ERDDAP
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Make A Graph

Dataset Title:	Data from a local source.
Institution:	??? (Dataset ID: MBON_FKNMS)
Information:	Summary \| License \| Metadata \| Background \| Data Access Form

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Graph Type:
X Axis:
Y Axis:
Color:

Dimensions

Start

Stop

time (UTC)

c (count)

specify just 1 value →

r (count)

specify just 1 value →

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

)

Time range:

[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 {
  time {
    String _CoordinateAxesType "Time";
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.1057472e+9, 1.2292992e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "date time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  c {
    Int16 actual_range 0, 500;
    String ioos_category "Unknown";
    String long_name "C";
    String units "count";
  }
  r {
    Int16 actual_range 0, 400;
    String ioos_category "Unknown";
    String long_name "R";
    String units "count";
  }
  seascape {
    String ioos_category "Unknown";
    String long_name "seascape";
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.internal.dataset.conv.DefaultConventions";
    String cdm_data_type "Grid";
    String Conventions "COARDS, CF-1.6, Unidata Dataset Discovery v1.0";
    String history 
"2023-03-31T20:02:44Z (local files)
2023-03-31T20:02:44Z http://erddap.axiomdatascience.com/griddap/MBON_FKNMS.das";
    String infoUrl "???";
    String institution "???";
    String keywords "data, local, seascape, source";
    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 Metadata_Conventions "COARDS, CF-1.6, Unidata Dataset Discovery v1.0";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF-12";
    String summary "Data from a local source.";
    String time_coverage_end "2008-12-15T00:00:00Z";
    String time_coverage_start "2005-01-15T00:00:00Z";
    String title "Data from a local source.";
  }
}

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its projection 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. It makes 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.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.

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