Table of Contents

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Table of Contents

2012 Unidata NetCDF Workshop

1

Welcome, Logistics, and Introduction

1.0

1.1

1.2

Online Resources

1.3

1.4

The NetCDF and Workshops Teams

1.5

Feedback on this workshop

1.6

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

Alternatives to netCDF

3.4

3.5

The NetCDF Web Site

3.6

Getting Support

4

Building and installing netCDF

5

The NetCDF Classic Data Model

5.0

5.1

5.2

5.3

Variable Methods

5.4

5.5

Attribute Methods

5.6

The "Classic" NetCDF Data Model

5.7

Introducing CDL (Common Data Language)

5.8

Another Simple Example

5.9

A Convention for Coordinates: Coordinate Variables

5.10

An Example of Coordinate Variables

5.11

Variables Versus Attributes

5.12

Classic NetCDF Model Limitations

6

NetCDF Utilities

6.0

6.1

6.2

Examples of ncdump use

6.3

6.4

Examples of ncgen use

6.5

ncdump and ncgen together

6.6

6.7

Examples of nccopy use

6.8

Common Data Model utilities

6.9

6.10

6.11

Other NetCDF Utilities

7

Remote Access to Datasets Through netCDF-3

8

NetCDF-C for Windows

9

NetCDF Library Architecture

9.0

9.1

Layers and layers of libraries

9.2

The dispatch library

10

Introduction to the NetCDF APIs

10.0

10.1

10.2

10.3

The Fortran-90 API

10.4

The Fortran-77 API

10.5

10.6

10.7

10.8

10.9

Other APIs for netCDF

11

Using netCDF in programs

11.0

NetCDF Examples for C, Java, F90, F77, and C++

11.1

Creating a NetCDF Dataset

11.2

Reading a NetCDF Dataset with Known Names

11.3

Reading a NetCDF Dataset with Unknown Names

11.4

Some Common Errors to Avoid

11.5

The Simple XY Write Example in C

11.6

Write The Simple XY Example in F90

11.7

The Simple XY Example in C++

11.8

11.9

The NetCDF Example Data Sets

11.10

The Simple XY Example Dataset

11.11

The 2D Example Dataset CDL

11.12

The 4D Example Dataset CDL

12

Diskless netCDF files

13

Introduction to NetCDF-4

14

Formats and Performance

14.0

NetCDF Format Versions

14.1

Parts of a File in Classic Format

14.2

Classic File Format Performance

14.3

Benchmark Example

14.4

NetCDF Classic Performance Tips

14.5

NetCDF-4 File Format

14.6

NetCDF-4 Performance Tips

14.7

Using Less Space for Data

14.8

Making Data Access Faster

15

Utilities for NetCDF-4

15.0

CDL extended for netCDF enhanced data model

15.1

15.2

CDL for Compound Types

15.3

CDL for Variable Length (vlen) Types

15.4

CDL for Enumeration (enum) Types

15.5

Options for ncgen

15.6

Using ncdump on netCDF-4 files

15.7

Use ncdump and ncgen for netCDF-4

15.8

CDL Special Attributes

15.9

Using nccopy with netCDF-4 data

16

NetCDF-4 Programming

16.0

NetCDF-4 Example Programs

16.1

Backward Compatibility

16.2

How to Upgrade netCDF-3 code to netCDF-4

16.3

How to Upgrade netCDF-3 code to netCDF-4

16.4

Define versus Data Mode

16.5

Incremental Transition to netCDF-4

16.6

Recommendations for using netCDF-4

17

The Unidata UDUNITS-2 package

18

18.0

18.1

18.2

18.3

Where is CF Metadata Used?

18.4

A Brief History of CF

18.5

18.6

CF Standard Names

18.7

CF Appendices as references

18.8

Future Directions for CF

19

Chunking and Deflating Data with NetCDF-4

19.0

What is Chunking?

19.1

Choosing Chunksizes

19.2

Setting the Chunksizes in NetCDF-4

19.3

The Cache in NetCDF-4

19.4

Setting the Cache in NetCDF-4

19.5

Per-Variable Compression in NetCDF-4

19.6

Per-Variable Compression in NetCDF-4, Results

19.7

How to Use Per-Variable Compression in NetCDF-4

19.8

Contiguous Variables

20

Best Practices for Data providers

20.0

20.1

Some General Advice for Data Providers

20.2

Purpose of Conventions

20.3

20.4

Coordinate Systems

20.5

Variable Grouping

20.6

Variable Attributes

20.7

Calendar Date and Time

20.8

Packed Data Values

20.9

Missing Data Values

20.10

21

22

Introduction to NetCDF Annual Update

22.0

22.1

Online Resources

22.2

23

What NetCDF Developers Should Know About HDF5

24

NetCDF-Java and the CDM

25

Developing generic netCDF software

25.0

Issues in Writing Generic NetCDF Software

25.1

Of what use is a utility to copy netCDF files?

25.2

Lessons learned from developing nccopy

25.3

25.4

25.5

Benefits of Iterators

26

Third-party netCDF packages: NCO, NCL, CDO

26.0

NetCDF Operators (NCO)

26.1

Recent NCO Updates

26.2

NCAR Command Language (NCL)

26.3

Recent NCL Updates

26.4

Climate Data Operators (CDO)

26.5

Recent CDO Updates

27

Using netCDF - NCAR Climate Data

28

Converting ASCII to netCDF

29

Update on Remote Access to NetCDF Data

30

Use of CMake, Cdash, Ctest

31

NetCDF and Python

32

Update on CF developments

32.0

Version 1.6 of CF Conventions

32.1

Subjects of CF Discussions

33

NetCDF and Related International Standards

34

Dispatch layer and netCDF architecture

35

Parallel I/O with NetCDF

35.0

35.1

Introduction to Parallel I/O

35.2

The pNetCDF Package

35.3

Parallel I/O in NetCDF-4

35.4

Building NetCDF-4 with Parallel I/O

35.5

Using Parallel I/O in NetCDF-4

35.6

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

35.7

Parallel I/O Example

35.8

Example of Simple Parallel I/O Access

35.9

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

35.10

Using NetCDF Parallel I/O in Fortran 90

35.11

Jumpshot Graph of Independent Parallel Data Writes

35.12

Jumpshot Graph of Collective Parallel Data Writes

36

The Future of netCDF

36.0

Goals for Unidata data access infrastructure

36.1

Near-term plans for netCDF

36.2

Long-term plans for Unidata data access infrastructure

36.3

Even Longer Term Plans

36.4

36.5

37

Participating in the NetCDF Community