The OpenTopography Tool Registry provides a community populated clearinghouse of software, utilities, and tools oriented towards high-resolution topography data (e.g. collected with lidar technology) handling, processing, and analysis. Tools registered below range from source code to full-featured software applications. We welcome contributions to the registry via the Contribute a Tool page.
Appearance of a tool in the OpenTopography Tool Registry does not imply endorsement, recommendation, or support, by the NSF OpenTopography Facility and is meant simply as a service to our users. OpenTopography does not guarantee the completeness or accessibility of specific content and links contributed by users. If you have been directly involved with the development of a registered tool and are not the original contributor of the tool to the registry, please email info@opentopography.org to supply updates or modifications to its entry.
Description: LAStools are a collection of highly-efficient, batch scriptable, multi-core command line tools for processing LiDAR that is built upon LASlib (with LASzip).
lasground.exe extracts the bare-earth by classifying all ground points
lasoverlap.exe checks overlap & vertical/horizontal alignment of flight lines
lascontrol.exe quality checks elevations for a list of control points
lasclassify.exe find buildings and the trees above the ground
lasgrid.exe rasters very large LAS files into elevation or intensity grids
lasboundary.exe extracts a boundary polygon that encloses the points
lasheight.exe computes for each point its height above the ground
lasclip.exe clips points against building footprints / swath boundaries
lastile.exe tiles huge amounts of LAS points into square tiles
laszip.exe compresses the LAS files in a completely lossless manner
lasinfo.exe prints out a quick overview of the contents of a LAS FILE
lasindex.exe creates a spatial index LAX file for fast spatial queries
txt2las.exe converts LIDAR data from ASCII text to binary LAS format
las2txt.exe turns LAS into human-readable and easy-to-parse ASCII
lasmerge.exe merges several LAS files into one
lassplit.exe splits points of one (or many) LAS files into flight lines
lassort.exe sorts points by gps_time, point_source, or into spatial proximity
las2las.exe extracts last returns, clips, subsamples, translate
Description: The Geographic Calculator is THE Global Coordinate Transformation tool for any coordinate or geomatic challenge. A powerful windows solution with particular strength in survey, seismic and energy exploration, it is available in 32 or 64 bit versions. This highly accurate transformation software includes tools such as Canadian DLS (Dominion Land Survey) Land Grid tools, Seismic Survey Conversion tools, Area of Use tools for guiding users, and much more. The Geographic Calculator supports a wide range of file formats with support from the largest geodetic parameter database available anywhere. Display and reproject your DEMs into the right coordinate systems.
Description: terrainShadingMask is a free collection of terrain masks for various locations. They are given in geometrical (.obj files) and textual (.hor files) forms.
A terrain shading mask is a diagram which maps the silhouette of the surrounding terrain (hills, valleys, mountains, tree tops...) around the chosen location.
Building simulation softwares (IES VE, Trnsys 3D, Design Builder...) can use the .obj geometry files, while solar-photovoltaic-thermal software (PV*SOL, PVsyst...) can use .hor files.