Data Access Form

Dataset Title:	Audio data from a local source.
Institution:	??? (Dataset ID: testGridWav)
Information:	Summary \| License \| Metadata \| Background \| Files \| Make a graph

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Dimensions	Size	Spacing
time (UTC)	2	5m 0s (even)

elapsedTime (seconds)	28800000	1.041667E-5 (even)

Grid Variables (which always also download all of the dimension variables)

channel_1

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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.4163561e+9, 1.4163564e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  elapsedTime {
    Float64 actual_range 0.0, 299.99998958333333;
    String ioos_category "Time";
    String long_name "Elapsed Time";
    String units "seconds";
  }
  channel_1 {
    Float64 colorBarMaximum 33000.0;
    Float64 colorBarMinimum -33000.0;
    String ioos_category "Other";
    String long_name "Channel 1";
  }
  NC_GLOBAL {
    String audioBigEndian "false";
    Int32 audioChannels 1;
    String audioEncoding "PCM_SIGNED";
    Float32 audioFrameRate 96000.0;
    Int32 audioFrameSize 2;
    Float32 audioSampleRate 96000.0;
    Int32 audioSampleSizeInBits 16;
    String cdm_data_type "Grid";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String defaultDataQuery "&time=min(time)";
    String defaultGraphQuery "channel_1[0][(0):(1)]&.draw=lines&.vars=elapsedTime|time";
    String history 
"2024-12-22T02:16:43Z (local files)
2024-12-22T02:16:43Z https://coastwatch.pfeg.noaa.gov/erddap/griddap/testGridWav.das";
    String infoUrl "???";
    String institution "???";
    String keywords "channel_1, data, elapsedTime, local, source, time";
    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 summary "Audio data from a local source.";
    String time_coverage_end "2014-11-19T00:20:00Z";
    String time_coverage_start "2014-11-19T00:15:00Z";
    String title "Audio 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.