Make A Graph

Dataset Title:	10.5066-P96EH1MS - BEL19B4C02aqdwvs-a
Institution:	Coastal and Marine Hazards and Resources Program, U.S. Geological Survey (Dataset ID: 10_5066_P96EH1MS_BEL19B4C02aqdwvs_a_nc)
Range:	longitude = -122.61238 to -122.61238°E, latitude = 48.74377 to 48.74377°N, time = 2021-01-22T20:32:01Z to 2021-04-13T21:02:01Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

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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 {
  station_id {
    String actual_range 
"10_5066_P96EH1MS_BEL19B4C02aqdwvs_a_nc
10_5066_P96EH1MS_BEL19B4C02aqdwvs_a_nc";
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station ID";
  }
  z {
    Float64 actual_range 1.26, 1.26;
    String axis "Z";
    String ioos_category "Other";
    String long_name "height relative to sea bed";
    String positive "up";
    String standard_name "height";
    String units "m";
  }
  time {
    UInt32 _ChunkSizes 1024;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.611347521e+9, 1.618347721e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "time (UTC)";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  Bat_106 {
    UInt32 _ChunkSizes 973;
    Float32 actual_range 10.8, 11.0;
    String coverage_content_type "physicalMeasurement";
    Float64 epic_code 106;
    String FillValue "nan";
    String height_depth_units "m";
    Float64 initial_instrument_height 0.16;
    String ioos_category "Other";
    String long_name "Battery voltage";
    Float64 maximum 11.0;
    Float64 minimum 10.8;
    Float64 nominal_instrument_depth 6.4399999999999995;
    String sensor_type "Nortek Aquadopp Profiler";
    String serial_number "AQD 8473";
    String units "V";
  }
  bindist {
    Float64 actual_range 1.1, 1.1;
    Float64 bin_count 1;
    Float64 bin_size 1.0;
    Float64 blanking_distance 0.2;
    Float64 center_first_bin 1.1;
    String FillValue "nan";
    String height_depth_units "m";
    Float64 initial_instrument_height 0.16;
    String ioos_category "Other";
    String long_name "distance from transducer head";
    Float64 nominal_instrument_depth 6.4399999999999995;
    String note "distance is along profile from instrument head to center of bin";
    String sensor_type "Nortek Aquadopp Profiler";
    String serial_number "AQD 8473";
    Float64 transducer_offset_from_bottom 0.16;
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 48.74377, 48.74377;
    String axis "Y";
    Float64 epic_code 500;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -122.61238, -122.61238;
    String axis "X";
    Float64 epic_code 502;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth_m {
    Float64 actual_range 4.532004791902313, 4.532004791902313;
    String ioos_category "Other";
    String long_name "depth below mean sea level";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  bin_depth {
    UInt32 _ChunkSizes 1, 1;
    Float32 actual_range 2.371234, 6.109248;
    String coverage_content_type "physicalMeasurement";
    String FillValue "nan";
    String height_depth_units "m";
    Float64 initial_instrument_height 0.16;
    String ioos_category "Other";
    String long_name "bin depth";
    Float64 maximum 6.109248234375;
    Float64 minimum 2.371233984375;
    String name "bin depth";
    Float64 nominal_instrument_depth 6.4399999999999995;
    String note "Actual depth time series of wave burst bin depths. Calculated as corrected pressure (P_1ac) - bindist.";
    String sensor_type "Nortek Aquadopp Profiler";
    String serial_number "AQD 8473";
    String units "m";
  }
  wp_peak {
    UInt32 _ChunkSizes 487;
    Float64 actual_range 2.245614035087719, 5.12;
    Float64 epic_code 4063;
    String FillValue "nan";
    String height_depth_units "m";
    Float64 initial_instrument_height 0.16;
    String ioos_category "Other";
    String long_name "Dominant (peak) wave period";
    Float64 maximum 5.12;
    Float64 minimum 2.245614035087719;
    Float64 nominal_instrument_depth 6.4399999999999995;
    String note 
"2023-01-23T23:04:49.451053+00:00: Values filled where wp_peak, wp_4060 >= 6.
2023-01-23T23:04:49.452621+00:00: Values filled where wh_4061 <= 0.05.
";
    String sensor_type "Nortek Aquadopp Profiler";
    String serial_number "AQD 8473";
    String standard_name "sea_surface_wave_period_at_variance_spectral_density_maximum";
    String units "s";
  }
  wh_4061 {
    UInt32 _ChunkSizes 487;
    Float64 actual_range 0.05000544034601296, 1.612901997995524;
    Float64 epic_code 4061;
    String FillValue "nan";
    String height_depth_units "m";
    Float64 initial_instrument_height 0.16;
    String ioos_category "Other";
    String long_name "Significant wave height";
    Float64 maximum 1.612901997995524;
    Float64 minimum 0.05000544034601296;
    Float64 nominal_instrument_depth 6.4399999999999995;
    String note 
"2023-01-23T23:04:49.454032+00:00: Values filled where wh_4061 <= 0.05.
";
    String sensor_type "Nortek Aquadopp Profiler";
    String serial_number "AQD 8473";
    String standard_name "sea_surface_wave_significant_height";
    String units "m";
  }
  wp_4060 {
    UInt32 _ChunkSizes 487;
    Float64 actual_range 1.7374003906532016, 3.8240630749512836;
    Float64 epic_code 4060;
    String FillValue "nan";
    String height_depth_units "m";
    Float64 initial_instrument_height 0.16;
    String ioos_category "Other";
    String long_name "Average wave period";
    Float64 maximum 3.8240630749512836;
    Float64 minimum 1.7374003906532016;
    Float64 nominal_instrument_depth 6.4399999999999995;
    String note 
"2023-01-23T23:04:49.451116+00:00: Values filled where wp_peak, wp_4060 >= 6.
2023-01-23T23:04:49.455559+00:00: Values filled where wh_4061 <= 0.05.
";
    String sensor_type "Nortek Aquadopp Profiler";
    String serial_number "AQD 8473";
    String standard_name "sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment";
    String units "s";
  }
  frequency {
    Float64 actual_range 0.0, 1.0;
    String ioos_category "Other";
    String long_name "Frequency";
    String units "Hz";
  }
  pspec {
    UInt32 _ChunkSizes 1, 129;
    Float64 actual_range 3.3070050226789017e-12, 2.964375667975096;
    String FillValue "nan";
    String height_depth_units "m";
    Float64 initial_instrument_height 0.16;
    String ioos_category "Other";
    String long_name "Pressure derived non-directional wave energy spectrum";
    Float64 maximum 2.964375667975096;
    Float64 minimum 3.3070050226789017e-12;
    Float64 nominal_instrument_depth 6.4399999999999995;
    String note "Use caution: all spectra are provisional";
    String sensor_type "Nortek Aquadopp Profiler";
    String serial_number "AQD 8473";
    String standard_name "sea_surface_wave_variance_spectral_density";
    String units "m^2/Hz";
  }
 }
  NC_GLOBAL {
    String AQDAnalogInput1 "NONE";
    String AQDAnalogInput2 "NONE";
    String AQDAnalogPowerOutput "12V";
    Float64 AQDAverageInterval 120;
    Float64 AQDBeamAngle 25;
    String AQDBeamPattern "convex";
    Float64 AQDBeamWidth 1.7;
    Float64 AQDBlankingDistance 0.2;
    Float64 AQDCCD 0.45, 0.7, 0.95, 1.2, 1.45, 1.7, 1.95, 2.2, 2.45, 2.7, 2.95, 3.2, 3.45, 3.7, 3.95, 4.2, 4.45, 4.7, 4.95, 5.2, 5.45, 5.7, 5.95, 6.2, 6.45, 6.7, 6.95, 7.2, 7.45, 7.7, 7.95, 8.2, 8.45, 8.7, 8.95;
    Float64 AQDCellSize 25;
    String AQDComments "2 Mhz Western Delta Site";
    String AQDCompass "-50 -124 21";
    Float64 AQDCompassUpdateRate 900;
    String AQDCoordinateSystem "ENU";
    String AQDDeploymentName "BEL4";
    String AQDDeploymentTime "1/22/2021 12:00:00";
    String AQDFirmwareVersion "3.43";
    Float64 AQDFrequency 2000;
    String AQDHardwareRevision "4 (E)";
    String AQDHeadSerialNumber "ASP 5467";
    Float64 AQDMeasurementLoad 26;
    Float64 AQDNumBeams 3;
    Float64 AQDNumberOfBeams 3;
    Float64 AQDNumberOfCells 35;
    Float64 AQDNumberOfPingsPerBurst 6;
    String AQDPowerLevel "HIGH-";
    String AQDPressureSensor "0 0 4045 17394";
    Float64 AQDProfileInterval 900;
    String AQDRecorderSize "361 MByte";
    String AQDSalinity "20.0 ppt";
    String AQDSerial_Number "AQD 8473";
    String AQDSoftwareVersion "1.37.08";
    String AQDSoundSpeed "MEASURED";
    String AQDSyncOutDelay "0 sec";
    String AQDSyncPowerDelay "0 sec";
    String AQDTilt "YES";
    Float64 AQDTransmitPulseLength 0.25;
    String AQDVelocityRange "HIGH";
    String basefile "bel401";
    Float64 beam_angle 25;
    String beam_pattern "convex";
    Float64 beam_width 1.7;
    Float64 bin_count 1;
    Float64 bin_size 1.0;
    Float64 blanking_distance 0.2;
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_id";
    Float64 center_first_bin 1.1;
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_url "https://www.usgs.gov";
    Float64 DELTA_T 1800;
    String Deployment_date "2021-01-22 20:05";
    Float64 Easternmost_Easting -122.61238;
    String experiment_name "10.5066-P96EH1MS";
    String featureType "TimeSeries";
    String filename "BEL19B4C02aqd";
    Float64 frequency 2000;
    Float64 geospatial_lat_max 48.74377;
    Float64 geospatial_lat_min 48.74377;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -122.61238;
    Float64 geospatial_lon_min -122.61238;
    String geospatial_lon_units "degrees_east";
    String history 
"2023-01-23T23:04:34.299301+00:00: Processed using wvswad2cdf.py with stglib .0.6.0+15.g7d57f86.dirty, xarray 2022.3.0, NumPy 1.23.4, netCDF4 1.6.1, Python 3.10.8.
2023-01-23T23:04:41.425022+00:00: Data clipped using Deployment_date of 2021-01-22 20:05 and Recovery_date of 2021-04-13 21:21.
2023-01-23T23:04:41.455617+00:00: Atmospheric pressure compensated.
2023-01-23T23:04:41.480454+00:00: Processed to CF-1.8 using runwvscdf2nc.py.

2024-12-13T07:20:33Z (local files)
2024-12-13T07:20:33Z https://cmgds.marine.usgs.gov/tabledap/10_5066_P96EH1MS_BEL19B4C02aqdwvs_a_nc.das";
    String infoUrl "https://cmgds.marine.usgs.gov/ocean-time-series/";
    Float64 initial_instrument_height 0.16;
    String INST_TYPE "Nortek Aquadopp Profiler";
    String institution "Coastal and Marine Hazards and Resources Program, U.S. Geological Survey";
    Float64 latitude 48.74377;
    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.";
    Float64 longitude -122.61238;
    Float64 magnetic_variation 15.95;
    String MOORING "BEL19B4C";
    String NCProperties "version=2,netcdf=4.8.1,hdf5=1.12.2";
    Float64 nominal_instrument_depth 6.4399999999999995;
    Float64 nominal_sensor_depth 6.4399999999999995;
    String nominal_sensor_depth_note "WATER_DEPTH - initial_instrument_height";
    Float64 Northernmost_Northing 48.74377;
    String orientation "UP";
    String publisher_url "https://www.usgs.gov";
    String puv "false";
    String Recovery_date "2021-04-13 21:21";
    String salinity_set_by_user "20.0 ppt";
    String salinity_set_by_user_units "ppt";
    Float64 sample_interval 0.5;
    Float64 samples_per_burst 512;
    String serial_number "AQD 8473";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 48.74377;
    String start_time "2021-01-22T20:32:01.000000000";
    String stop_time "2021-04-13T21:02:01.000000000";
    String subsetVariables "station_id";
    String summary "10.5066-P96EH1MS - BEL19B4C02aqdwvs-a";
    String time_coverage_end "2021-04-13T21:02:01Z";
    String time_coverage_start "2021-01-22T20:32:01Z";
    String title "10.5066-P96EH1MS - BEL19B4C02aqdwvs-a";
    Float64 transducer_offset_from_bottom 0.16;
    Float64 WATER_DEPTH 6.6;
    String wave_coord_output "ENU";
    Float64 WaveCellSize 1.0;
    Float64 WaveInterval 1800;
    String WaveMeasurements "ENABLED";
    Float64 WaveNumberOfSamples 512;
    String WavePower "LOW";
    String WaveSampleRate "2 Hz";
    Float64 Westernmost_Easting -122.61238;
    Float64 wh_min 0.05;
    Float64 wp_max 6;
  }
}

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.