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Record Search Query:
General Cartographic Transformation Package (GCTP)
 Entry ID: USGS-GCTP

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Summary
The General Cartographic Transformation Package (GCTP) is a system of
software routines designed to permit the transformation of coordinate
pairs from one map projection to another. The GCTP is the standard
computer software used by the National Mapping Division for map
projection computations.

ftp://edcftp.cr.usgs.gov/pub/software/gctpc/README

There are two versions available. One is in FORTRAN and the other is in C.
Please see Related URLs for links to both.

Service Citation
Originators: USGS
Title: General Cartographic Transformation Package (GCTP)
Provider: USGS
URL: ftp://edcftp.cr.usgs.gov/pub/software/gctpc/

Service Keywords
DATA ANALYSIS AND VISUALIZATION >VISUALIZATION/IMAGE PROCESSING Parameter Definition

Science Keywords
AGRICULTURE >AGRICULTURAL AQUATIC SCIENCES Parameter Definition
AGRICULTURE >AGRICULTURAL CHEMICALS Parameter Definition
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ISO Topic Category
FARMING
ECONOMY
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Service Provider
DOI/USGS/EROS > Center for Earth Resources Observation and Science, U.S. Geological Survey, U.S. Department of the Interior Supplemental Info
Service Organization URL: http://edc.usgs.gov/

Service Provider Personnel
Name: EROS DATA CENTER
Phone: 605-594-6151
Phone: 800-252-4547
Fax: 605-594-6589
Email: custserv at usgs.gov
Contact Address:
Customer Services
U.S. Geological Survey
EROS Data Center
47914 252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Country: USA
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Personnel
TYLER B. STEVENS
Role: SERF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
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Related URL
Link: VIEW RELATED INFORMATION
Description: The General Cartographic Transformation Package (GCTP) is a system of software routines designed to permit the transformation of coordinate pairs from one map projection to another. The GCTP is the standard computer software used by the National Mapping Division for map projection computations. Because of requirements internal to the EROS Data Center, the GCTP software was converted from FORTRAN to the C programming language, and several new projections were added. During the conversion process, the software was tested on the following UNIX systems: Data General running DG/UX Release 5.4R2.01 AViiON, SUN running SunOS Release 4.1.3, and Silicon Graphics running IRIX Release 5.3 IP7. In addition, the software has also been verified against the current National Mapping Division (NMD) GCTP software. This new version, GCTPC, is being made available informally on a 'user-beware' basis. EDC assumes no responsibility for the accuracy of the routines in this package.