Make A Graph

Dataset Title:	International Billfish Angler Survey (Individual Records)
Institution:	NOAA/NMFS/SWFSC/FRD (Dataset ID: FRD_Billfish_raw)
Information:	Summary \| License \| Metadata \| Background \| Subset \| Data Access Form \| Files

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Server-side Functions

distinct()

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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 {
  year {
    Int32 _FillValue 2147483647;
    Int32 actual_range 1984, 2019;
    String ioos_category "Time";
    String long_name "Year";
  }
  seq {
    Int32 _FillValue 2147483647;
    Int32 actual_range 16, 48847;
    String ioos_category "Other";
    String long_name "Constituent sequence number";
  }
  location_cd {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 130;
    String ioos_category "Other";
    String long_name "Fishing Location Code";
  }
  location {
    String ioos_category "Other";
    String long_name "Fishing location";
  }
  ocean {
    String ioos_category "Other";
    String long_name "Ocean";
  }
  effort {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 4728;
    String description "Number of whole days fished in survey year, regardless of catch";
    String ioos_category "Other";
    String long_name "Effort";
    String units "days";
  }
  blue_marlin_catch {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 149;
    String ioos_category "Other";
    String long_name "Blue Marlin Catch";
  }
  black_marlin_catch {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 112;
    String ioos_category "Other";
    String long_name "Black Marlin Catch";
  }
  striped_marlin_catch {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 7243;
    String ioos_category "Other";
    String long_name "Striped Marlin Catch";
  }
  sailfish_catch {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 6356;
    String ioos_category "Other";
    String long_name "Sailfish Catch";
  }
  spearfish_catch {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 111;
    String ioos_category "Other";
    String long_name "Spearfish Catch";
  }
  swordfish_catch {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 1147;
    String ioos_category "Other";
    String long_name "Swordfish Catch";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "CF-1.6, ACDD-1.3, COARDS, NCCSV-1.1";
    String defaultGraphQuery "year,blue_marlin_catch,effort&location=\"Hawaii, USA\"&.draw=markers&.marker=5|5&.colorBar=|||0|366|";
    String history 
"2024-05-03T20:06:57Z (local files)
2024-05-03T20:06:57Z http://upwell.pfeg.noaa.gov/tabledap/FRD_Billfish_raw.das";
    String infoUrl "https://www.fisheries.noaa.gov/inport/item/56756";
    String institution "NOAA/NMFS/SWFSC/FRD";
    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 publisher_email "nicole.nasby-lucas@noaa.gov";
    String publisher_name "Nicole Nasby-Lucas";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "year,location,ocean,seq";
    String summary "The International Billfish Angler Survey of the Cooperative Billfish Tagging Program (CBTP) provides estimates of billfish angling activities in the Pacific and Indian Oceans from voluntary self-reported angler surveys occurring since 1969. The CBTP sends out surveys (hardcopy from 1969 to 2017, digital from 2017 to 2019) to participating anglers at the beginning of each calendar year to report their catch and effort in the prior year. Anglers report the number of whole fishing days per fishing location as yearly effort, and report billfish catch (kept or released) by species at each location. The data presented cover the calendar years 1984-2019 and is grouped by individual angler, year, and location for the following summed metrics: fishing effort (whole days), blue marlin catch, black marlin catch, striped marlin catch, spearfish catch, and swordfish catch. Also see https://repository.library.noaa.gov/view/noaa/28449/";
    String title "International Billfish Angler Survey (Individual Records)";
  }
}

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://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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