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ERDDAP > griddap > Make A Graph ?

Dataset Title:  Lake Erie, Nowcast, 2D, All Years, Lake Erie, Nowcast, 2D, All Years, Best
Time Series [time], 2010-2018
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Institution:  NOAA/GLERL   (Dataset ID: glos_tds_af45_872b_80ca)
Information:  Summary ? | License ? | Metadata | Background (external link) | Data Access Form
 
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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 1.2623076e+9, 1.5147648e+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";
  }
  time_run {
    String _CoordinateAxisType "RunTime";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "run times for coordinate = time";
    String standard_name "forecast_reference_time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  time_offset {
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "offset hour from start of run for coordinate = time";
    String standard_name "forecast_period";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.dataset.conv.CF1Convention";
    String author "gregory.lang@noaa.gov";
    String cdm_data_type "Grid";
    String comment1 "Lake Erie  2 km bathymetric grid";
    String comment2 "1-hourly model 2D output starting at validtime plus 1 hr";
    String comment3 "Generated 4x per day following the 0,6,12,18 Z Nowcast runs";
    String contributor_name "GLOS DMAC, GLERL";
    String contributor_role "distributor, producer";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creation_date "Sat Dec 30 15:14:20 2017 GMT";
    String creator_email "david.schwab@noaa.gov";
    String creator_name "Dr. Dave Schwab";
    String creator_type "person";
    String creator_url "https://www.glerl.noaa.gov/";
    String disclaimer "https://www.glerl.noaa.gov/home/notice.html";
    String history 
"Sat Dec 30 15:14:42 2017: ncks -O --deflate=1 tmp/e201730100.out1.nc4 tmp/e201730100.out1.nc
Sat Dec 30 15:14:37 2017: ncks -O --fl_fmt=netcdf4_classic nc_files/e201730100.out1.nc tmp/e201730100.out1.nc4 ;
FMRC Best Dataset
2018-07-16T14:49:34Z http://tds.glos.us/thredds/dodsC/glos/glcfs/archiveall/erie/ncfmrc-2d/Lake_Erie_-_Nowcast_-_2D_-_All_Years_best.ncd
2018-07-16T14:49:34Z http://upwell.pfeg.noaa.gov/griddap/glos_tds_af45_872b_80ca.das";
    String id "glos/glcfs/archiveall/erie/ncfmrc-2d/Lake_Erie_-_Nowcast_-_2D_-_All_Years_best.ncdhttp://tds.glos.us/thredds/dodsC/glos/glcfs/archiveall/erie/ncfmrc-2d/Lake_Erie_-_Nowcast_-_2D_-_All_Years_best.ncd";
    String infoUrl "https://www.glerl.noaa.gov/res/glcfs/";
    String institution "NOAA/GLERL";
    String keywords "all, best, best time series, coastal, coordinate, data, environmental, erie, forecast, forecast_period, forecast_reference_time, forecasting, glcfs, glerl, glos, great, great lakes, hour, laboratory, lake, lakes, noaa, nowcast, observing, offset, period, reference, research, run, series, start, system, time, time series, time_offset, time_run, times, years";
    String license "No usage restrictions";
    String location "Proto fmrc:Lake_Erie_-_Nowcast_-_2D_-_All_Years";
    String metadata_link "http://data.glos.us/portal/";
    String model "GLERL Wave Model-Great Lakes, Princeton Ocean Model-Great Lakes";
    String naming_authority "GLOS";
    String NCO "4.3.7";
    String publisher_email "dmac@glos.us";
    String publisher_name "GLOS DMAC";
    String publisher_type "institution";
    String publisher_url "https://www.glos.us";
    String references "https://www.glerl.noaa.gov/res/glcfs/";
    String sourceUrl "http://tds.glos.us/thredds/dodsC/glos/glcfs/archiveall/erie/ncfmrc-2d/Lake_Erie_-_Nowcast_-_2D_-_All_Years_best.ncd";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "GLCFS - Lake Erie - Nowcast - 2D. Best time series, taking the data from the most recent run available. Great Lakes Coastal Forecasting System. Lake Erie  2 km bathymetric grid. 1-hourly model 2D output starting at validtime plus 1 hr. Generated 4x per day following the 0,6,12,18 Z Nowcast runs";
    String time_coverage_end "2018-01-01T00:00:00Z";
    String time_coverage_start "2010-01-01T01:00:00Z";
    String title "Lake Erie, Nowcast, 2D, All Years, Lake Erie, Nowcast, 2D, All Years, Best Time Series [time], 2010-2018";
    String validtime "01-JAN-2013 00:00 GMT";
    String validtime_DOY "001, 2013 00:00 GMT";
  }
}

 

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://upwell.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://upwell.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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