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The Land Data Operational Products Evaluation (LDOPE) facility, collocated with the MODIS Adaptive Processing System (MODAPS) at NASA's Goddard Space Flight Center (GSFC), is responsible for the overall coordination of the quality assessment activities in support of the Moderate Resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) Science Teams.

LDOPE develops and maintains a number of software tools designed to manipulate, visualize, and analyze MODIS and VIIRS data. A subset of LDOPE quality assessment tools is available to the user community to help parse and interpret the quality Science Dataset (SDS) layers/Variables. Written in C, they are executed either from the command-line or invoked via scripts. These tools, numbering about two dozen, are provided as command-line executables and source code. Previously, a number of platforms were supported. 

While the user manual is in the process of being updated, a shorter set of instructions is available to help users install the tools and get started. The syntax descriptions and examples provided in the user guide are still valid, and users are advised to consult them for further insight.

Downloads

All of the downloads and documentation can also be found at the LP Data User Resources LDOPE Tools Repository.

Dependencies

The new release (version 1.7) consolidates the availability of the software in Windows, Linux, and Mac OSX operating systems.

Citation

Roy, D.P., Borak, J.S., Devadiga, S., Wolfe, R.E., Zheng, M., Descloitres, J., 2002, The MODIS Land Product Quality Assessment Approach, Remote Sensing of Environment, 83, 62-76.

No distribution or re-use constraints associated with this software exists. Users and developers using or modifying this software should credit the original authorship for these tools. Please acknowledge the use of these tools, including use of significant code fragments taken from the source code, with a sentence such as “Software tools provided by the MODIS land quality assessment group (Roy et al. 2002)”.

Tool at a Glance

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LDOPE Learning Resources

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Documents

Name Description File Type Date Published File
LDOPE User's Manual PDF, 1.3 MB
L2G Lite Tool Documentation PDF, 101 KB
Installation Instructions for LDOPE Tools PDF, 1.2 MB
Comp SDS Diff Tool Documentation PDF, 99 KB
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