ERDDAP > tabledap > Make A Graph

Dataset Title:	Chinese_VOS_observation_data
Institution:	NMDIS   (Dataset ID: Chinese_VOS_observation_data)
Range:	longitude = -180.0 to 179.48°E, latitude = -77.41 to 82.35°N, time = 2017-04-10T02:00:00Z to 2023-03-31T19:00:00Z
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Subset | Data Access Form | Files

 

Graph Type:  lines linesAndMarkers markers sticks vectors X Axis:  YEAR MONTH DAY HOUR time latitude longitude WIND_DIRECTION WIND_SPEED Y Axis:  YEAR MONTH DAY HOUR time latitude longitude WIND_DIRECTION WIND_SPEED Color:  YEAR MONTH DAY HOUR time latitude longitude WIND_DIRECTION WIND_SPEED   Constraints Optional Constraint #1 Optional Constraint #2 SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE     != =~ <= >= = < >     != =~ <= >= = < >     SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE     != =~ <= >= = < >     != =~ <= >= = < >     SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE     != =~ <= >= = < >     != =~ <= >= = < >     SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE     != =~ <= >= = < >     != =~ <= >= = < >     SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE     != =~ <= >= = < >     != =~ <= >= = < >       Server-side Functions  distinct() orderBy orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE SHIPNAME YEAR MONTH DAY HOUR time SHIP_SIGN LATITUDE_OF_OBSERVATION latitude LONGITUDE_OF_OBSERVATION longitude WIND_DIRECTION WIND_SPEED AIR_TEMPERATURE SEA_LEVEL_PRESSURE QC_FLAG_FOR_TIME QC_FLAG_FOR_POSITION QC_FLAG_FOR_WIND_DIRECTION QC_FLAG_FOR_WIND_SPEED QC_FLAG_FOR_AIR_TEMPERATURE QC_FLAG_FOR_SEA_LEVEL_PRESSURE ")   Graph Settings Marker Type:  None Plus X Dot Square Filled Square Circle Filled Circle Up Triangle Filled Up Triangle Borderless Filled Square Borderless Filled Circle Borderless Filled Up Triangle  Size:  3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Color:  Color Bar:  BlackBlueWhite BlackGreenWhite BlackRedWhite BlackWhite BlueWhiteRed BlueWideWhiteRed LightRainbow Ocean OceanDepth Rainbow Rainbow2 Rainfall ReverseRainbow RedWhiteBlue RedWhiteBlue2 RedWideWhiteBlue Spectrum Topography TopographyDepth WhiteBlueBlack WhiteGreenBlack WhiteRedBlack WhiteBlack YellowRed KT_algae KT_amp KT_balance KT_curl KT_deep KT_delta KT_dense KT_gray KT_haline KT_ice KT_matter KT_oxy KT_phase KT_solar KT_speed KT_tempo KT_thermal KT_turbid  Continuity:  Continuous Discrete  Scale:  Linear Log    Minimum:   Maximum:   N Sections:  2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Draw land mask:  under over outline off Y Axis Minimum:   Maximum:    Ascending Descending Linear Log   Redraw the Graph (Please be patient. It may take a while to get the data.)   Optional: Then set the File Type: .asc .csv .csvp .csv0 .dataTable .das .dds .dods .esriCsv .fgdc .geoJson .graph .help .html .htmlTable .iso19115 .itx .json .jsonlCSV1 .jsonlCSV .jsonlKVP .mat .nc .ncHeader .ncCF .ncCFHeader .ncCFMA .ncCFMAHeader .nccsv .nccsvMetadata .ncoJson .odvTxt .subset .tsv .tsvp .tsv0 .wav .xhtml .kml .smallPdf .pdf .largePdf .smallPng .png .largePng .transparentPng (File Type information) and or view the URL: (Documentation / Bypass this form )

Click on the map to specify a new center point. Zoom:  Time range:  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 second(s) minute(s) hour(s) day(s) month(s) year(s)

 

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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.
   

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  SHIPNAME {
    String ioos_category "Other";
    String long_name "SHIPNAME";
  }
  YEAR {
    Int16 _FillValue 32767;
    Int16 actual_range 2, 2023;
    String ioos_category "Time";
    String long_name "YEAR";
  }
  MONTH {
    Int16 _FillValue 32767;
    Int16 actual_range 1, 32;
    String ioos_category "Time";
    String long_name "MONTH";
  }
  DAY {
    Int16 _FillValue 32767;
    Int16 actual_range 0, 53;
    String ioos_category "Time";
    String long_name "DAY";
  }
  HOUR {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 47;
    String ioos_category "Time";
    String long_name "HOUR";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.4917896e+9, 1.6802892e+9;
    String axis "T";
    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";
  }
  SHIP_SIGN {
    String ioos_category "Other";
    String long_name "SHIP SIGN";
  }
  LATITUDE_OF_OBSERVATION {
    String ioos_category "Location";
    String long_name "LATITUDE OF OBSERVATION";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -77.41, 82.35;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  LONGITUDE_OF_OBSERVATION {
    String ioos_category "Location";
    String long_name "LONGITUDE OF OBSERVATION";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -180.0, 179.48;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  WIND_DIRECTION {
    Float64 _FillValue 999.0;
    Float64 actual_range 0.0, 360.0;
    String ioos_category "Other";
    String long_name "WIND DIRECTION";
    String P01 "EWDAZZ01";
    String P02 "EWSB";
    String P06 "DEGN";
    String SN "WDIR";
    String units "degrees";
  }
  WIND_SPEED {
    Float64 _FillValue 99.0;
    Float64 actual_range -7.0, 90.0;
    String ioos_category "Other";
    String long_name "WIND SPEED";
    String P01 "EWSBZZ01";
    String P02 "EWSP";
    String P06 "UVAA";
    String SN "WSPD";
    String units "m/s";
  }
  AIR_TEMPERATURE {
    String ioos_category "Other";
    String long_name "AIR TEMPERATURE";
    String P02 "CDTA";
    String P06 "UPAA";
    String units "degrees C";
  }
  SEA_LEVEL_PRESSURE {
    String ioos_category "Other";
    String long_name "SEA LEVEL PRESSURE";
    String P02 "CAPH";
    String P06 "UPBB";
    String units "mb";
  }
  QC_FLAG_FOR_TIME {
    String flag_meanings "q means questionable,blank means good";
    String ioos_category "Other";
    String long_name "QC FLAG FOR TIME";
  }
  QC_FLAG_FOR_POSITION {
    String flag_meanings "q means questionable,blank means good";
    String ioos_category "Other";
    String long_name "QC FLAG FOR POSITION";
  }
  QC_FLAG_FOR_WIND_DIRECTION {
    String flag_meanings "q means questionable,blank means good";
    String ioos_category "Other";
    String long_name "QC FLAG FOR WIND DIRECTION";
  }
  QC_FLAG_FOR_WIND_SPEED {
    String flag_meanings "q means questionable,blank means good";
    String ioos_category "Other";
    String long_name "QC FLAG FOR WIND SPEED";
  }
  QC_FLAG_FOR_AIR_TEMPERATURE {
    String flag_meanings "q means questionable,blank means good";
    String ioos_category "Other";
    String long_name "QC FLAG FOR AIR TEMPERATURE";
  }
  QC_FLAG_FOR_SEA_LEVEL_PRESSURE {
    String flag_meanings "q means questionable,blank means good";
    String ioos_category "Other";
    String long_name "QC FLAG FOR SEA LEVEL PRESSURE";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3, NCCSV-1.1";
    Float64 Easternmost_Easting 179.48;
    Float64 geospatial_lat_max 82.35;
    Float64 geospatial_lat_min -77.41;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.48;
    Float64 geospatial_lon_min -180.0;
    String geospatial_lon_units "degrees_east";
    String history 
"2023-05-28T00:41:09Z (local files)
2023-05-28T00:41:09Z https://erddap.emodnet.eu/tabledap/Chinese_VOS_observation_data.das";
    String infoUrl "???";
    String institution "NMDIS";
    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 Northernmost_Northing 82.35;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -77.41;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "SHIPNAME,SHIP_SIGN";
    String summary "Chinese_VOS_observation_data";
    String time_coverage_end "2023-03-31T19:00:00Z";
    String time_coverage_start "2017-04-10T02:00:00Z";
    String title "Chinese_VOS_observation_data";
    Float64 Westernmost_Easting -180.0;
  }
}

 

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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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