ERDDAP > tabledap > Data Access Form

Dataset Title:	Holyrood Buoy 1, Raw Wind Data
Institution:	MI   (Dataset ID: SMA_Holyrood_Buoy1_wind_raw)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Subset | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum    or a List of Values	Maximum
station_name	!= =~ <= >= = < >		!= =~ <= >= = < >		"holyrood_1_raw_wind"	"holyrood_1_raw_wind"
time (Timestamp, UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2022-09-27T14:19:35.121000Z	2023-02-06T06:53:59.479000Z
relative_wind_direction	!= =~ <= >= = < >		!= =~ <= >= = < >		-2	1017
relative_wind_speed (Wind Speed)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	1015.9
corrected_wind_direction	!= =~ <= >= = < >		!= =~ <= >= = < >		0	1001
corrected_speed	!= =~ <= >= = < >		!= =~ <= >= = < >		-3.6	79.0
pressure	!= =~ <= >= = < >		!= =~ <= >= = < >		-6.9	1042.3
relative_humidity	!= =~ <= >= = < >		!= =~ <= >= = < >		-3.8	95.0
temperature	!= =~ <= >= = < >		!= =~ <= >= = < >		-13.4	23.5
dewpoint	!= =~ <= >= = < >		!= =~ <= >= = < >		-15.9	216.0
internal_date_and_time (UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >
supply_voltage	!= =~ <= >= = < >		!= =~ <= >= = < >		0.2	13.5
status	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0 1.0 2.0 4.0 6.0 NaN
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.4	47.40528
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-53.1354	-53.134928
altitude (m)	!= =~ <= >= = < >		!= =~ <= >= = < >		-10.7	12.5

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" station_name time relative_wind_direction relative_wind_speed corrected_wind_direction corrected_speed pressure relative_humidity temperature dewpoint internal_date_and_time supply_voltage status latitude longitude altitude station_name time relative_wind_direction relative_wind_speed corrected_wind_direction corrected_speed pressure relative_humidity temperature dewpoint internal_date_and_time supply_voltage status latitude longitude altitude station_name time relative_wind_direction relative_wind_speed corrected_wind_direction corrected_speed pressure relative_humidity temperature dewpoint internal_date_and_time supply_voltage status latitude longitude altitude station_name time relative_wind_direction relative_wind_speed corrected_wind_direction corrected_speed pressure relative_humidity temperature dewpoint internal_date_and_time supply_voltage status latitude longitude altitude station_name time relative_wind_direction relative_wind_speed corrected_wind_direction corrected_speed pressure relative_humidity temperature dewpoint internal_date_and_time supply_voltage status latitude longitude altitude ")

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .dataTable - A JSON file formatted for use with the Google Visualization client library (Google Charts). .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriCsv - Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .geoJson - Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. .graph - View a Make A Graph web page. .help - View a web page with a description of tabledap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncCF - Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). .ncCFHeader - View the UTF-8 header (the metadata) for the .ncCF file. .ncCFMA - Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). .ncCFMAHeader - View the UTF-8 header (the metadata) for the .ncCFMA file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). .parquet - Download as a parquet file. Metadata contains column names ("column_names") and units ("column_units"). .parquetWMeta - Download as a parquet file with detailed metadata. .subset - View an HTML form which uses faceted search to simplify picking subsets of the data. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .kml - View a .kml file, suitable for Google Earth. .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  station_name {
    String _Encoding "UTF-8";
    String actual_range 
"holyrood_1_raw_wind
holyrood_1_raw_wind";
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station Name";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.664288375121e+9, 1.675666439479e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Timestamp";
    String source_name "timestamp";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00.000000Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  relative_wind_direction {
    Int16 _FillValue 32767;
    Int16 actual_range -2, 1017;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Wind";
    String long_name "Wind From Direction";
    String standard_name "wind_from_direction";
  }
  relative_wind_speed {
    Float32 actual_range 0.0, 1015.9;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Wind";
    String long_name "Wind Speed";
    String standard_name "wind_speed";
  }
  corrected_wind_direction {
    Int16 _FillValue 32767;
    Int16 actual_range 0, 1001;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Wind";
    String long_name "Wind From Direction";
    String standard_name "wind_from_direction";
  }
  corrected_speed {
    Float32 actual_range -3.6, 79.0;
    String ioos_category "Currents";
    String long_name "Corrected Speed";
  }
  pressure {
    Float32 actual_range -6.9, 1042.3;
    String ioos_category "Pressure";
    String long_name "Pressure";
  }
  relative_humidity {
    Float32 actual_range -3.8, 95.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 20.0;
    String ioos_category "Meteorology";
    String long_name "Relative Humidity";
    String standard_name "relative_humidity";
  }
  temperature {
    Float32 actual_range -13.4, 23.5;
    String ioos_category "Temperature";
    String long_name "Temperature";
  }
  dewpoint {
    Float32 actual_range -15.9, 216.0;
    String ioos_category "Meteorology";
    String long_name "Dewpoint";
  }
  internal_date_and_time {
    String ioos_category "Time";
    String long_name "Internal Date And Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00.000";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  supply_voltage {
    Float32 actual_range 0.2, 13.5;
    String ioos_category "Unknown";
    String long_name "Supply Voltage";
  }
  status {
    Float32 actual_range 0.0, 6.0;
    String ioos_category "Unknown";
    String long_name "Status";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 0.4, 47.40528;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -53.1354, -53.134928;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  altitude {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "up";
    Float32 actual_range -10.7, 12.5;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Altitude";
    String positive "up";
    String standard_name "altitude";
    String units "m";
  }
 }
  NC_GLOBAL {
    String cde_ingest "false";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_name,longitude,latitude";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "MI";
    String creator_url "https://www.smartatlantic.ca/station_alt.html?id=holyrood_buoy1";
    Float64 Easternmost_Easting -53.134928;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 47.40528;
    Float64 geospatial_lat_min 0.4;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -53.134928;
    Float64 geospatial_lon_min -53.1354;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 12.5;
    Float64 geospatial_vertical_min -10.7;
    String geospatial_vertical_positive "up";
    String geospatial_vertical_units "m";
    String history 
"2026-04-30T22:46:40Z (local files)
2026-04-30T22:46:40Z https://www.smartatlantic.ca/erddap/tabledap/SMA_Holyrood_Buoy1_wind_raw.html";
    String infoUrl "https://www.smartatlantic.ca/station_alt.html?id=holyrood_buoy1";
    String institution "MI";
    String keywords "altitude, atmosphere, atmospheric, buoy, corrected, corrected_speed, corrected_wind_direction, currents, data, date, dew, dew point, dewpoint, direction, earth, Earth Science > Atmosphere > Altitude > Station Height, Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, height, holyrood, humidity, internal, internal_date_and_time, latitude, longitude, meteorology, point, pressure, raw, relative, relative_humidity, relative_wind_direction, relative_wind_speed, science, speed, station, status, supply, supply_voltage, surface, temperature, time, timestamp, vapor, voltage, water, wind, wind_from_direction, wind_speed, winds";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://creativecommons.org/licenses/by/4.0/";
    Float64 Northernmost_Northing 47.40528;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 0.4;
    String standard_name_vocabulary "CF Standard Name Table v79";
    String subsetVariables "status";
    String summary "Holyrood Buoy 1 Raw Wind Data. MI data from a local source.";
    String time_coverage_end "2023-02-06T06:53:59.479000Z";
    String time_coverage_start "2022-09-27T14:19:35.121000Z";
    String title "Holyrood Buoy 1, Raw Wind Data";
    Float64 Westernmost_Easting -53.1354;
  }
}

 

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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 Data Access Protocol (DAP) and its selection constraints.

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.

 

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