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Posts Tagged ‘colombia’

LATAM tour on Smart Cities

2018/04/24

Just come back from Chile, Peru and Colombia, where my employer held some conferences on Smart Cities. I had the chance to talk in both venues: GIS expertise, geoprocessing, spatial analysis, etc. This is all about GIS, as always lately ūüėČ

Our Smart City conferences and workshops held this month have been a great success! Thank you to all who participated. Ekodes Mintek AChEE

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Change detection – Detecci√≥n de cambios en pol√≠gonos

2015/10/22

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THE IDEA: DEMONSTRATING HOW DYNAMIC A CITY IS, THUS HOW IMPORTANT IS HAVING AN UPDATED DATASET
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THE FACTS:¬†THE CITY OF BOGOT√Ā IN COLOMBIA¬†2012-2014

Overall growth rate: -0.12% ONLY HAVING INTO ACCOUNT THE DIFFERENCE OF BUILDINGS CAPTURED BETWEEN 2012 AND 2014 (We can do this because we have used the same data capture model in both years)

(De acuerdo al censo catastral, para 2015 la ciudad incorporó 51.531 predios nuevos urbanos. En total, hay 2’402.581 predios en la ciudad, de esos, 266,9 millones de metros cuadrados son de área totalmente edificada. Source: http://www.eltiempo.com/bogota/crecimiento-bogota-/15394797)

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THE PROCEDURE: Centroids of buildings; Spatial join showing presence-absence, considering a 10m accuracy threshold, meaning if the centroid has not moved more than 10m, its the same building. If the centroid in 2012 is not in 2014, its considered as demolished. If a new centroid appears its considered new building.

DENSITY MAPS+3D buildings
Help to quickly focus on the highlights
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Coverage map video over Bogot√°, Colombia

2013/06/14

A few months ago i prepared some scenarios over the city of Bogot√°. Hope you guys like it.