Software Features

The CoastWatch Utilities let users work with earth science data created by NOAA CoastWatch / OceanWatch. Users can easily view and convert data in various formats: HDF 4, NOAA 1b, and NetCDF 4. The software has both interactive and batch processing tools. The functionality includes:

Information and Statistics - File contents, statistics computations on variables (for example min, max, mean, standard deviation), direct access to raw file and variable attributes.

Data Processing - Data format conversions, compositing, generic variable math, data sampling.

Graphics and Visualization - Interactive visualization/analysis, batch image rendering, ancillary graphics creation such as data coverage maps, grids, coastlines, land masks.

Registration and Navigation - Resampling of data from one projection to another, interactive generation of region masters, manual and automatic navigational correction, computation of solar and earth location angles.

Network - Data download and server status.

The CoastWatch Utilities are available for Windows, Linux, and Mac OS X.

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New in Version 3.6.0 b160

(Replaces version 3.5.1 (b762))

Updates:

  • CDAT now remembers the last directory that it was in when a file was opened.
  • CDAT now has increased memory defaults to help with reading certain NetCDF datasets.
  • The cwregister2 tool now has a --sensorhint option to help with processing data from sensors that cannot be detected automatically.
  • The cwrender tool now has added documentation on how wind barbs are rendered depending on the wind speed units.
  • The cwmath documentation now shows examples of how to use the new Java expression parsing syntax.
  • The cwregister2 tool now accounts for the full pixel size at the edges of source datasets. Previously there were small gaps when assembling multiple successive granules from some sensors.
  • The cwregister2 tool now has a --nogroup option to remove the leading group path name when source variables are contained in a group.

Bug fixes:

  • There was an issue reading NetCDF files with scaled variables that are missing the add offset attribute value.
  • The cwregister2 tool had issues with automatically determining the resolution of some sensor data with repeated locations such as OLCI.
  • The export of NetCDF-3 files from cwexport and CDAT wrote incorrect lat/lon data for some cylindrical projections.

Note that the Java VM has been updated to OpenJDK 14.  If you're using the Linux "no-VM" package, you'll need a VM from https://jdk.java.net/14/.

 

See the User's Guide Appendix G for a list of major updates and bug fixes.

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Screenshots

The following are screenshots from the CoastWatch Data Analysis Tool (CDAT):

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Downloads

Download the packages below. For help with installation, consult the Installation Notes section of the User's Guide. Please submit errors or bug reports to coastwatch.info@noaa.gov. A MD5 checksum for the packages listed below is provided: md5sums

 

Operating system

Architecture

Package

Windows

64-bit

Visual C++ Redistributable Package (prerequisite for Windows users)

cwutils-3_6_0_160-windows-x86_64.exe

Linux

64-bit

 

cwutils-3_6_0_160-linux-x86_64.tar.gz
cwutils-3_0_0_160-linux-x86_64-novm.tar.gz
("novm" version does not include a bundled JRE and uses the system Java)

 If you're using the Linux "no-VM" package, you'll need a VM from https://jdk.java.net/14/

 

Mac OS X

64-bit

cwutils-3_6_0_160-macosx-x86_64.dmg.gz
[file has been gzipped to avoid displaying in browser, checksum after gunzip]

** The installation packages for the CoastWatch Utilities were made possible by the generous donation of a license for the install4j multi-platform installer builder by ej-technologies.

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Documentation

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Presentations

2019

The CoastWatch Utilities, presented at the CoastWatch/OceanWatch/PolarWatch Annual Meeting, May 2019, Ann Arbor, Michigan. Topics covered: speed improvements, software development process and functionality, terrain correction. (cw_utilities_2019.pdf)

2017

The CoastWatch Utilities, presented at the CoastWatch/OceanWatch/PolarWatch Annual Meeting, July/August 2017, Santa Cruz, California. Topics covered: historical data products/distribution/software, software development process and functionality, packages available, latest beta version. (cw_utilities_2017.pdf)

CDAT Demo Annual Meeting, topics covered include: software distribution page, opening data files, enhancement & palettes, overlays, surveys, masking, full screen mode, export to PNG and PDF.

2016

The CoastWatch Utilities, presented at the CoastWatch/OceanWatch Meeting, January 2016, Miami, Florida. Topics covered: current software functionality and packages, development history, code architecture, and in-progress features. ( cw_utilities_2016.pdf)

2009

CoastWatch Data Analysis Tool: Software Design Review, presented to the CoastWatch Program Manager, central operations team, and node operations managers, January 2008. Topics covered: proposed software design including simplified user interface, data aggregation, 4D-aware interface, tile mode and animation support, and geographic feature support.

2008

The CoastWatch Data Analysis Tool: Status and Future, presented at the CoastWatch Node Managers Meeting, August 2008, Victoria, BC. Topics covered: history of CDAT and its ongoing development, new features in release 3.2.2, current user stats, future release ideas.

2007

The CoastWatch Utilities: Ten Years in the Making, presented at the CoastWatch Operations Managers Meeting, June 2007, Annapolis, Maryland. Topics covered: General information about the utilities, features and statistics for the current release (3.2.1), ideas for future releases.

Ad-hoc Processing with the CoastWatch Utilities, presented at the CoastWatch Operations Managers Meeting, June 2007, Annapolis, Maryland. Topics covered: Extracting information from data files (metadata, statistics, sampling), data processing (reprojection, math), custom code (data interfaces, file interfaces).

CoastWatch Data in Google Earth: A How-to Guide, presented at the CoastWatch Operations Managers Meeting, June 2007, Annapolis, Maryland. Topics covered: Google Earth features in comparison to CDAT, preparing data images and markup code, demonstration with AVHRR swath and GOES SST data.

2005

The CoastWatch Utilities Version 3.2: CoastWatch Data Made Easy, presented at the CoastWatch Node Managers Meeting, October 2005, Pacific Grove, California. Topics covered: Common tasks performed by the utilities, types of documentation available, details on software development (requirements and users), demonstration (not included).

2003

The CoastWatch Utilities Version 3, presented at the CoastWatch Node Managers Meeting, October 2003, Glen Arbor, Michigan. Topics covered: Software requirements (website, research, product development), implementation details (survey of all utilities), future work to be done.

The CoastWatch Data Analysis Tool, presented at the CoastWatch Node Managers Meeting, October 2003, Glen Arbor, Michigan. Topics covered: Target user groups, functionality (data import/export, display, annotation, statistics, preferences), demonstration (not included), future work to be done.

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