_category "Location";
    String long_name "Minimum Altitude or -Depth";
    String positive "up";
    String units "m";
  }
  maxAltitude {
    String ioos_category "Location";
    String long_name "Maximum Altitude or -Depth";
    String positive "up";
    String units "m";
  }
  minTime {
    String ioos_category "Time";
    String long_name "Minimum Time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  maxTime {
    String comment "If dataStructure=table and minTime is specified and maxTime isn't, then this is a near-real-time dataset.";
    String ioos_category "Time";
    String long_name "Maximum Time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  timeSpacing {
    String ioos_category "Time";
    String long_name "Average Grid Time Spacing";
    String units "seconds";
  }
  griddap {
    String comment "Add .html to see a data request web page.";
    String ioos_category "Other";
    String long_name "Base URL of OPeNDAP Grid Service";
  }
  subset {
    String ioos_category "Other";
    String long_name "URL of Subset Web Page";
  }
  tabledap {
    String comment "Add .html to see a data request web page.";
    String ioos_category "Other";
    String long_name "Base URL of OPeNDAP Table/Sequence Service";
  }
  MakeAGraph {
    String ioos_category "Other";
    String long_name "URL of Make-A-Graph Web Page";
  }
  sos {
    String comment "Or, replace 'service' with 'index.html' to see a web page with SOS information.";
    String ioos_category "Other";
    String long_name "Base URL of SOS Service";
  }
  wcs {
    String ioos_category "Other";
    String long_name "Base URL of WCS Service";
  }
  wms {
    String ioos_category "Other";
    String long_name "Base URL of WMS Service";
  }
  files {
    String comment "The /files/ services lets you browse and download source files.";
    String ioos_category "Other";
    String long_name "Base URL of /files/ Service";
  }
  fgdc {
    String comment "The FGDC .xml document has geographic metadata.";
    String ioos_category "Other";
    String long_name "URL of FGDC Document";
  }
  iso19115 {
    String comment "The ISO 19115 .xml document has geographic metadata.";
    String ioos_category "Other";
    String long_name "URL of ISO 19115 Document";
  }
  metadata {
    String comment "To make a complete URL, add .htmlTable, .csv, .tsv, .json, .xhtml, ... to the Base URL.";
    String ioos_category "Other";
    String long_name "Base URL of a Table with Metadata";
  }
  sourceUrl {
    String ioos_category "Other";
    String long_name "URL of the Source Data";
  }
  infoUrl {
    String ioos_category "Other";
    String long_name "URL of Background Information (from the source)";
  }
  rss {
    String ioos_category "Other";
    String long_name "URL of RSS";
  }
  email {
    String comment "To subscribe, add your email address to the Base URL.";
    String ioos_category "Other";
    String long_name "Base URL of Email Subscription";
  }
  testOutOfDate {
    String comment "This is the value of the dataset's testOutOfDate attribute. A dataset is considered out-of-date when its max(time) is before this testOutOfDate time. For out-of-date datasets, there is presumably a problem with the data source, so ERDDAP is unable to access data from more recent time points.";
    String ioos_category "Other";
    String long_name "testOutOfDate Attribute";
  }
  outOfDate {
    String comment "The outOfDate index is a simplistic measure of how out-of-date a dataset is: <0: unexpectedly from the future(!), <1: up-to-date, >=1: out-of-date, >=2: very out-of-date. For out-of-date datasets, there is presumably a problem with the data source, so ERDDAP is unable to access data from more recent time points.";
    String ioos_category "Other";
    String long_name "Out-Of-Date Index";
  }
  summary {
    String ioos_category "Other";
    String long_name "Summary Text";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "datarequests@marine.ie";
    String creator_name "Data Requests";
    String creator_url "https://erddap.marine.ie/erddap";
    String defaultGraphQuery "maxLongitude,maxLatitude";
    String history 
"2018-11-17T00:25:14Z https://erddap.marine.ie/erddap
2018-11-17T00:25:14Z https://erddap.marine.ie/tabledap/allDatasets.das";
    String infoUrl "https://erddap.marine.ie/erddap";
    String institution "Marine Institute Ireland";
    String keywords "19115, accessible, altitude, average, background, base, dataset, depth, email, erddap, fgdc, graph, grid, information, institution, iso, latitude, location, longitude, make-a-graph, maximum, metadata, minimum, opendap, rss, sequence, service, sos, source, spacing, structure, subscription, subset, summary, table, time, title, url, wcs, wms";
    String license "Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/)";
    String sourceUrl "https://erddap.marine.ie/erddap";
    String subsetVariables "accessible, dataStructure, cdm_data_type, class, institution, testOutOfDate";
    String summary "This dataset is a table which has a row of information for each dataset currently active in this ERDDAP.";
    String title "* The List of All Active Datasets in this ERDDAP *";
  }
}

 

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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