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Dataset Title:	OCNMS - Makah Bay: ADCP - Currents Data
Institution:	Olympic Coast NMS (Dataset ID: ocnms_mb42_lander_adcp)
Information:	Summary \| License \| Metadata \| Background \| Data Access Form \| Files

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Graph Type:
X Axis:
Y Axis:
Color:

Dimensions

Start

Stop

time (UTC)

depth (m)

Graph Settings
Color Bar:	Continuity:	Scale:
Minimum:	Maximum:	N Sections:
Y Axis Minimum:	Maximum:

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Then set the File Type: (File Type information)
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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 _CoordinateAxisType "Time";
    Float64 actual_range 1.778273228078e+9, 1.778775423011e+9;
    String axis "T";
    String calendar "gregorian";
    String description "time of sampling";
    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";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 3.81, 37.82;
    String axis "Z";
    String description "depth below water surface";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String positive_direction "down";
    String standard_name "depth";
    String units "m";
  }
  correlation_beam1 {
    String description "correlation magnitude for beam 1; 255 = perfect correlation";
    String ioos_category "Unknown";
    String long_name "Correlation Beam1";
    Float64 missing_value -32768;
    String range "0-255";
    String units "--";
  }
  correlation_beam2 {
    String description "correlation magnitude for beam 2; 255 = perfect correlation";
    String ioos_category "Unknown";
    String long_name "Correlation Beam2";
    Float64 missing_value -32768;
    String units "--";
  }
  correlation_beam3 {
    String description "correlation magnitude for beam 3; 255 = perfect correlation";
    String ioos_category "Unknown";
    String long_name "Correlation Beam3";
    Float64 missing_value -32768;
    String units "--";
  }
  correlation_beam4 {
    String description "correlation magnitude for beam 4; 255 = perfect correlation";
    String ioos_category "Unknown";
    String long_name "Correlation Beam4";
    Float64 missing_value -32768;
    String units "--";
  }
  echo_intensity_beam1 {
    String description "echo intensity for beam 1, at about 0.45 db per count";
    String ioos_category "Unknown";
    String long_name "Echo Intensity Beam1";
    Float64 missing_value -32768;
    String units "--";
  }
  echo_intensity_beam2 {
    String description "echo intensity for beam 2, at about 0.45 db per count";
    String ioos_category "Unknown";
    String long_name "Echo Intensity Beam2";
    Float64 missing_value -32768;
    String units "--";
  }
  echo_intensity_beam3 {
    String description "echo intensity for beam 3, at about 0.45 db per count";
    String ioos_category "Unknown";
    String long_name "Echo Intensity Beam3";
    Float64 missing_value -32768;
    String units "--";
  }
  echo_intensity_beam4 {
    String description "echo intensity for beam 4, at about 0.45 db per count";
    String ioos_category "Unknown";
    String long_name "Echo Intensity Beam4";
    Float64 missing_value -32768;
    String units "db-";
  }
  eastward_sea_water_velocity {
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String description "velocity of sea water in the eastward direction (westward is negative)";
    String ioos_category "Currents";
    String long_name "Eastward Sea Water Velocity";
    Float64 missing_value -32768.0;
    String standard_name "eastward_sea_water_velocity";
    String units "m/s";
  }
  northward_sea_water_velocity {
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String description "velocity of sea water in the northward direction (southward is negative)";
    String ioos_category "Currents";
    String long_name "Northward Sea Water Velocity";
    Float64 missing_value -32768.0;
    String standard_name "northward_sea_water_velocity";
    String units "m/s";
  }
  upward_sea_water_velocity {
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String description "velocity of sea water in the upward direction; i.e., towards the surface (downward is negative)";
    String ioos_category "Currents";
    String long_name "Upward Sea Water Velocity";
    Float64 missing_value -32768.0;
    String standard_name "upward_sea_water_velocity";
    String units "m/s";
  }
  upward_sea_water_velocity_error {
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String description "error velocity of sea water in the upward direction; i.e., towards the surface (downward is negative)";
    String ioos_category "Statistics";
    String long_name "Upward Sea Water Velocity Error";
    Float64 missing_value -32768.0;
    String units "m/s";
  }
  NC_GLOBAL {
    Float64 _FillValue -32768;
    String author "Seth Travis";
    String bandwidth "broad";
    Float64 beam_angle 20;
    String beam_direction "upfacing";
    String beam_pattern "convex";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "lander_name,deployment_name,latitude,longitude";
    String contact "setht1@uw.edu";
    String contributor_name "Olympic Coast National Marine Sanctuary, NANOOS, NWEM";
    String contributor_role "owner, funder, publisher";
    String contributor_role_url "https://olympiccoast.noaa.gov/, https://www.nanoos.org/, https://nwem.apl.washington.edu/";
    String contributor_role_vocabulary "https://vocab.nerc.ac.uk/collection/G04/current/";
    String Conventions "CF-1.10, ACDD-1.3, IOOS-1.2, COARDS";
    String coordinate_transformation "earth";
    String creator_country "United States";
    String creator_email "setht1@uw.edu";
    String creator_institution "Olympic Coast NMS";
    String creator_name "Olympic Coast National Marine Sanctuary";
    String creator_sector "government";
    String creator_type "institution";
    String creator_url "https://olympiccoast.noaa.gov/";
    String defaultDataQuery "eastward_sea_water_velocity[last-192:last][0:last],northward_sea_water_velocity[last-192:last][0:last],upward_sea_water_velocity[last-192:last][0:last];";
    String defaultGraphQuery "eastward_sea_water_velocity[last-192:last][0:last]&.draw=surface&.vars=time|depth|eastward_sea_water_velocity&.yRange=0|42|false";
    String deployment_depth "42m";
    String description "Acoustic Doppler Current Profiler (ADCP) data on the ocnms_mb42 platform";
    String designation "ocnms_mb42_ADCP";
    Float64 estimated_salinity 35;
    String featureType "TimeSeries";
    String frequency "300kHz";
    Float64 heading_bias 0;
    String history 
"2026-05-14T17:41:08Z (local files)
2026-05-14T17:41:08Z http://nwem.apl.uw.edu/griddap/ocnms_mb42_lander_adcp.das";
    String infoUrl "https://olympiccoast.noaa.gov/science/oceanographic-moorings/";
    String institution "Olympic Coast NMS";
    String keywords "acoustic, adcp, applied, beam1, beam2, beam3, beam4, circulation, correlation, correlation_beam1, correlation_beam2, correlation_beam3, correlation_beam4, current, currents, data, depth, doppler, earth, Earth Science > Oceans > Ocean Circulation > Ocean Currents, eastward, eastward_sea_water_velocity, echo, echo_intensity_beam1, echo_intensity_beam2, echo_intensity_beam3, echo_intensity_beam4, error, intensity, laboratory, northward, northward_sea_water_velocity, ocean, oceans, physics, profiler, science, sea, seawater, statistics, time, university, upward, upward_sea_water_velocity, upward_sea_water_velocity_error, velocity, washington, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String latitude "48.323967N";
    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 longitude "-124.735383E";
    Float64 low_correlation_threshold 64;
    Float64 min_percent_good 0;
    String publisher_country "United Stated";
    String publisher_email "setht1@uw.edu";
    String publisher_institution "University of Washington - Applied Physics Laboratory";
    String publisher_name "NorthWest Environmental Moorings (NWEM) Group";
    String publisher_type "group";
    String publisher_url "https://nwem.apl.washington.edu/";
    Float64 serial_number 1258;
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "ADCP Data from a Teledyne Workhorse on the Lander";
    String testOutOfDate "now-1day";
    String time_coverage_end "2026-05-14T16:17:03Z";
    String time_coverage_start "2026-05-08T20:47:08Z";
    String title "OCNMS - Makah Bay: ADCP - Currents Data";
    Float64 transmit_pulse_length 2.37;
    Float64 velocity_error_threshold 2000;
  }
}

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.