ERDDAP > tabledap > Make A Graph

Dataset Title:	[pH internal Consistency Experiment: Measured pH and nutrients] - Measured pH and nutrient data acquired during the pH internal consistency experiment. (Improving Accuracy and Precision of Marine Inorganic Carbon Measurements)
Institution:	BCO-DMO   (Dataset ID: bcodmo_dataset_905357_v1)
Information:	Summary | License | Metadata | Background | Data Access Form | Files

 

Graph Type:  lines linesAndMarkers markers X Axis:  Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev Y Axis:  Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev Color:  Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev   Constraints Optional Constraint #1 Optional Constraint #2 Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev     != =~ <= >= = < >     != =~ <= >= = < > Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev     != =~ <= >= = < >     != =~ <= >= = < > Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev     != =~ <= >= = < >     != =~ <= >= = < > Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev     != =~ <= >= = < >     != =~ <= >= = < > Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev     != =~ <= >= = < >     != =~ <= >= = < >   Server-side Functions  distinct() orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev Batch Practical_Salinity Temp meas_pHt pHt_std_err meas_TA TA_std meas_DIC DIC_std equilibrator_pCO2 PO4 PO4_stdev Si Si_stdev ")   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 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 )

 

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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 {
  Batch {
    String long_name "Batch";
    String units "unitless";
  }
  Practical_Salinity {
    Float32 actual_range 14.618, 38.885;
    String long_name "Practical_salinity";
    String units "unitless";
  }
  Temp {
    Float32 actual_range -1.906, 40.075;
    String long_name "Temp";
    String units "degrees Celsius (˚C)";
  }
  meas_pHt {
    Float32 actual_range 7.2222, 8.7011;
    String long_name "Meas_pht";
    String units "unitless";
  }
  pHt_std_err {
    Float32 actual_range 7.0e-4, 0.0146;
    String long_name "Pht_std_err";
    String units "unitless";
  }
  meas_TA {
    Float32 actual_range 974.25, 2529.67;
    String long_name "Meas_ta";
    String units "micromoles per kilogram (µmol/kg)";
  }
  TA_std {
    Float32 actual_range 0.23, 2.83;
    String long_name "Ta_std";
    String units "micromoles per kilogram (µmol/kg)";
  }
  meas_DIC {
    Float32 actual_range 882.75, 2398.75;
    String long_name "Meas_dic";
    String units "micromoles per kilogram (µmol/kg)";
  }
  DIC_std {
    Float32 actual_range 0.21, 3.08;
    String long_name "Dic_std";
    String units "micromoles per kilogram (µmol/kg)";
  }
  equilibrator_pCO2 {
    Float32 actual_range 157.2, 1175.7;
    String long_name "Equilibrator_pco2";
    String units "microatmospheres (µatm)";
  }
  PO4 {
    Float32 actual_range 0.0, 0.5;
    String long_name "Po4";
    String units "micromoles per kilogram (µmol/kg)";
  }
  PO4_stdev {
    Float32 actual_range 0.0, 0.37;
    String long_name "Po4_stdev";
    String units "micromoles per kilogram (µmol/kg)";
  }
  Si {
    Float32 actual_range 0.1, 16.8;
    String long_name "Si";
    String units "micromoles per kilogram (µmol/kg)";
  }
  Si_stdev {
    Float32 actual_range 0.03, 0.68;
    String long_name "Si_stdev";
    String units "micromoles per kilogram (µmol/kg)";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_url "https://www.bco-dmo.org/";
    String doi "10.26008/1912/bco-dmo.905357.1";
    String history 
"2024-11-21T15:45:22Z (local files)
2024-11-21T15:45:22Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_905357_v1.das";
    String infoUrl "https://www.bco-dmo.org/dataset/905357";
    String institution "BCO-DMO";
    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 sourceUrl "(local files)";
    String summary 
"These data include the measured pHt, total alkalinity, dissolved inorganic carbon, raw pHt absorbance, and calculated pHt of 25 batches of seawater as a function of temperature, salinity, and pCO2. These data were used to evaluate the internal consistency of 120 different possible combinations of CO2 system constants. 

The marine inorganic carbon system can be calculated with two measured parameters due to thermodynamic relationships. However, there are many different parameterizations for the required constants and the most accurate or best is not known. These data were used to evaluate the constants and make recommendations for which constants to use, and how to perform CO2 system calculations.";
    String title "[pH internal Consistency Experiment: Measured pH and nutrients] - Measured pH and nutrient data acquired during the pH internal consistency experiment. (Improving Accuracy and Precision of Marine Inorganic Carbon Measurements)";
  }
}

 

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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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