Make A Graph

Dataset Title:	Marathon, FL (MARA) Long Range Radials (20210819 - 20220503)
Institution:	Center for Ocean Observing and Leadership, Department of Marine & Coastal Sciences, Rutgers University (Dataset ID: HFR_MARA_USF)
Range:	longitude = -82.707634 to -78.91175°E, latitude = 22.84794 to 24.82489°N, time = 2021-08-19T15:00:00Z to 2022-05-03T19:00:00Z
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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6293852e+9, 1.6516044e+9;
    String axis "T";
    String calendar "gregorian";
    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";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -82.7076322, -78.9117493;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String short_name "lon";
    String standard_name "longitude";
    String units "degrees_east";
    Float64 valid_max 180.0;
    Float64 valid_min -180.0;
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 22.8479397, 24.8248904;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String short_name "lat";
    String standard_name "latitude";
    String units "degrees_north";
    Float64 valid_max 90.0;
    Float64 valid_min -90.0;
  }
  u {
    Float64 _FillValue NaN;
    Float64 actual_range -196.434, 185.947;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "Eastward Surface Current (cm/s)";
    String short_name "u";
    String standard_name "surface_eastward_sea_water_velocity";
    String units "cm s-1";
    Float64 valid_max 300.0;
    Float64 valid_min -300.0;
  }
  v {
    Float64 _FillValue NaN;
    Float64 actual_range -194.527, 194.779;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "Northward Surface Current (cm/s)";
    String short_name "v";
    String standard_name "surface_northward_sea_water_velocity";
    String units "cm s-1";
    Float64 valid_max 300.0;
    Float64 valid_min -300.0;
  }
  vector_flag {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 0, 128;
    Float64 colorBarMaximum 1500.0;
    Float64 colorBarMinimum 0.0;
    Float64 flag_masks 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024;
    String flag_meanings "grid_point_deleted grid_point_near_coast point_measurement no_radial_solution baseline_interpolationexceeds_max_speed invalid_solution solution_beyond_valid_spatial_domain insufficient_angular_resolutionreserved reserved";
    String ioos_category "Quality";
    String long_name "Vector Flag Masks";
    Float64 valid_range 0, 2048;
  }
  spatial_quality {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 195.811;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Spatial Quality of radial sea water velocity";
    Float64 missing_value NaN;
    String units "cm s-1";
  }
  temporal_quality {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 191.327;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Temporal Quality of radial sea water velocity";
    Float64 missing_value NaN;
    String units "cm s-1";
  }
  velocity_max {
    Float64 _FillValue NaN;
    Float64 actual_range -199.523, 199.523;
    String ioos_category "Currents";
    String long_name "Maximum Velocity of sea water (away from instrument)";
    String units "cm s-1";
  }
  velocity_min {
    Float64 _FillValue NaN;
    Float64 actual_range -202.513, 202.513;
    String ioos_category "Currents";
    String long_name "Minimum Velocity of sea water (away from instrument)";
    String units "cm s-1";
  }
  spatial_count {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 131;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Spatial count of sea water velocity (away from instrument)";
  }
  temporal_count {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 2, 7;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Temporal count of sea water velocity (away from instrument)";
  }
  dist_east_from_origin {
    Float64 _FillValue NaN;
    Float64 actual_range -175.8662, 209.5687;
    String ioos_category "Unknown";
    String long_name "Eastward distance from instrument";
    String units "km";
  }
  dist_north_from_origin {
    Float64 _FillValue NaN;
    Float64 actual_range -209.5687, 10.9747;
    String ioos_category "Unknown";
    String long_name "Northward distance from instrument";
    String units "km";
  }
  range {
    Float64 _FillValue NaN;
    Float64 actual_range 11.6498, 209.6964;
    String axis "X";
    Float64 colorBarMaximum 1500.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Unknown";
    String long_name "Range from origin (away from instrument)";
    String short_name "range";
    String units "km";
    Float64 valid_max 1000.0;
    Float64 valid_min 0.0;
  }
  bearing {
    Float64 _FillValue NaN;
    Float64 actual_range 87.0, 237.0;
    String axis "Y";
    Float64 colorBarMaximum 400.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Unknown";
    String long_name "Bearing from origin (away from instrument)";
    String short_name "bearing";
    String units "degrees";
    Float64 valid_max 360.0;
    Float64 valid_min 0.0;
  }
  velocity {
    Float64 _FillValue NaN;
    Float64 actual_range -198.028, 199.572;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "Radial Sea Water Velocity Away From Instrument";
    String standard_name "radial_sea_water_velocity_away_from_instrument";
    String units "cm s-1";
    Float64 valid_range -1000.0, 1000.0;
  }
  heading {
    Float64 _FillValue NaN;
    Float64 actual_range 0.2, 35.7;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Currents";
    String long_name "Direction Of Radial Vector Away From Instrument";
    String standard_name "direction_of_radial_vector_away_from_instrument";
    String units "degrees";
    Float64 valid_range 0.0, 3600.0;
  }
  range_cell {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 2, 36;
    String ioos_category "Currents";
    String long_name "Cross Spectra Range Cell  of sea water velocity (away from instrument)";
  }
  syntax_qc {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 1;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "pass not_evaluated suspect fail missing_data";
    Float64 flag_values 1, 2, 3, 4, 5;
    String ioos_category "Quality";
    String long_name "Syntax (QARTOD Test 06) Flag Masks";
    Float64 valid_range 1, 9;
  }
  max_threshold_qc {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 3;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "pass not_evaluated suspect fail missing_data";
    Float64 flag_values 1, 2, 3, 4, 5;
    String ioos_category "Quality";
    String long_name "Maximum Velocity Threshold (QARTOD Test 07) Flag Masks";
    Float64 valid_range 1, 9;
  }
  valid_location_qc {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 4;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "pass not_evaluated suspect fail missing_data";
    Float64 flag_values 1, 2, 3, 4, 5;
    String ioos_category "Quality";
    String long_name "Valid Location (QARTOD Test 08) Flag Masks";
    Float64 valid_range 1, 9;
  }
  radial_count_qc {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 4;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "pass not_evaluated suspect fail missing_data";
    Float64 flag_values 1, 2, 3, 4, 5;
    String ioos_category "Statistics";
    String long_name "Radial Count (QARTOD Test 09) Flag Masks";
    Float64 valid_range 1, 9;
  }
  spatial_median_filter_qc {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 4;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "pass not_evaluated suspect fail missing_data";
    Float64 flag_values 1, 2, 3, 4, 5;
    String ioos_category "Quality";
    String long_name "Spatial Median Filter (QARTOD Test 10) Flag Masks";
    Float64 valid_range 1, 9;
  }
  temporal_gradient_qc {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 4;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "pass not_evaluated suspect fail missing_data";
    Float64 flag_values 1, 2, 3, 4, 5;
    String ioos_category "Quality";
    String long_name "Temporal Gradient (QARTOD Test 11) Flag Masks";
    Float64 valid_range 1, 9;
  }
  operator_flag_qc {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 4;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String comment "Flag that is manually set by operator. Flag vectors that are not detected by QC tests but are clearly wrong.";
    String flag_meanings "pass not_evaluated suspect fail missing_data";
    Float64 flag_values 1, 2, 3, 4, 5;
    String ioos_category "Quality";
    String long_name "Operator Flag Masks";
    Float64 valid_range 1, 9;
  }
  primary_flag_qc {
    Float64 _FillValue -9223372036854775808;
    Float64 actual_range 1, 4;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "pass not_evaluated suspect fail missing_data";
    Float64 flag_values 1, 2, 3, 4, 5;
    String ioos_category "Quality";
    String long_name "Primary Flag Masks";
    Float64 valid_range 1, 9;
  }
 }
  NC_GLOBAL {
    String AngularResolution "5 Deg";
    String AntennaBearing "237.0 True";
    String BraggHasSecondOrder "0";
    String BraggSmoothingPoints "3";
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String CTF "1.00";
    String CurrentVelocityLimit "200.0";
    String DopplerCells "2048";
    String DopplerInterpolation "1";
    String DopplerResolutionHzPerBin "0.000488281";
    Float64 Easternmost_Easting -78.9117493;
    String featureType "Point";
    String FileType "LLUV rdls \"RadialMap\"";
    String FirstOrderCalc "1";
    String FirstOrderMethod "0  2 36";
    String GeodVersion "\"CGEO\" 1.90  2018 01 31";
    Float64 geospatial_lat_max 24.8248904;
    Float64 geospatial_lat_min 22.8479397;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -78.9117493;
    Float64 geospatial_lon_min -82.7076322;
    String geospatial_lon_units "degrees_east";
    String GreatCircle "\"WGS84\" 6378137.000  298.257223562997";
    String history 
"2024-05-04T22:17:57Z (local files)
2024-05-04T22:17:57Z https://gcoos5.geos.tamu.edu/tabledap/HFR_MARA_USF.das";
    String infoUrl "https://www.nationalacademies.org/gulf/fellowships-and-grants/understanding-gulf-ocean-systems";
    String institution "Center for Ocean Observing and Leadership, Department of Marine & Coastal Sciences, Rutgers University";
    String keywords "away, bearing, cell, circulation, cm/s, count, cross, current, currents, data, direction, direction_of_radial_vector_away_from_instrument, dist_east_from_origin, dist_north_from_origin, distance, earth, Earth Science > Oceans > Ocean Circulation > Ocean Currents, eastward, filter, flag, gradient, heading, instrument, latitude, local, longitude, masks, max_threshold_qc, maximum, median, minimum, northward, ocean, oceans, operator, operator_flag_qc, origin, primary, primary_flag_qc, qartod, quality, radial, radial_count_qc, radial_sea_water_velocity_away_from_instrument, range, range_cell, science, sea, seawater, source, spatial, spatial_count, spatial_median_filter_qc, spatial_quality, spectra, statistics, surface, surface_eastward_sea_water_velocity, surface_northward_sea_water_velocity, syntax, syntax_qc, temporal, temporal_count, temporal_gradient_qc, temporal_quality, test, threshold, time, u, v, valid, valid_location_qc, vector, vector_flag, velocity, velocity_max, velocity_min, water";
    String keywords_vocabulary "GCMD Science Keywords";
    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 LLUVSpec "1.27  2017 01 13";
    String LLUVTrustData "all  all lluv xyuv rbvd";
    String Manufacturer "CODAR Ocean Sensors. SeaSonde";
    String MergedCount "7";
    String MergeMethod "1 MedianVectors";
    Float64 Northernmost_Northing 24.8248904;
    String Origin "24.7401333  -80.9832833";
    String PatternAmplitudeCalculations "0.9046  0.9188";
    String PatternAmplitudeCorrections "0.8203  0.8798";
    String PatternDate "2020 03 09  20 59 06";
    String PatternMethod "1 PatternVectors";
    String PatternPhaseCalculations "-111.60  -88.20";
    String PatternPhaseCorrections "-98.00  -86.00";
    String PatternResolution "1.0 deg";
    String PatternType "Measured";
    String PatternUUID "9EBAB71E-2A44-4E06-8DDB-F5CAC59E15DA";
    String ProcessedTimeStamp "2022 05 03  21 15 25";
    String ProcessingTool 
"\"RadialMerger\" 11.5.0
\"SpectraToRadial\" 11.6.2
\"RadialSlider\" 12.2.0
\"RadialArchiver\" 12.1.0
\"AnalyzeSpectra\" 10.9.8";
    String QCTest 
"qc_qartod_syntax (QC06) - Test applies to entire file. Thresholds=[N/A]: See results in column QC06
qc_qartod_maximum_velocity (QC07) - Test applies to each row. Thresholds=[ high_vel=175.0 (cm/s) max_vel=200.0 (cm/s) ]: See results in column QC07 below
qc_qartod_valid_location (QC08) - Test applies to each row. Thresholds=[VFLG==128]: See results in column QC08 below
qc_qartod_radial_count (QC09) - Test applies to entire file. Thresholds=[ failure=90.0 (radials) warning_num=270.0 (radials) <valid_radials=969> ]:  See results in column QC09 below
qc_qartod_spatial_median (QC10) - Test applies to each row. Thresholds=[ range_cell_limit=2.1 (range cells) angular_limit=10 (degrees) current_difference=50 (cm/s) ]: See results in column QC10 below
qc_qartod_temporal_gradient (QC11) - Test applies to each row. Thresholds=[ gradient_temp_warn=36 (cm/s*hr) gradient_temp_fail=54 (cm/s*hr) ]: See results in column QC11 below
qc_operator_flag (QCOP) - Test applies to each row. Thresholds=[N/A]: See results in column QCOP below
qc_qartod_primary_flag (PRIM) - Primary Flag - Highest flag value of QC06, QC07, QC08, QC09, QC10, QC11, QCOP(\"not_evaluated\" flag results ignored)";
    String RadialBraggNoiseThreshold "3.980";
    String RadialBraggPeakDropOff "199.530";
    String RadialBraggPeakNull "125.890";
    String RadialMinimumMergePoints "2";
    String RadialMusicParameters "40.000 20.000 2.000";
    String RangeCells "63";
    String RangeEnd "36";
    String RangeResolutionKMeters "5.824900";
    String RangeStart "2";
    String ReferenceBearing "0 True";
    String Site "MARA \"\"";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 22.8479397;
    String SpatialResolution "5 Deg";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "time, syntax_qc, max_threshold_qc, radial_count_qc, operator_flag_qc";
    String summary "Radial Vectors quality controlled using HFRadarPyPython toolbox";
    String time_coverage_end "2022-05-03T19:00:00Z";
    String time_coverage_start "2021-08-19T15:00:00Z";
    String TimeCoverage "240.000 Minutes";
    String TimeStamp "2022 05 03  19 00 00";
    String TimeZone "\"UTC\" +0.000 0 \"Atlantic/Reykjavik\"";
    String title "Marathon, FL (MARA) Long Range Radials (20210819 - 20220503)";
    String TransmitBandwidthKHz "-25.733913";
    String TransmitCenterFreqMHz "4.900000";
    String TransmitSweepRateHz "1.000000";
    String UUID "742CE1D3-4BB9-438B-BDDD-5E3CDB72B566";
    Float64 Westernmost_Easting -82.7076322;
  }
}

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.