Make A Graph

Dataset Title:	Tulane University Delft3D-FM WY2025 Mississippi River Outlet Time Series Excel Workbook
Institution:	Tulane University; distributed via the MissDelta-funded server maintained by LSU CCT (Dataset ID: TulaneDelft3DMRxlsx)
Information:	Summary \| License \| ISO 19115 \| Metadata \| Background \| Data Access Form \| Files

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Graph Type:

X Axis:

Y Axis:

Color:

Constraints	Optional Constraint #1		Optional Constraint #2

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

Graph Settings

Marker Type:

Size:

Color:

Color Bar:

Continuity:

Scale:

Minimum:

Maximum:

N Sections:

Y Axis Minimum:

Maximum:

(Please be patient. It may take a while to get the data.)

Optional:
Then set the File Type: (File Type information)
and

or view the URL:
(Documentation / Bypass this form

)

[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:

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.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  url {
    String ioos_category "Identifier";
    String long_name "File URL";
  }
  name {
    String ioos_category "Identifier";
    String long_name "File Name";
  }
  lastModified {
    String ioos_category "Time";
    String long_name "Last Modified Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  size {
    String ioos_category "Other";
    String long_name "File Size";
    String units "bytes";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "ACDD-1.3";
    String creator_email "khu1@tulane.edu, emeselhe@tulane.edu";
    String creator_name "Dr. Kelin Hu and Dr. Ehab Meselhe, Tulane University";
    String creator_type "group";
    String creator_url "https://meselhe.tulane.edu/";
    String history 
"2026-09-04T21:27:47Z (local files)
2026-09-04T21:27:47Z https://missdelta.cct.lsu.edu/tabledap/TulaneDelft3DMRxlsx.das";
    String infoUrl "https://missdelta.cct.lsu.edu/";
    String institution "Tulane University; distributed via the MissDelta-funded server maintained by LSU CCT";
    String keywords "clay, Delft3D, discharge, MissDelta, Mississippi Delta, Mississippi River, outlet time series, salinity, sand, sediment, silt, temperature, Tulane, WY2025";
    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 "This Excel workbook provides WY2025 Delft3D-FM hourly time series at Mississippi River outlet locations from the Tulane Delft3D model. Variables include discharge, salinity, temperature, and suspended sediment concentrations for sand, silt, and clay. Dataset credit: Dr. Kelin Hu (khu1@tulane.edu) and Dr. Ehab Meselhe (emeselhe@tulane.edu). The workbook is distributed through the MissDelta-funded server maintained by LSU CCT.";
    String title "Tulane University Delft3D-FM WY2025 Mississippi River Outlet Time Series Excel Workbook";
  }
}

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.

(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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