JavaTM HDF Viewer (JHV)
User's Guide
Version 2.2
August 1998
The JavaTM HDF Viewer (JHV) is a graphic utility
designed for easily viewing the contents of HDF files.
This document provides the following information:
- User instructions for JHV Version 2.2
- A discussion of the basic types of HDF data objects --
for those unfamiliar with HDF, the Hierarchical Data Format
Details of HDF library and its APIs are available from
The NCSA HDF Home Page
(at http://hdf.ncsa.uiuc.edu/
).
Table of Contents
- 1 Introduction
- 1.1 Overview
- 1.2 JHV Features
- 1.3 Limitations
- 1.4 System
Requirements
- 1.5 Installing
and Running JHV
- 2 Getting Started
- 2.1 Starting the Program
- 2.2 Loading a File
- 2.3 Displaying Information
- 2.4 Setting the View Options
- 2.5 Viewing the Online Guide
- 3 Opening HDF Data Objects
- 3.1 File and Data
Object Annotations
- 3.2 Raster Images
- 3.3 Scientific Data Sets
- 3.4 Vdatas, or Tables
- 3.5 Vgroups
- 4 Manipulating Images in the Image Window
- 4.1 The Image Window
- 4.2 Opening the Image Window
- 4.3 Menu Commands
- 4.4 Image and Zoom Panels
- 4.5 Control Buttons
- 5 Image Processing
- 5.1 Image Editing
- 5.2 Image Filtering
- 5.3 Image Contour
- 6 Image and Data Analysis
- 6.1 Image Values
- 6.2 X-Y Plots
- 6.3 Histograms
- 6.3 Data Transformations
- 7 Animation
- 7.1 Opening the
Animation Window
- 7.2 Animation Options
and Color Management
- 8 Image Overlays
- 8.1 Opening the Image
Overlay Window
- 8.2 Overlay Options
- 9 Spreadsheets and Plots
- 9.1 Image Spreadsheets
- 9.2 Vdata Spreadsheets
- 9.3 Vdata X-Y Plots
- 10 The Palette Editor
- 10.1 Palette Editor Window
- 10.2 Palette Menu
- 10.3 Palette Options
- 10.4 Saving a New Color
Palette
- 11 Using ASCII HDF Files, or Text Files
- 11.1 Reading, Writing,
and Working with ASCII Files
- 11.2 Converting an ASCII
File to an HDF File
- Appendix A: Specification of the HDF ASCII
Interchange Format (HAIF)
- A.1 Introduction
- A.2 Specification of the
HDF ASCII Interchange Format
- A.3 An Example
List of Figures

The National Center for Supercomputing Applications
University of Illinois at Urbana-Champaign
hdfhelp@ncsa.uiuc.edu