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Dataset Title:  Amchitka Island Subscribe RSS
Institution:  NOAA National Tsunami Warning Center (NTWC)   (Dataset ID: amchitka-island)
Range: longitude = 179.29195 to 179.29195°E, latitude = 51.40789 to 51.40789°N, time = 2014-08-25T23:00:00Z to 2018-08-27T15:00:00Z
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
Graph Type:  ?
X Axis: 
Y Axis: 
-1 +1
Constraints ? Optional
Constraint #1 ?
Constraint #2 ?
Server-side Functions ?
 distinct() ?
? (" ")
Graph Settings
Marker Type:   Size: 
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   Ascending: 
(Please be patient. It may take a while to get the data.)
Then set the File Type: (File Type information)
or view the URL:
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    Click on the map to specify a new center point. ?
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:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    Int32 _ChunkSizes 21491;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.4090076e+9, 1.535382e+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";
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 51.407889, 51.407889;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 179.291944, 179.291944;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  z {
    Int32 _ChunkSizes 1;
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "up";
    Float64 actual_range 0.0, 0.0;
    String axis "Z";
    String ioos_category "Location";
    Float64 least_significant_digit 2.0;
    String long_name "Z";
    String positive "up";
    String standard_name "height";
    String units "m";
  sea_surface_height_above_sea_level_geoid_local_station_datum {
    Int32 _ChunkSizes 21491, 1;
    Float64 _FillValue -9999.0;
    Float64 actual_range 4.741, 6.5587;
    String ancillary_variables "sea_surface_height_above_sea_level_geoid_local_station_datum_qc_agg sea_surface_height_above_sea_level_geoid_local_station_datum_qc_tests";
    String id "1001329";
    String ioos_category "Other";
    String long_name "Water Level";
    Float64 missing_value -9999.0;
    String platform "station";
    String standard_name "sea_surface_height_above_sea_level";
    String units "m";
    String urn "";
    String vertical_datum "Local Station Datum";
  sea_surface_height_above_sea_level_geoid_local_station_datum_qc_agg {
    Int32 _ChunkSizes 21491, 1;
    Int32 _FillValue 9;
    String _Unsigned "true";
    Int32 actual_range 1, 1;
    String flag_method "qartod_aggregate";
    String flag_values "1, 2, 3, 4, 9";
    String ioos_category "Other";
    String long_name "Water Level QARTOD Aggregate Flag";
    Int32 missing_value 9;
    String references "";
    String standard_name "sea_surface_height_above_sea_level status_flag";
  sea_surface_height_above_sea_level_geoid_local_station_datum_qc_tests {
    Int32 _ChunkSizes 21491, 1;
    String _Unsigned "true";
    String comment "11-character string with results of individual QARTOD tests. 1: Gap Test, 2: Syntax Test, 3: Location Test, 4: Gross Range Test, 5: Climatology Test, 6: Spike Test, 7: Rate of Change Test, 8: Flat-line Test, 9: Multi-variate Test, 10: Attenuated Signal Test, 11: Neighbor Test";
    String flag_method "qartod_tests";
    String flag_values "1, 2, 3, 4, 9";
    String ioos_category "Other";
    String long_name "Water Level QARTOD Individual Tests";
    String references "";
    String standard_name "sea_surface_height_above_sea_level status_flag";
  station {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String ioos_code "urn:ioos:station:com.axiomdatascience:100159";
    String long_name "Amchitka Island";
    String short_name "amchitka-island";
    String type "fixed";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "sea_surface_height_above_sea_level_geoid_local_station_datum";
    String contributor_email "";
    String contributor_name "Axiom Data Science";
    String contributor_role "processor";
    String contributor_role_vocabulary "CI_RoleCode";
    String contributor_url "";
    String Conventions "IOOS-1.2, CF-1.6, ACDD-1.3, NCCSV-1.0";
    String creator_institution "NOAA National Tsunami Warning Center (NTWC)";
    String creator_name "NOAA National Tsunami Warning Center (NTWC)";
    String creator_sector "gov_federal";
    String creator_type "institution";
    String creator_url "";
    Float64 Easternmost_Easting 179.291944;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 51.407889;
    Float64 geospatial_lat_min 51.407889;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.291944;
    Float64 geospatial_lon_min 179.291944;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "up";
    String geospatial_vertical_units "m";
    String history 
"Downloaded from NOAA National Tsunami Warning Center (NTWC) at
    Int32 id 100159;
    String info_url "";
    String infoUrl "";
    String institution "NOAA National Tsunami Warning Center (NTWC)";
    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 naming_authority "com.axiomdatascience";
    Float64 Northernmost_Northing 51.407889;
    String platform "fixed";
    String platform_vocabulary "";
    String publisher_institution "NOAA National Tsunami Warning Center (NTWC)";
    String publisher_name "NOAA National Tsunami Warning Center (NTWC)";
    String publisher_sector "gov_federal";
    String publisher_type "institution";
    String publisher_url "";
    String references ",,";
    String sourceUrl "";
    Float64 Southernmost_Northing 51.407889;
    String standard_name_vocabulary "NetCDF Climate and Forecast (CF) Metadata Convention Standard Name";
    String summary "Timeseries data from 'Amchitka Island' (amchitka-island)";
    String time_coverage_end "2018-08-27T15:00:00Z";
    String time_coverage_start "2014-08-25T23:00:00Z";
    String title "Amchitka Island";
    Float64 Westernmost_Easting 179.291944;


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.

Tabledap request URLs must be in the form{?query}
For example,,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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