Table of Contents

Main page

Table of contents

Frames

Table of Contents

2010 Unidata NetCDF Workshop

1

2

Overview of Unidata

3

Overview of netCDF

3.0

What is netCDF?

3.1

What is netCDF, really?

3.2

NetCDF Features

3.3

3.4

Alternatives to netCDF

3.5

The NetCDF Web Site

3.6

Installing netCDF

3.7

Getting Support

4

The Two NetCDF Data Models

4.0

Models, Conventions, and Formats

4.1

NetCDF Data Models

4.2

4.3

4.4

4.5

Variable Methods

4.6

4.7

Attribute Methods

4.8

The "Classic" NetCDF Data Model

4.9

Introducing CDL (Common Data Language)

4.10

Another Simple Example

4.11

A Convention for Coordinates: Coordinate Variables

4.12

An Example of Coordinate Variables

4.13

Variables Versus Attributes

4.14

Classic NetCDF Model Limitations

4.15

The NetCDF-4 Data Model

4.16

When to Use the Enhanced Data Model

5

NetCDF Utilities

5.0

5.1

5.2

Examples of ncdump use

5.3

5.4

5.5

Examples of ncgen use

5.6

ncdump and ncgen together

5.7

5.8

Examples of nccopy use

5.9

5.10

5.11

Special attributes for netCDF-4 data

5.12

Other NetCDF Utilities

6

6.0

6.1

6.2

Where is CF Metadata Used?

6.3

A Brief History of CF

6.4

6.5

CF Standard Names

6.6

CF Appendices as references

6.7

Future Directions for CF

7

7.0

7.1

Purpose of Conventions

7.2

7.3

Coordinate Systems

7.4

Variable Grouping

7.5

Variable Attributes

7.6

Strings and Character Variables

7.7

Calendar Date and Time

7.8

Packed Data Values

7.9

Missing Data Values

7.10

8

9

Introduction to the NetCDF APIs and Example Programs

9.0

9.1

9.2

9.3

9.4

The Fortran-77 API

9.5

The Fortran-90 API

9.6

9.7

Architecture of NetCDF APIs and Libraries

9.8

9.9

9.10

9.11

Other APIs for netCDF

9.12

Some Common Errors to Avoid

9.13

The NetCDF Examples in C/F77/F90/C++

9.14

The NetCDF Example Requirements

9.15

The NetCDF Example Data Sets

9.16

The Simple XY Example Dataset

9.17

Write The Simple XY Example in F90

9.18

The Simple XY Write Example in C

9.19

The Simple XY Example in C++

9.20

Creating a NetCDF Dataset

9.21

Read The Simple XY Example in F90

9.22

The 2D Example Dataset CDL

9.23

The 4D Example Dataset CDL

9.24

Reading The 4D Example in C

9.25

Reading a NetCDF Dataset with Known Names

9.26

Reading a NetCDF Dataset with Unknown Names

9.27

Issues in Writing Generic NetCDF Software

10

Remote Access to Datasets Through netCDF-3

11

NetCDF-Java and THREDDS Data Services

12

Formats and Performance

12.0

NetCDF Format Versions

12.1

Parts of a File in Classic Format

12.2

Classic File Format

12.3

Benchmark Example

12.4

Classic API Performance Tips

12.5

Using Less Space for Data

12.6

Using Less Time for Data Access

12.7

Format and Performance Issues for Discussion

13

Introduction to NetCDF-4

13.0

The NetCDF-4 Data Model

13.1

NetCDF-4 Features

13.2

Compatibility of NetCDF-4

13.3

13.4

13.5

Multiple Unlimited Dimensions

13.6

13.7

13.8

Variable-Length Types

13.9

NetCDF-4 Performance Improvements

13.10

13.11

13.12

Ample Variable Sizes

13.13

Efficient Dynamic Schema Changes

13.14

13.15

Reader Makes Right Conversions

13.16

NetCDF-4 Status

14

Using NetCDF: The Cooperative Arctic Data and Information Service (CADIS)

15

Using netCDF - NCAR Climate Data

16

NetCDF Data Models in Detail

17

Unidata's Common Data Model and NetCDF Java Library API Overview

18

Chunking and Deflating Data with NetCDF-4

18.0

What is Chunking?

18.1

Choosing Chunksizes

18.2

Setting the Chunksizes in NetCDF-4

18.3

Example of Setting Chunksizes in Fortran 90

18.4

The Cache in NetCDF-4

18.5

Setting the Cache in NetCDF-4

18.6

Per-Variable Compression in NetCDF-4

18.7

Per-Variable Compression in NetCDF-4

18.8

Per-Variable Compression in NetCDF-4, Results

18.9

How to Use Per-Variable Compression in NetCDF-4

18.10

Contiguous Variables

18.11

Using Contiguous Variables

18.12

Example of Contiguous Variable

19

What NetCDF Developers Should Know About HDF5

20

21

Parallel I/O with NetCDF

21.0

21.1

Introduction to Parallel I/O

21.2

The pNetCDF Package

21.3

Parallel I/O in NetCDF-4

21.4

Building NetCDF-4 with Parallel I/O

21.5

Using Parallel I/O in NetCDF-4

21.6

Collective and Independent Operations with Parallel I/O in NetCDF-4

21.7

Parallel I/O Example

21.8

Example of Simple Parallel I/O Access

21.9

Example of Simple Parallel I/O Access (part 2)

21.10

Using NetCDF Parallel I/O in Fortran 90

21.11

Jumpshot Graph of Independent Parallel Data Writes

21.12

Jumpshot Graph of Collective Parallel Data Writes

22

Using Groups and NetCDF-4 Types

22.0

Groups and Types in NetCDF-4

22.1

What are Groups?

22.2

CDL Example of Groups

22.3

Possible Uses for Groups

22.4

22.5

Example Creating an Array of Strings

22.6

Additional Numeric Types

22.7

Using User Defined Types

22.8

Writing and Reading Data of User Defined Type

22.9

Learning about User Defined Types

22.10

Introduction to Compound Types

22.11

Example with Compound Types in netCDF-4

22.12

22.13

Uses for Enumerations

22.14

Enum CDL Example

22.15

Using the Opaque Type

22.16

22.17

Variable-Length Types

22.18

Example of Variable-Length Types

22.19

Using Variable Length Types

22.20

Sea Sounding Example

23

NetCDF-4 Interoperability

24

libcf: A New Library for CF Conventions Support

24.0

LibCF, the NetCDF Library for the Climate and Forecast (CF) Conventions

24.1

24.2

Current Status of LibCF

24.3

File Level Functions in LibCF

24.4

Variable Metadata in LibCF

24.5

Latitude and Longitude Functions in LibCF

24.6

Vertical Dimension Functions in LibCF

24.7

Time Functions in LibCF

24.8

Geographic Subsetting in LibCF

24.9

24.10

The LibCF Website

24.11

Future Plans for LibCF

25

26

The Future of netCDF

26.0

Goals for Unidata data access infrastructure

26.1

Near-term plans for netCDF

26.2

Long-term plans for Unidata data access infrastructure

26.3

26.4

Conclusion of Workshop