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Posts Tagged ‘geography’

Visualizing Tweets!

2016/03/04

How about a quick visualization of tweets in CartoDB?

Hey guys, the way we used to visualize is changing on a  daily basis so it’s time to catch up!!!. Let’s add a timestamp and play!!

tweets-visualization-cartoDB-20160304

We will take a look at this dataset in depth shortly so be aware of our schedule!

Regards,

Alberto CONCEJAL
MSc GIS and remote sensing

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Cheers! Geovisualization.net has just been released!

2016/02/03

La geográfica cabecera de ‘Up in the air’ con George Clooney

2015/08/24

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 del mismo fil ‘Up in the air’ es un simpático recuerdo de lo que es un viaje pasando por uno y mil auropuertos, arcos voltaicos, empaquetando, desempaquetando…

Espero que os guste!

Alberto

(Fuente: Jose Ignacio Sánchez de Nosolosig)

Visualization will endure these difficult years of CRISIS!!

2013/10/10

I have already worked as a building cleaner, data capture operator, copywriter, photographer, graphic designer, video editor, technical salesman… and seriously, I think i’m too old to make a living in something else now…

GIS has been working for me the last 8 years and i want to stay like this!!!:-) I have just read in GISLOUNGE that Visualization is among a list of a few things which will endure these difficult years of CRISIS.

http://www.gislounge.com/opinion-future-gis/

(…) Visualization
Look at the Foursquare time machine for example. The classic cartography is being challenged to new methods.
The market wants more beautifully visualized maps. (…)

And if the market needs more beautifully visualized maps, Alberto will be there!!!!.

london_cooldata

Cheers!!!!

Alberto
MSc GIS
albertoconcejal (at) gmail.com

County of Scotland (North Carolina, US) GIS Cartography

2012/06/20

One more video  i recorded long ago on geoprocessing Cartography. Landuse, DTM, etc.
Hope you like it.

Visualizing LAS LIDAR data with sketch-up

2010/07/02

While trying to figure out the way to get a 3D model from raw Lidar data, I first opened my LAS file in Global Mapper, exported it to DXF, imported then into Sketch-up and after recording a few scenes, I saved the animation… this is it!.

Alberto

Using Excel to calculate the RMSE for LiDAR vertical ground control points

2010/06/30

(source: http://dominoc925.blogspot.com/)

The height accuracy of the collected LiDAR data can be verified by comparing with independently surveyed ground control points on hard, flat, open surfaces. It is essentially just calculating the height differences for all the control points and then determining the height root mean squared error (RMSE) or differences. Most LiDAR processing software have the reporting function built-in. However, plain Microsoft Excel can also do the job (except for extracting the elevation from the LiDAR data).

Assuming that you are able to calculate the height differences for all the control points and place in a spreadsheet as shown in the figure below. I have a column of delta Z values in column A.

Then to calculate the RMS value for the elevation differences, I can do the following.

  1. In a cell, type in the formula:= SQRT(SUMSQ(A2:A18)/COUNTA(A2:A18))where A2:A18 are the values from cell A2 to A18 in the spreadsheet. Simply replace these with the actual locations on your spreadsheet.
  2. Press RETURN.
    The RMSE value is calculated.

(source: http://dominoc925.blogspot.com/)

Data acquisition: How do I know if this river is been well acquired?

2010/06/14

I’ve already entered my river but my imagery was in 2D so… was it well acquired?…  First of all, I import my shape (shp) file into Global Mapper (what a great sofware!) and export my vector file as a KML.

Import my river.kml file into my brand new Google Earth 5.2 or just double-click it in his location… easyest impossible!.

Select it and use ‘show elevation profile’,  a very useful new tool for these purposes…

And that’s it, constant altitude, almost perfect!.

Hope you have considered it interesting:-)

Alberto

GIS+Architectural scenaries. Awesome!

2010/06/12

Even from scratch or from dgn/dxf vectorial format’s contour lines you create your own scenario.

Then import your model previously created using Sketch-up (this time i used google’s 3d warehouse, thank you Dilbert).

Stamp your house using sketch-up sandbox tools.

Then fur your scenario as if it was grass…

A little of photoshop like clouds and thats it!

Alberto Concejal
geographer, 3d designer & 3D GIS technician
albertoconcejal [at] gmail.com

Interesting: sketchup, more than a quick visualization tool.

2010/05/26

I’ve extracted this information from the very interesting ‘Sketchup blog’ from Google… They talk about something I have always thought it could happen… Sketchup is not only a rapid visualization tool but a CAD like software with visuallization capabilities which in addition is integrated within a world wide used 3D scenary, perfect for Geovisualization and why not, GIS. Let’s  take a look at what they say…

Collard Maxwell Architects is a Sydney-based architecture firm with a philosophy that successful architecture is the synthesis of art, technology and building economics resulting in memorable, economic and sustainable building solutions.

Alberto Sunderland, a Project Leader for CM+A, says that initially SketchUp Pro was used as a quick visualization tool of early concept work.

The models were never very detailed and it was a tool used primarily within the office. It was used as a quick way of understanding massing and scale to determine if the design was heading the right direction.

As our skill grew we began to use SketchUp to generate models we could show our clients to help them understand the projects and to provide a quick and effective way of trying out changes before updating all our cad documentation.

Over a period of time we began to use SketchUp Pro for tender presentations. Although we originally took the images and “dumped them” into Photoshop to create the presentation posters, we eventually discovered the possibilities of the SketchUp Pro’s LayOut tool. Combining LayOut with our SketchUp work has made the creation of simple, effective and clear presentations much quicker than our previous method utilizing Photoshop. We are very impressed.

We anticipate that SketchUp will become the primary visualisation tool in this office and, together with LayOut, it will be used to create most, if not all our presentation slides. The speed and ease of use of the software is amazing, and we are coming to appreciate the importance it may have within our workflow.

thanks to Chris Dizon, SketchUp Pro Team

hope you have consider it interesting.

Regards,

Alberto Concejal
BA Geography
MSc GIS and Remote Sensing
GIS Technician
albertoconcejal -at -gmail.com