1 / 15

Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research

ODV Gridding Methods. Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research. Data Visualization – Honest Way. Data Visualization – Gridded Field. Grid Value Estimation by Weighted Averaging. Gridding Algorithm. Requirements: easy-to-use, fast and „reliable“,

nenet
Download Presentation

Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ODV Gridding Methods Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research

  2. Data Visualization – Honest Way

  3. Data Visualization – Gridded Field

  4. Grid Value Estimation by Weighted Averaging Gridding Algorithm • Requirements: • easy-to-use,fast and „reliable“, • usable for large datasets of >100000 points

  5. Variable Resolution Grid

  6. Data Visualization (2) Gridded Field „Honest“ Way

  7. Gridding Methods • Gridding is … • important and definitely needed • challenging mathematical problem • obtaining reliable fields is an „art“ Methods

  8. DIVA • Developed at U Liege • 2-Step procedure: • (1) Triangular mesh generation on possibly complex domain(s) • (2) Variational fitting to data and estimation at arbitrary points • Supports: • (1) Variable mesh resolution • (2) Multiple sub-domains • (3) Anisotropic statistics http://modb.oce.ulg.ac.be/projects/SeaDataNet/DivaUserGuide2008.pdf

  9. DIVA Integration in ODV • ODV will automatically… • create all filesfor DIVA • run DIVA meshgenerationandestimation • readanddisplaythegriddedfield

  10. Domain Example 1

  11. Domain Example 2 East Atlantic West Atlantic

  12. Example (1) - Separating domains…

  13. Example (2) - Maintaining extremes…

  14. Example (3) - Filling large gaps…

  15. Availability http://odv.awi.de Download and install latest version of ODV 4.5. 0. DIVA is included. Available for Windows, Mac OS X, and Linux.

More Related