Make A Graph

Dataset Title:	MATANZAS_18 - 11129sgw-cal
Institution:	Coastal and Marine Hazards and Resources Program, U.S. Geological Survey (Dataset ID: MATANZAS_18_11129sgw_cal_nc)
Range:	longitude = -81.2146 to -81.2146°E, latitude = 29.71327 to 29.71327°N, time = 2018-01-24T17:17:05Z to 2018-04-13T11:17:05Z
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 
"MATANZAS_18_11129sgw_cal_nc
MATANZAS_18_11129sgw_cal_nc";
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station ID";
  }
  feature_type_instance {
    String ioos_category "Identifier";
    String long_name "Identifier for each feature type instance";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 29.71327, 29.71327;
    String axis "Y";
    String ioos_category "Location";
    String long_name "sensor latitude";
    String standard_name "latitude";
    String units "degrees_north";
    Float32 valid_max 29.713266;
    Float32 valid_min 29.713266;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -81.2146, -81.2146;
    String axis "X";
    String ioos_category "Location";
    String long_name "sensor longitude";
    String standard_name "longitude";
    String units "degrees_east";
    Float32 valid_max -81.2146;
    Float32 valid_min -81.2146;
  }
  crs {
    Int32 actual_range -2147483647, -2147483647;
    String epsg_code "EPSG:4326";
    String grid_mapping_name "latitude_longitude";
    Float64 inverse_flattening 298.257223563;
    String ioos_category "Identifier";
    String long_name "http://www.opengis.net/def/crs/EPSG/0/4326";
    Float64 semi_major_axis 6378137.0;
  }
  platform {
    Int32 actual_range -2147483647, -2147483647;
    String definition "http://mmisw.org/ont/ioos/definition/stationID";
    String ioos_category "Identifier";
    String ioos_code "11129sgw-cal";
    String long_name "USGS-CMG time-series data from the Matanzas Inlet, FL, 2018 project, mooring 1112 and package 11129sgw-cal. Oceanographic and Water Quality Measurements in the Nearshore Zone at Matanzas Inlet, Florida, January - April, 2018";
    String nodc_name "FIXED PLATFORM, MOORINGS";
    String short_name "USGS-CMG time-series data: MATANZAS_18 - 1112 - 11129sgw-cal";
    String type "large quadpod bottom lander";
  }
  time {
    UInt32 _ChunkSizes 1000;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.516814225e+9, 1.523618225e+9;
    String axis "T";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "time of measurement";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  z {
    Float32 actual_range -14.5, -14.5;
    String axis "Z";
    String FillValue "-9999.900390625";
    String grid_mapping "crs";
    String ioos_category "Other";
    String long_name "z of the sensor relative to the water surface";
    String positive "up";
    String standard_name "height";
    String units "m";
    Float32 valid_max -14.5;
    Float32 valid_min -14.5;
  }
  burst {
    UInt32 _ChunkSizes 1000;
    Float32 actual_range 64.0, 1954.0;
    String ancillary_variables "platform";
    String coordinates "time z latitude longitude";
    String coverage_content_type "physicalMeasurement";
    String FillValue "-2147483648.0";
    String grid_mapping "crs";
    String ioos_category "Other";
    String long_name "Burst Number";
    Float32 missing_value -2.147484e+9;
    String platform "platform";
    String units "count";
  }
  frequency {
    UInt32 _ChunkSizes 128;
    Float32 actual_range 0.0078125, 1.0;
    String FillValue "-9999.990234375";
    String ioos_category "Other";
    String long_name "Frequency";
    String units "Hz";
  }
  pspec {
    UInt32 _ChunkSizes 1891, 128;
    Float32 actual_range 3.560959e-7, 4.920063;
    String FillValue "1.0000000409184788e+35";
    String height_depth_units "m";
    Float64 initial_sensor_height 0.4;
    String ioos_category "Other";
    String long_name "Pressure derived Non-directional Wave Energy Spectrum (m^2/Hz)";
    Float32 maximum 4.9200635;
    Float32 minimum 3.5609585e-7;
    String note "Use caution: all spectra are provisional";
    Float64 sensor_depth 14.5;
    String sensor_type "Seabird Seagauge model SBE 26plus";
    String units "m^2/Hz";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_id";
    Float64 COMPOSITE 0.0;
    String contributor_name "J. Warner";
    String contributor_role "principalInvestigator";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String COORD_SYSTEM "GEOGRAPHIC";
    String CREATION_DATE "03-Apr-2019";
    String creator_email "rsignell@usgs.gov";
    String creator_name "Rich Signell";
    String creator_phone "+1 (508) 548-8700";
    String creator_url "https://www.usgs.gov";
    String DATA_ORIGIN "USGS WHCMSC Sediment Transport Group";
    String DATA_SUBTYPE "MOORED";
    String DATA_TYPE "WAVESPEC";
    String date_created "2019-06-19T21:02:00Z";
    String date_issued "2019-06-19T21:02:00Z";
    String date_metadata_modified "2019-06-19T21:02:00Z";
    String date_modified "2019-06-19T21:02:00Z";
    String DELTA_T "3600";
    String Deployment_date "24-Jan-2018";
    Float64 DEPTH_CONST 0.0;
    String DESCRIPTION "offshore site quadpod";
    Float64 DRIFTER 0.0;
    Float64 Easternmost_Easting -81.2146;
    String EXPERIMENT "Matanzas Inlet Sediment Transport";
    String experiment_name "MATANZAS_18";
    String featureType "TimeSeries";
    Float64 FILL_FLAG 0.0;
    String freq_cutoff "Kz<0.10";
    String geospatial_bounds "POINT(-81.214599609375 29.713266372680664)";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 29.71327;
    Float64 geospatial_lat_min 29.71327;
    Float64 geospatial_lat_resolution 0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -81.2146;
    Float64 geospatial_lon_min -81.2146;
    Float64 geospatial_lon_resolution 0;
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_positive "up";
    String geospatial_vertical_resolution "0";
    String geospatial_vertical_units "meters";
    String grid_mapping_epsg_code "EPSG:4326";
    Float64 grid_mapping_inverse_flattening 298.257223563;
    String grid_mapping_long_name "http://www.opengis.net/def/crs/EPSG/0/4326";
    String grid_mapping_name "latitude_longitude";
    Float64 grid_mapping_semi_major_axis 6378137.0;
    String history 
"Mon Nov  4 13:59:28 2019: ncatted -a project,global,a,c,, CMG_Portal MATANZAS_18/11129sgw-cal.nc
created using DoNDwvs2ncNative_addtail in Matlab 9.2.0.556344 (R2017a).,:use atmospherically corrected pressure data (\"P_1ac\") for input.:use calcNDwaves_addtail.m to find non-directional wave stats; detrend pressure signal, use Kz<0.1 to find freq cutoff. : apply JONSWAP tail past freq cutoff up to 1hz.
2019-06-19T21:02:00Z - pyaxiom - File created using pyaxiom
2024-12-12T10:47:10Z (local files)
2024-12-12T10:47:10Z https://cmgds.marine.usgs.gov/tabledap/MATANZAS_18_11129sgw_cal_nc.das";
    String id "11129sgw-cal";
    String infoUrl "https://cmgds.marine.usgs.gov/ocean-time-series/";
    Float64 initial_instrument_height 0.4;
    String INST_TYPE "Seabird Seagauge model SBE 26plus";
    Float64 InstBurstInterval 3600.0;
    String InstBurstSampleRate "2 Hz";
    String institution "Coastal and Marine Hazards and Resources Program, U.S. Geological Survey";
    String institution_url "https://woodshole.er.usgs.gov";
    Float64 InstSamplesPerBurst 4096.0;
    String InstSerial_Number "1099";
    String keywords "Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Salinity";
    String keywords_vocabulary "GCMD Science Keywords";
    Float64 latitude 29.713267;
    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 -81.2146;
    Float64 magnetic_variation -6.7;
    String metadata_link "http://doi.org/10.5066/P9GKB537";
    Float64 MOORING 1112;
    String naming_authority "gov.usgs.cmgp";
    String ncei_template_version "NCEI_NetCDF_TimeSeries_Orthogonal_Template_v2.0";
    String NCO "netCDF Operators version 4.8.1 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco)";
    String NCProperties "version=1|netcdflibversion=4.6.1|hdf5libversion=1.10.1";
    Float64 nfft 256.0;
    Float64 Northernmost_Northing 29.71327;
    String original_filename "11129sgw-cal.nc";
    String original_folder "MATANZAS_18";
    String platform_type "large Quadpod bottom lander";
    Float64 POS_CONST 0.0;
    String PROJECT "USGS Coastal Marine Geology Program";
    String project "U.S. Geological Survey Oceanographic Time-Series Data, CMG_Portal";
    String project_summary "Oceanographic and Water Quality Measurements in the Nearshore Zone at Matanzas Inlet, Florida, January - April, 2018";
    String project_title "Matanzas Inlet, FL, 2018";
    String publisher_email "emontgomery@usgs.gov";
    String publisher_name "Ellyn Montgomery";
    String publisher_phone "+1 (508) 548-8700";
    String publisher_url "https://www.usgs.gov";
    String Recovery_date "13-Apr-2018";
    String SciPi "J. Warner";
    String serial_number "1099";
    String source "USGS";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 29.71327;
    String standard_name_vocabulary "CF-1.6";
    String start_time "24-Jan-2018 17:17:05";
    String stop_time "13-Apr-2018 11:17:05";
    String subsetVariables "station_id";
    String summary "MATANZAS_18 - 11129sgw-cal";
    String time_coverage_duration "PT6804000S";
    String time_coverage_end "2018-04-13T11:17:05Z";
    String time_coverage_start "2018-01-24T17:17:05Z";
    String title "MATANZAS_18 - 11129sgw-cal";
    Float32 VAR_FILL 1.0e+35;
    Float64 WATER_DEPTH 14.9;
    String WATER_DEPTH_NOTE "(meters), ship's echosounder";
    Float64 Westernmost_Easting -81.2146;
  }
}

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.