After living in France for four years i have to tell i am always aware of Meteo information on TV (well, i live in Brittany, i guess this makes sense!). It was the same in Spain or anywhere else in the world where i had lived and the reason why is i have always lovedContinue reading “Comparing France Meteo and Spain Meteo from the visualization point of view”
Category Archives: análisis
Advanced Thematic Cartography IGN Spain
A few lines for leting you know i passed this course last year 2013 in Instituto Geográfico of Spain (IGN). Spatial analysis, Spatial stats, proper simbolization, data mining and geovisualization. A very interesting 40h online course that helps me on a daily basis to be able to show geodata in a more professional way. BecauseContinue reading “Advanced Thematic Cartography IGN Spain”
HTML High resolution DTM visualization using QGIS
This QGIS Plugin, Qgis2threejs, exports terrain data, map canvas image and vector data to your web browser!! All you have to do is opening the DTM in QGIS (2.4.0 Chugiak), go to plugins library and install Qgis2threejs. Once its installed you will see this icon on screen and you will need to clic on it. ThenContinue reading “HTML High resolution DTM visualization using QGIS”
DTM from SRTM? Let’s compare sources using RMSE (Root Mean Square Error) and a gaussian kernell density map
I guess we all can make a DTM out of many sources but SRTM is one of the most common ones, right?. Then let’s learn from this very simple approach how close we are from the SRTM raw data. Selecting a not very big representative area to be able to handle it, exporting raster to polygon (fromContinue reading “DTM from SRTM? Let’s compare sources using RMSE (Root Mean Square Error) and a gaussian kernell density map”
La geografía española (con minúsculas)
Aquí la ‘convesación’ via twitter con el presentador de TVE Jacob Petrus. Me quejé de que se mencionara dentro de una frase, como tantas veces hemos oído, en radio y televisión, la expresión ‘La geografía española…’ refiriéndose a España en general. Lo que me indignó fue que Jacob Petrus es Geógrafo además de presentador generalistaContinue reading “La geografía española (con minúsculas)”
‘Reality Checks’, also called ‘Ground Truth Tests’
Comparing all kind of Geodata (i.e 3D Buildings, DTM, DHM, DSM, Land Use, vectors,…) to background sources as Google Earth/ Bing, available sources from the country we are working on or WMS available sources, etc. Figuring out if the data requested and we want to deliver is consistent enough compared to the so called “Truth”. SomeContinue reading “‘Reality Checks’, also called ‘Ground Truth Tests’”
RSME comparing LIDAR data with a third party’s 3D dataset
I would like to share with you an easy analysis i have been working in the last days. I had a vector dataset of buildings and i knew how high they were (there was a field called ‘AGL’ or Above Ground Level) and a LIDAR 2m resolution dataset over the city of London. My aimContinue reading “RSME comparing LIDAR data with a third party’s 3D dataset”
Finally got my QCQA European certification
Hi guys, Just wanted to share with you I finally got my European certification in QCQA. I struggled for two years to find some time for studying (It’s complicated when you have a full time job and you’re a father) but I finally made it.
Analyse du Localisation des équipements publics relevant du thème ‘Sports, loisirs’ de Nantes Métropole
La première chose a dire, comme toujours est: Désolé pour mon français, je fais mon mieux:-) Aujourd’hui je voudrais faire l’analyse sur la localisation des équipements publics de la thématique ‘Sports, loisirs’ de Nantes Métropole. http://data.paysdelaloire.fr/donnees/detail/localisation-des-equipements-publics-relevant-du-theme-sports-loisirs-de-nantes-metropole/ Les données donnent les coordonnées et la catégorie (centre sportif, circuit de plein air, stade, gymnase, espace sportif de proximité,Continue reading “Analyse du Localisation des équipements publics relevant du thème ‘Sports, loisirs’ de Nantes Métropole”
PISA report SPAIN 2012 by Comunidades Autónomas Trends North-South and West-East
I wanted to take advantage of the latest ‘advanced course on Statistical Analysis’ followed in the spanish IGN and show you how North-South and West-East trends impact on this report. As you can see, the higher the values, the most likely to be in the North and the East of the country. This doesn’t meanContinue reading “PISA report SPAIN 2012 by Comunidades Autónomas Trends North-South and West-East”
Geovisualization.net 