Upload
gen
View
41
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Plug and Play Scientific Graphics with SGT. Donald Denbo NOAA/PMEL-UW/JISAO Presented by Christopher Moore NOAA/PMEL-UW/JISAO. http://www.epic.noaa.gov/java/sgt. Introduction. The Scientific Graphics Toolkit (SGT) is a collection of Java classes to produce scientific 2D graphics. - PowerPoint PPT Presentation
Citation preview
Plug and Play Scientific Graphics with SGT
Donald DenboNOAA/PMEL-UW/JISAO
Presented byChristopher MooreNOAA/PMEL-UW/JISAO
http://www.epic.noaa.gov/java/sgt
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 2
Introduction• The Scientific Graphics
Toolkit (SGT) is a collection of Java classes to produce scientific 2D graphics.
• SGT is a flexible system, allowing developers to produce custom graphics.
• SGT, while popular, does require an expert programmer to use it effectively.
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 3
Goals for Plug n’ Play Graphics
• Create easy-to-use JavaBeans from the SGT classes.
• JavaBeans enables beginner and intermediate developers a quick entry into SGT graphics.
• SGT Beans handles most events and provides tools to easily customize the appearance of the plot.
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 4
Why JavaBeans?
• Provide component technology for Java. Components enhance re-usability in the Java environment.
• Can easily be used in IDE and RAD environments.• Bean Customizers can be developed to work within
IDE and RAD tools.• Beans provide a standard mechanism to interact with
development tools and simplify access to complicated Java class libraries.
• Beans have an object persistence mechanism. (XML serialization)
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 5
Java Development Tools
• BeanBuilderAvailable free from Sun Microsystems for JVM 1.4 or later
• Java Integrated Development Environments (JBuilder, Eclipse, NetBeans)
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 6
BeanBuilderEvent Connection Component Layout
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 7
SGT JavaBeans
SGT PanelModel Customizer
SGT Page Bean with graphics
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 10
Design
Page
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 11
Page JavaBean
• Visual JavaBean. Page can be added to any swing container.
• Page can have any number of Panels placed inside it. Each Panel provides an independent graphical display of data from the DataModel.
• The location and size of the Panels are specified in the PanelModel.
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 12
PanelModel JavaBean
• Non-visual JavaBean.• PanelModel maintains:
– location and size of Panels on Page– DataGroups and their positions on a Panel– Legend position on a Panel– Titles and annotation positions on a Panel
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 13
DataModel JavaBean
• Non-visual JavaBean.• DataModel uses information from the
PanelModel to specify the connection between data and Panel/DataGroup.
• Contains the SGTData and Attribute objects.
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 14
Real World Example1. User opens ncReader and
selects a netCDF file.2. ncReader accesses the
PanelModel to generate a list of Panel/DataGroups.
3. User selects which Panel/DataGroup the data subset should be attached.
4. ncReader adds the data with the Panel/DataGroup information to the DataModel.
ncReader
dataDataModel
PanelModel Page
2003-06-05 NOAAResearch WebShop 2003, Longmont, CO 15
Future Directions
• Design is completed and implementation will be finished by September 2003.
• Beta version of SGT Beans will be made available once an initial implementation of the Page, PanelModel, DataModel, and Customizer are complete (~1 month).
• User feedback will help guide additional development.
http://www.epic.noaa.gov/java/sgt