National Antarctic Data Center - ERDDAP
Easier access to scientific data

Make A Graph

Dataset Title:	Vegetation monitoring along PERMVEG-NET
Institution:	University of Insubria (Dataset ID: b228adda-3456-4a2a-bff9-57e1710ad442)
Information:	Summary \| License \| Metadata \| Background

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Graph Type:

X Axis:

Y Axis:

Color:

Constraints	Optional 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

Marker Type:

Size:

Color:

Color Bar:

Continuity:

Scale:

Minimum:

Maximum:

N Sections:

Y Axis Minimum:

Maximum:

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

Optional:
Then set the File Type: (File Type information)
and

or view the URL:
(Documentation / Bypass this form

)

[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:

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 {
  url {
  }
  name {
  }
  lastModified {
  }
  size {
  }
  fileType {
    String extractGroup "1";
    String extractRegex ".*(\\..+?)";
    String ioos_category "Identifier";
    String long_name "File Type";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String contributor_email "nicoletta.cannone@uninsubria.it";
    String contributor_institution "University of Insubria";
    String contributor_name "Nicoletta Cannone";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "nicoletta.cannone@uninsubria.it";
    String creator_name "Nicoletta Cannone";
    String creator_url "https://www.pnra.aq/it/project/718/rete-di-monitoraggio-del-permafrost-e-della-vegetazione-antartide-continentale";
    String history 
"The total cover has been obtained by visual estimation with an accuracy of 1% over the all plot. The species richness indicate the total number of lichens and mosses plus the macrocategories of algae and cyanobacteria occurring at each plot. Finally the dominant species are the one or as maximum two showing the highest cover percentage of all the occurring species. Datasets are initially uploaded to the NADC ERDDAP instance with restricted access (authentication required). They will be made publicly available following publication of the associated paper. For further information, please contact the Principal Investigator (PI).
2026-06-08T21:20:33Z (local files)
2026-06-08T21:20:33Z https://antarcticdatacenter.cnr.it/tabledap/b228adda-3456-4a2a-bff9-57e1710ad442.das";
    String infoUrl "https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/fb76df45-1654-46c0-b827-b4252769fe0f";
    String institution "University of Insubria";
    String license "CC-BY 4.0";
    String publisher_name "National Antarctic Data Center of Italy";
    String publisher_type "group";
    String publisher_url "https://iandc.pnra.aq";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "In the Project PermVegNet (OSS-12) there are 15 sites between 73 and 78Â°S in which vegetation is monitored every 3 years on a variable number of plots (from 1 to a maximum of 3 for each site) with a 2x2 m size. The vegetation monitoring is performed through the phytosociological method and provides total cover (%), species richness and the dominant species.";
    String title "Vegetation monitoring along PERMVEG-NET";
  }
}

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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