Announcing the WhiteboxTools library

WhiteboxTools is an advanced geospatial data analysis engine. The library has been developed using the Rust programming language

Whitebox Geospatial Analysis Tools

Things have been moving forward with Whitebox GAT at a fast pace recently. I have had numerous request over the years from people who want to use Whitebox GAT tools from outside of the user interface (UI). While all of Whitebox’s tools can be called from scripts, historically, there has been no way to call a Whitebox tool from outside the UI. Quite some time ago, I committed myself to finding a solution for this problem but efforts have been delayed by a coincident urgent development need. Increasingly the decision to develop Whitebox GAT in Java has been problematic as systems provide ever more marginal support for the Java platform. The solution to these two issues (i.e. external automation of Whitebox tools and the need to decrease reliance on Java) has a convenient synergistic overlap. Today I am publicly announcing the WhiteboxTools library. WhiteboxTools is a sub-project of the

Ver o post original 313 mais palavras

Orfeo Toolbox – Satellite Remote Sensing for QGIS

Orfeo Toolbox – Satellite Remote Sensing for QGIS



Orfeo Toolbox 4.0 (OTB) is now available for QGIS on Ubuntu 13.10 and 14.04 via the UbuntuGIS Unstable repository (it was previously available for earlier versions of Ubuntu and separately MS Windows via OSGeo4W). OTB, which can be accessed via the Processing Toolbox, provides QGIS with advanced satellite remote sensing capabilities, the sophistication of which maybe best appreciated upon thumbing OTB’s rather daunting 732 page manual.

OTB is a library of image processing algorithms based on the medical image processing library ITK v4, adapted for analysis of high resolution satellite imagery. Its algorithms are tuned to cope with huge images, that normally require supercomputer facilities, by using streaming and multithreaded processing.

The OTB project was initiated the French Space Agency (CNES) in 2006 with the objective to provide a suit of opensource tools for the analysis of images produced by the Orfeo constellation of…

Ver o post original 178 mais palavras

MB-System: Conheça o software livre para batimetria

MB-System: Conheça o software livre para batimetria

MB-System: Conheça o software livre para batimetria

Gismo Brasil

O MB-System é um pacote de software de código aberto para o processamento e exibição de dados de imagens de batimetria e retroespelhamento derivados de multicanais, interferometria e sonares de varredura lateral. O código fonte do MB-System está disponível gratuitamente via ftp.

O MB-System foi originalmente desenvolvido no Lamont-Doherty Earth Observatory da Universidade de Columbia (L-DEO) e agora é um esforço colaborativo entre o Instituto de Pesquisa do Aquário da Baía de Monterey (MBARI) da Universidade de New Hampshire e o Centro de Ciên­cias Am­bi­en­tais Mar­in­has (MARUM) da Universidade de Bremen. A Fundação Nacional de Ciência dos EUA apoiado o desenvolvimento do MB-System desde 1993. A Fundação Packard vem fornecendo o suporte primário para o programa através do MBARI desde 1998.

O time de desenvolvimento do software conta com a presença do Geólogo Marinho brasileiro, Christian dos Santos Ferreira.

A versão atual e mais recente (até a data de…

Ver o post original 217 mais palavras

An Introduction to PostGIS (with a use case in QGIS)

“Uma introdução ao PostGIS (com um caso de uso no QGIS)”

Rossi’s Home of Ramblings

This post veers off my usual takes on Tableau and focuses on a little more technical topic. Today I would like to introduce you to PostGIS — an open source, freely available spatial database extender for PostgreSQL.

Why should I care about PostGIS?

For those of you that love geographic data (like me) and SQL (like me) this brings both of these worlds together. It gives you a way to store your shapefile data without storing all those pesky shapefiles on your hard drive.

The other powerful feature is all the spatial SQL functions it comes packaged with. For example, lets say you have a table of point locations with their coordinates, but you want to find which county they fall into. You could launch QGIS (or ArcMap) and run a spatial join, but if you are doing this on a regular basis, it could get pretty annoying.

Instead, you…

Ver o post original 626 mais palavras