Data Access Form

Dataset Title:	Datalog Crosswalk, West Coast Node
Institution:	NOAA/CoastWatch/West Coast (Dataset ID: wcn_log_crosswalk)
Information:	Summary \| License \| Metadata \| Background \| Subset \| Files

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

dataset_id

"NOAA_DHW"

"sardine_habitat_vi..."

group_title

data_source

dataset_title

variable (Variable in Dataset)

sensor

"ASCAT-A"

"viirs-snpp-n20"

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

File type: (more information)

(Documentation / Bypass this form )

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

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  dataset_id {
    String ioos_category "Identifier";
    String long_name "Dataset ID";
  }
  group_title {
    String ioos_category "Unknown";
    String long_name "Group Title";
  }
  data_source {
    String ioos_category "Unknown";
    String long_name "Agency Providing Satellite Data";
  }
  dataset_title {
    String ioos_category "Unknown";
    String long_name "Dataset Title";
  }
  variable {
    String ioos_category "Unknown";
    String long_name "Variable in Dataset";
  }
  sensor {
    String ioos_category "Unknown";
    String long_name "Sensor";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String history 
"2024-10-10T03:51:02Z (local files)
2024-10-10T03:51:02Z https://polarwatch.noaa.gov/erddap/tabledap/wcn_log_crosswalk.html";
    String infoUrl "https://coastwatch.pfeg.noaa.gov/";
    String institution "NOAA/CoastWatch/West Coast";
    String keywords "data, data_source, data_volume, dataset, dataset_title, group, group_title, i_dataset_id, identifier, local, requests, sensor, source, title, volume, \\u00c3\\u00af\\u00c2\\u00bb\\u00c2\\u00bfdataset";
    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 sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "group_title, data_source, dataset_title, variable";
    String summary "A curated list of ERDDAP dataset IDs are associated with features that allow sorting into useful groupings.";
    String title "Datalog Crosswalk, West Coast Node";
  }
}

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.