NdEdit for Interactive in-situ Data Selection

John R. Osborne and Donald W. Denbo NOAA/PMEL

American Meteorological Society / IIPS January 13-17, 2002, Orlando, FL

The Problem: Locating and selecting individual observations from a number of

large collections of in-situ observations is complex. Designing software that makes this process intuitive for the user is

challenging The Solution:

NdEdit, An intuitive, interactive Java tool For investigating the space-time relationship of in-situ data observations Provides graphical views of the locations of selected datasets in linked

windows showing selected 2D views of space and time distribution Filtering, selecting, sub-setting, or zooming in one 2D view is reflected in

the other views Provides interactive linked browsing of data locations in space and time E.g., a user can apply a narrow time filter in one window, and see the data

locations in that time band in the latitude-longitude map view.

Overview

NdEditCustomized for in-situ data

Java tool Platform independent Java Bean architecture

allows integration with other tools

Linked windows Choice of 2D views:

latitude-longitude (map), latitude-depth, latitude-time, longitude-depth, longitude-time, and depth-time

Interactive with zoom

Map Features Overlay bathymetry Overlay coastlines

Filter or subset data Browse time-space distribution

of in-situ data Filter in any 2D view Time or space (lat, lon, z) filters Remove or retain stations in

filter region

Selection Tools Box Polygon Multi-segment section line with

user-settable width Single station selection Non-contiguous selections Tools work in all 2D views

Map view

Data is distributed in time from 1986-1991

Latitude-time view

NdEdit: Linked windows show in-situ data locations in time and space

We can use the time filter to see where this 1987 data lies in space…

Sliding the time window (right) reveals geographic location of data in map view (left)

1990 1987

Browsing data locations in time

1986-1991

Use Section Tool to select stations along a multi-segment path. In this example, stations are being selected along a depth contour.

Results of Section Tool: Note highlighted stations along depth contour and corresponding points in time/latitude panel.

Selecting a section line in a time window

In-situ data applicationsutilizing NdEdit

Java OceanAtlas 3.0 Interactive desktop browsing of ocean profile datasets http://odf.ucsd.edu/joa

See AMS IIPS agenda for presentations

In-situ data applicationsutilizing NdEdit

Climate Data Portal Distributed data access http://www.epic.noaa.gov/cdp/

PMEL EPIC system For management/display/analysis of oceanographic in-situ datasets http://www.epic.noaa.gov/

Collaboration tools for Fisheries-Oceanography OceanShare, http://www.epic.noaa.gov/collab/

See AMS IIPS agenda for presentations

NdEdit Summary

Unique and sophisticated interactive Java tool For locating and selecting individual observations from a number

of large collections of in-situ observations Implemented as a “Java bean” in platform-neutral Java

language Utilized within a growing number of applications

More information about NdEdit

NdEdit websitehttp://www.pmel.noaa.gov/epic/software/JavaNdedit.htm

On-line help and tutorialhttp://www.epic.noaa.gov/epic/software/ndedit/