Now that we have completed a first example, let’s continue with a real-world one. Its important working on a Data Model to define what we understand as a Risk and how important this is. Meaning. High voltage power lines are an actual risk but the closer we are, i guess the bigger the risk is, meaning i.e 3 if we are within 50m and 1 if we are 150m away… It’s only a guess.
Tag Archives: GIS
Risk exposure. First steps
Knowing how to geoprocess features is key if what we want is assesing risk exposure. What’s a risk? Which are the risks? Where are the risks? How important a risk is?
Jugando con CartoDB
Hace ya mucho tiempo que he oído hablar de CartoDB y que vengo practicando en su página web a visualizar bases de datos sencillas. Crea una cuenta Incorpora tus datos o tómalos de la galería Selecciona en modo datos la columna que quieres simbolizar/visualizar Conviértela en NUMBER si estuviera en STRING Selecciona en modo mapaContinue reading “Jugando con CartoDB”
Change detection – Detección de cambios en polígonos
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.
La geográfica cabecera de ‘Up in the air’ con George Clooney
Para alguien que maneja mapas a diario es una sorpresa interesante cruzarse con esta cabecera de la película de Jason Reirman protagonizada por George Clooney ‘Up in the air’. Nubes, campos de cultivo, ciudades en 2D, 3D. Qué bien he elegido mi profesión:-) Para alguien que viaja mucho, salvando las distancias, este vídeo, también delContinue reading “La geográfica cabecera de ‘Up in the air’ con George Clooney”
Tipologías usuarios Madrid Río. Estadísticas y tendencias interesantes
Para la multitud de personas a las que como a mí, les ha sorprendido esta infrastructura en frente de sus casas hay posibilidad de encontrarse en el mismo metro cuadrado a alguien corriendo, alguien andando, una pareja con un carrito de niños, unos amigos en patines, alguna persona en bici… unos más rápido y unos más lento, todos hemos de convivir en un trazado de unos 7,5km de largo y no más unos metros de ancho, con lo que unas mínimas normas de circulación se imponen.
Freelancing is good?. Well, kind of!
why is good being a freelance?
Taxing the sun?. Yes, in Spain this seems to be possible.
Absolutely ashamed by my government’s insane policies on this regards, Spain is now (…) attempting to scale back the use of solar panels – the use of which they have encouraged and subsidized over the last decade – by imposing a tax on those who use the panels. The intention is clearly to scare taxpayersContinue reading “Taxing the sun?. Yes, in Spain this seems to be possible.”
DTM validation using Google Earth (and RMSE extraction)
Hi guys, Surfing the internet is great when you need to figure out something. I needed to validate some DTM from unknown sources against an also unknown source (but at least a kind of reliable one, Google Earth). All we need is Google Earth TCX converter ARcGIS Excel This is the procedure i have followed:Continue reading “DTM validation using Google Earth (and RMSE extraction)”
Pearson correlation and GIS
Do these two variables have a correlation?. To answer this important question first of all we have to know that only if it’s a linear relationship and there are no outliers we can take advantage of Mr Pearson’s correlation statiscal tool. If i love chocolate, does this mean i have tendency of being chuby? orContinue reading “Pearson correlation and GIS”
Geovisualization.net 