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.

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. Link: GET SERVICE > GET SOFTWARE PACKAGE Description: The C version of GCTP is available here. Link: GET RELATED SERVICE METADATA (SERF) Description: The MODIS Level-3 Land products are generated by the MODIS Adaptive Processing System (MODAPS), located at the NASA Goddard Space Flight Center, as gridded output in the Integerized Sinusoidal (ISIN) projection. These data products are then sent to the EDC DAAC for archive and distribution. The ISIN projection is unique to the MODIS land products, analogous to the Sinusoidal projection except that the ISIN projection is centered about 0° longitude and special coefficients are used to flatten the ellipsoid. The ISIN projection was devised for the Level-3+ products because it employs a tessellation scheme, efficient organization, and hierarchical management of the multi-resolution data acquired by the MODIS sensor. Link: GET RELATED SERVICE METADATA (SERF) Description: The Geographic Resources Analysis Support System (GRASS) is a Geographic Information System (GIS) used for data management, image processing, graphics production, spatial modelling, and visualization of many types of data. It is free software released under GNU General Public License (GPL). Originally written by the U.S. Army Construction Engineering Research Laboratories (USA-CERL, 1982-1995), a branch of the US Army Corp of Engineers, as a tool for land management and environmental planning by the military, GRASS has evolved into a powerful utility with a wide range of applications in many different areas of scientific research. GRASS is currently used in academic and commercial settings around the world, as well as many governmental agencies including NASA, NOAA, USDA, the National Park Service, the U.S. Census Bureau, USGS, and many environmental consulting companies.

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

Science Keywords

AGRICULTURE >AGRICULTURAL AQUATIC SCIENCES AGRICULTURE >AGRICULTURAL CHEMICALS AGRICULTURE >AGRICULTURAL ENGINEERING AGRICULTURE >AGRICULTURAL PLANT SCIENCE AGRICULTURE >ANIMAL COMMODITIES AGRICULTURE >ANIMAL SCIENCE AGRICULTURE >FEED PRODUCTS AGRICULTURE >FOOD SCIENCE AGRICULTURE >FOREST SCIENCE AGRICULTURE >PLANT COMMODITIES AGRICULTURE >SOILS ATMOSPHERE >AEROSOLS ATMOSPHERE >AIR QUALITY ATMOSPHERE >ALTITUDE ATMOSPHERE >ATMOSPHERIC CHEMISTRY ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS ATMOSPHERE >ATMOSPHERIC CHEMISTRY >HALOCARBONS AND HALOGENS ATMOSPHERE >ATMOSPHERIC CHEMISTRY >HYDROGEN COMPOUNDS ATMOSPHERE >ATMOSPHERIC CHEMISTRY >NITROGEN COMPOUNDS ATMOSPHERE >ATMOSPHERIC CHEMISTRY >OXYGEN COMPOUNDS ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS ATMOSPHERE >ATMOSPHERIC ELECTRICITY ATMOSPHERE >ATMOSPHERIC PHENOMENA ATMOSPHERE >ATMOSPHERIC PRESSURE ATMOSPHERE >ATMOSPHERIC RADIATION ATMOSPHERE >ATMOSPHERIC TEMPERATURE ATMOSPHERE >ATMOSPHERIC WATER VAPOR ATMOSPHERE >ATMOSPHERIC WINDS ATMOSPHERE >CLOUDS ATMOSPHERE >PRECIPITATION BIOSPHERE >AQUATIC ECOSYSTEMS BIOSPHERE >ECOLOGICAL DYNAMICS BIOLOGICAL CLASSIFICATION >PLANTS BIOSPHERE >TERRESTRIAL ECOSYSTEMS BIOSPHERE >VEGETATION BIOSPHERE >TERRESTRIAL ECOSYSTEMS >WETLANDS CLIMATE INDICATORS >AIR TEMPERATURE INDICES CLIMATE INDICATORS >HUMIDITY INDICES CLIMATE INDICATORS >OCEAN/SST INDICES CLIMATE INDICATORS >DROUGHT/PRECIPITATION INDICES CLIMATE INDICATORS >TELECONNECTIONS CRYOSPHERE >FROZEN GROUND CRYOSPHERE >GLACIERS/ICE SHEETS CRYOSPHERE >SEA ICE CRYOSPHERE >SNOW/ICE HUMAN DIMENSIONS >ATTITUDES,PREFERENCES,BEHAVIOR HUMAN DIMENSIONS >BOUNDARIES HUMAN DIMENSIONS >ECONOMIC RESOURCES HUMAN DIMENSIONS >ENVIRONMENTAL IMPACTS HUMAN DIMENSIONS >HABITAT CONVERSION/FRAGMENTATION HUMAN DIMENSIONS >HUMAN HEALTH HUMAN DIMENSIONS >INFRASTRUCTURE HUMAN DIMENSIONS >LAND USE/LAND COVER HUMAN DIMENSIONS >NATURAL HAZARDS HUMAN DIMENSIONS >POPULATION TERRESTRIAL HYDROSPHERE >GLACIERS/ICE SHEETS TERRESTRIAL HYDROSPHERE >GROUND WATER TERRESTRIAL HYDROSPHERE >SNOW/ICE TERRESTRIAL HYDROSPHERE >SURFACE WATER TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY LAND SURFACE >EROSION/SEDIMENTATION LAND SURFACE >FROZEN GROUND LAND SURFACE >GEOMORPHOLOGY LAND SURFACE >LAND TEMPERATURE LAND SURFACE >LAND USE/LAND COVER LAND SURFACE >LANDSCAPE LAND SURFACE >SOILS LAND SURFACE >SURFACE RADIATIVE PROPERTIES LAND SURFACE >TOPOGRAPHY OCEANS >AQUATIC SCIENCES OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY OCEANS >COASTAL PROCESSES OCEANS >MARINE ENVIRONMENT MONITORING OCEANS >MARINE GEOPHYSICS OCEANS >MARINE SEDIMENTS OCEANS >MARINE VOLCANISM OCEANS >OCEAN ACOUSTICS OCEANS >OCEAN CHEMISTRY OCEANS >OCEAN CIRCULATION OCEANS >OCEAN HEAT BUDGET OCEANS >OCEAN OPTICS OCEANS >OCEAN PRESSURE OCEANS >OCEAN TEMPERATURE OCEANS >OCEAN WAVES OCEANS >OCEAN WINDS OCEANS >SALINITY/DENSITY OCEANS >SEA ICE OCEANS >SEA SURFACE TOPOGRAPHY OCEANS >TIDES OCEANS >WATER QUALITY PALEOCLIMATE >ICE CORE RECORDS PALEOCLIMATE >LAND RECORDS PALEOCLIMATE >OCEAN/LAKE RECORDS SOLID EARTH >GEOCHEMISTRY SOLID EARTH >GEODETICS/GRAVITY SOLID EARTH >GEOMAGNETISM SOLID EARTH >GEOMORPHOLOGY SOLID EARTH >GEOTHERMAL SOLID EARTH >NATURAL RESOURCES SOLID EARTH >ROCKS/MINERALS SOLID EARTH >SEISMOLOGY SOLID EARTH >TECTONICS SOLID EARTH >VOLCANOES SPECTRAL/ENGINEERING >GAMMA RAY SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS SPECTRAL/ENGINEERING >MICROWAVE SPECTRAL/ENGINEERING >PLATFORM CHARACTERISTICS SPECTRAL/ENGINEERING >RADAR SPECTRAL/ENGINEERING >RADIO WAVE SPECTRAL/ENGINEERING >SENSOR CHARACTERISTICS SPECTRAL/ENGINEERING >ULTRAVIOLET WAVELENGTHS SPECTRAL/ENGINEERING >VISIBLE WAVELENGTHS SPECTRAL/ENGINEERING >X-RAY SUN-EARTH INTERACTIONS >SOLAR ACTIVITY SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE FLUX BIOSPHERE >AQUATIC ECOSYSTEMS >WETLANDS

ISO Topic Category

FARMING ECONOMY ENVIRONMENT GEOSCIENTIFIC INFORMATION CLIMATOLOGY/METEOROLOGY/ATMOSPHERE BIOTA INLAND WATERS OCEANS SOCIETY BOUNDARIES HEALTH UTILITIES/COMMUNICATIONS TRANSPORTATION IMAGERY/BASE MAPS/EARTH COVER PLANNING CADASTRE ELEVATION STRUCTURE

Service Provider

DOI/USGS/EROS > Center for Earth Resources Observation and Science, U.S. Geological Survey, U.S. Department of the Interior Service Organization URL: http://eros.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 DOI/USGS/GEOG/CAS > Cartographic Applications Software, Geography Division, U.S. Geological Survey, U.S. Department of the Interior Service Organization URL: http://geography.usgs.gov/www/html/cartsoft.html Service Provider Personnel Name: MIKE LINCK Phone: (703) 648-4667 Fax: (703) 648-4165 Email: mlinck at usgs.gov Contact Address: U.S. Geological Survey Geography Division 560 National Center City: Reston Province or State: VA Postal Code: 20192 Country: USA

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 MIKE LINCK Role: TECHNICAL CONTACT Phone: (703) 648-4667 Fax: (703) 648-4165 Email: mlinck at usgs.gov Contact Address: U.S. Geological Survey Geography Division 560 National Center City: Reston Province or State: VA Postal Code: 20192 Country: USA

Creation and Review Dates

SERF Creation Date: 2005-05-06 SERF Last Revision Date: 2007-08-20

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