Make A Graph

Dataset Title:	Thiamine Deficiency in California Salmon
Institution:	NOAA/NMFS/SWFSC/FED (Dataset ID: Salmon_thiamine)
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 {
  sample_id {
    String ioos_category "Other";
    String long_name "Sample ID";
  }
  year {
    Int32 actual_range 2020, 2024;
    String ioos_category "Other";
    String long_name "Year";
  }
  sequence {
    Int32 actual_range 1, 12;
    String description "Used to order collections by time within each year";
    String ioos_category "Other";
    String long_name "Sequence Number";
  }
  collection_type {
    String ioos_category "Other";
    String long_name "Collection Type";
  }
  treatment_status {
    String ioos_category "Other";
    String long_name "Treatment status";
  }
  boat_hatchery {
    String ioos_category "Other";
    String long_name "Boat or Hatchery";
  }
  port_landed {
    String ioos_category "Other";
    String long_name "Port Landed";
  }
  collection_date {
    String ioos_category "Time";
    String long_name "Collection Date";
  }
  run {
    String ioos_category "Other";
    String long_name "Run";
  }
  stock {
    String ioos_category "Other";
    String long_name "Stock";
  }
  species {
    String ioos_category "Other";
    String long_name "Species";
  }
  adipose_fin {
    String ioos_category "Other";
    String long_name "Adipose Fin";
  }
  fl_mm {
    Int32 actual_range 412, 1005;
    String ioos_category "Other";
    String long_name "FL";
    String units "mm";
  }
  avg_total_egg_thi {
    Float32 actual_range 1.0, 60.8;
    String ioos_category "Other";
    String long_name "Ave Total Egg Thiamine";
    String units "nmol/g";
  }
  egg_thi_status {
    String description "Low thiamine (<5nmol/g); Intermediate (>5nmol/g but <8nmol/g); High thiamine (>8 nmol/g)";
    String ioos_category "Other";
    String long_name "Egg Thiamine status";
  }
  cwt {
    Int32 actual_range 54778, 68729;
    String ioos_category "Other";
    String long_name "CWT";
  }
  brood_year {
    Int32 actual_range 2016, 2020;
    String ioos_category "Other";
    String long_name "Brood year";
  }
  stock_id {
    String ioos_category "Other";
    String long_name "Stock ID";
  }
  release_site {
    String ioos_category "Other";
    String long_name "Release Site";
  }
  release_date {
    String ioos_category "Other";
    String long_name "Release Date";
  }
  origin {
    String ioos_category "Other";
    String long_name "Origin";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "CF-1.6, ACDD-1.3, COARDS, NCCSV-1.1";
    String defaultGraphQuery "fl_mm,avg_total_egg_thi,year&.draw=markers&.marker=5|5&.colorBar=%7CD%7C%7C2020%7C2023%7C3";
    String history 
"2024-05-03T19:28:42Z (local files)
2024-05-03T19:28:42Z http://upwell.pfeg.noaa.gov/tabledap/Salmon_thiamine.das";
    String infoUrl "https://www.fisheries.noaa.gov/west-coast/science-data/monitoring-thiamine-deficiency-california-salmon";
    String institution "NOAA/NMFS/SWFSC/FED";
    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 "rachel.johnson@noaa.gov";
    String publisher_name "Rachel Johnsom";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "sample_id,year,collection_type,treatment_status,boat_hatchery,port_landed,collection_date,run,stock,species,adipose_fin,egg_thi_status,brood_year,stock_id,release_site,release_date,origin";
    String summary "Scientists are now teaming up with charter fishing boat operators in the summer of 2021 to collect certain parts of the salmon caught by the anglers aboard. The heads, stomachs, and eggs of Chinook salmon that have been feeding in the ocean off the California Coast can help researchers understand what is causing thiamine deficiency, and what might help remedy or mitigate its effects.";
    String title "Thiamine Deficiency in California Salmon";
  }
}

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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