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Representando linhas de ônibus no Leaflet
Hoje vamos falar sobre o plugin Polylines Offset que adiciona a habilidade de você desenhar uma linha com um offset (deslocamento) de pixel relativo, sem modificar seus LatLongs reais. O valor do dess…
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Criando uma timeline com o Leaflet
Se você está procurando uma opção para gerar uma timeline (linha do tempo) no seu mapa, você pode utilizar o Time-Slider do Leaflet que permite que você adicione e remova dinamicamente marcadores em u…
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Flow maps in QGIS – no plugins needed!
If you’ve been following my posts, you’ll no doubt have seen quite a few flow maps on this blog. This tutorial brings together many different elements to show you exactly how to create a flow map from…
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Introdução ao Leaflet – Calculando distância
Hoje vamos usar o Turf.js para calcular a distância entre dois pontos ao longo da trilha. O Turf.js é classificado como “Análise geoespacial avançada para navegadores e Node.js.” A distância calculada…
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MapStore Release 2019.01.00: Timeline, Styler and more
Dear Reader, We are pleased to announce the release 2019.01.00 of MapStore, our flagship Open Source WebGIS product. The full list of changes for this release can be found here, but the most interest…
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Fast Geometry Distance in JTS
The second-most important criteria for a spatial algorithm is that it be fast. (The most important is that it's correct!) Many spatial algorithms have a simple implementation available, but wit…
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Leaflet Day 9 - Calculating Distance with Turf.js
Today we’re going to use Turf.js to calculate the distance between any two points along the trail. Turf.js is billed as providing “Advanced geospatial analysis for browsers and Node.js.” The distance …
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OpenStreetMap Ireland 2018 Visualized
2018 was a very productive year for OpenStreetMap in Ireland. Around 70k nodes added, 60k ways added, and 160k polygons added. Finally a company was formed to facilitate becoming a fully fledged…
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OSGeoLive in 4 minutes
Here is our OSGeoLive lightning talk, stripped back to 4 minutes, and presented at the FOSS4G-Oceania conference. OSGeoLive talk starts at 8mins 15secs.The shortened slide deck and notes are here.…
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SRS barn raising: 6th report
This is the sixth progress report of the GDAL SRS barn effort. The pace of changes has not yet slow down, with still a significant part of the work being in PROJ, and an initial integration in GDAL.T…
