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ERDDAP > griddap > Make A Graph ?

Dataset Title:  Meteo Galicia SWAN interpolated output (SWAN agg best) 2021-present Subscribe RSS
Institution:  MeteoGalicia   (Dataset ID: metgal_swan)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
Graph Type:  ?
X Axis:  ?
Y Axis:  ?
Color:  ?
 
Dimensions ?    Start ?    Stop ?
time (UTC) ?     specify just 1 value →
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< <
latitude (degrees_north) ?
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< slider >
longitude (degrees_east) ?
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    -
< slider >
 
Graph Settings
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   
 
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Optional:
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    Click on the map to specify a new center point. ?
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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:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6225056e+9, 1.6244064e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "Forecast time for ForecastModelRunCollection";
    Float64 missing_value NaN;
    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 42.0415, 42.9535;
    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 -9.3005, -8.6075;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  significant_wave_height {
    Int32 _ChunkSizes 1, 305, 232;
    Float32 _FillValue -99999.99;
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    Int32 least_significant_digit 2;
    String long_name "significant wave height";
    Float32 missing_value -999.0;
    String standard_name "significant_wave_height";
    String units "m";
  }
  swell_wave_height {
    Int32 _ChunkSizes 1, 305, 232;
    Float32 _FillValue -99999.99;
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    Int32 least_significant_digit 2;
    String long_name "swell significant wave height";
    Float32 missing_value -999.0;
    String standard_name "swell_significant_wave_height";
    String units "m";
  }
  dirm {
    Int32 _ChunkSizes 1, 305, 232;
    Float32 _FillValue -99999.99;
    String colorBarMaximum "360";
    String colorBarMinimum "0";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    Int32 least_significant_digit 2;
    String long_name "mean wave direction";
    Float32 missing_value -999.0;
    String standard_name "mean_wave_direction";
    String units "degrees";
  }
  dirp {
    Int32 _ChunkSizes 1, 305, 232;
    Float32 _FillValue -99999.99;
    String colorBarMaximum "360";
    String colorBarMinimum "0";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    Int32 least_significant_digit 2;
    String long_name "mean wave direction";
    Float32 missing_value -999.0;
    String standard_name "mean_wave_direction";
    String units "degrees";
  }
  rtp {
    Int32 _ChunkSizes 1, 305, 232;
    Float32 _FillValue -99999.99;
    String colorBarMaximum "15";
    String colorBarMinimum "0";
    String colorBarPalette "KT_tempo";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    Int32 least_significant_digit 2;
    String long_name "tps";
    Float32 missing_value -999.0;
    String standard_name "mean_wave_period";
    String units "s";
  }
  tm01 {
    Int32 _ChunkSizes 1, 305, 232;
    Float32 _FillValue -99999.99;
    String colorBarMaximum "20.0";
    String colorBarMinimum "0.0";
    String colorBarPalette "KT_tempo";
    String comment "Tm01 (mean wave period)";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    Int32 least_significant_digit 2;
    String long_name "MeanWavePeriod_Tm01";
    Float32 missing_value -999.0;
    String standard_name "sea_surface_wave_mean_period_from_variance_spectral_density_first_frequency_moment";
    String units "s";
  }
  xwnd {
    Int32 _ChunkSizes 1, 305, 232;
    Float32 _FillValue -99999.99;
    String colorBarMaximum "15.0";
    String colorBarMinimum "-15.0";
    String coordinates "time latitude longitude";
    String ioos_category "Wind";
    Int32 least_significant_digit 2;
    String long_name "U-Component of Wind";
    Float32 missing_value -99999.99;
    String standard_name "eastward_wind";
    String units "m s-1";
  }
  ywnd {
    Int32 _ChunkSizes 1, 305, 232;
    Float32 _FillValue -99999.99;
    String colorBarMaximum "15.0";
    String colorBarMinimum "-15.0";
    String coordinates "time latitude longitude";
    String ioos_category "Wind";
    Int32 least_significant_digit 2;
    String long_name "V-Component of Wind";
    Float32 missing_value -99999.99;
    String standard_name "northward_wind";
    String units "m s-1";
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.dataset.conv.CF1Convention";
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_name "Meteo Galicia";
    String creator_url "http://www.meteogalicia.es";
    Float64 Easternmost_Easting -8.6075;
    Float64 geospatial_lat_max 42.9535;
    Float64 geospatial_lat_min 42.0415;
    Float64 geospatial_lat_resolution 0.002999999999999997;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -8.6075;
    Float64 geospatial_lon_min -9.3005;
    Float64 geospatial_lon_resolution 0.0029999999999999983;
    String geospatial_lon_units "degrees_east";
    String history 
"FMRC Best Dataset
2024-05-20T13:33:11Z http://thredds.marine.ie/thredds/dodsC/MYCOAST/SWAN/GALICIA/MyCOAST_V1_MeteoGalicia_SWAN_galicia_01hr_aggregate_PR.nc
2024-05-20T13:33:11Z http://erddap.digitalocean.ie/griddap/metgal_swan.das";
    String infoUrl "http://www.meteogalicia.es";
    String institution "MeteoGalicia";
    String keywords "agg, best, coordinate, data, forecast, forecast_period, forecast_reference_time, hour, interpolated, meteogalicia, model, nearshore, offset, output, period, reference, run, simulating, start, swan, time, time_offset, time_run, times, waves";
    String license "Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/)";
    String location "Proto fmrc:SWAN-agg";
    Float64 Northernmost_Northing 42.9535;
    String references "http://www.meteogalicia.es";
    String source "UNSWAN -> SWAN";
    String sourceUrl "http://thredds.marine.ie/thredds/dodsC/MYCOAST/SWAN/GALICIA/MyCOAST_V1_MeteoGalicia_SWAN_galicia_01hr_aggregate_PR.nc";
    Float64 Southernmost_Northing 42.0415;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary 
"Simulating WAves Nearshore model (SWAN) interpolated output. MeteoGalicia 
data from https://thredds-meteo.cesga.es/thredds/dodsC/SWAN/agg/SWAN_agg_best.ncd.das .";
    String testOutOfDate "now+4days";
    String time_coverage_end "2021-06-23T00:00:00Z";
    String time_coverage_start "2021-06-01T00:00:00Z";
    String Title "SWAN interpolated output";
    String title "Meteo Galicia SWAN interpolated output (SWAN agg best) 2021-present";
    Float64 Westernmost_Easting -9.3005;
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its projection 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.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.


 
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