Cartography

Perhaps we never dream to see one day a historic map, mounted on Google, such that we could know how it was 300 years ago the land where today we stand. The web maps technology has allowed it. And indeed, in what way. An example of this is the London nostalgic map shown below, where they have not only made ...

Until now it has been common to input UTM and geographic coordinates on Google Maps. But usually that supports keeping the datum is WGS84 Google. But: What if we want to see in Google Maps, a coordinate of Colombia in MAGNA-SIRGAS, WGS72 or PSAD69? What if we want to see a coordinate of Spain in ETRF89, Madrid 1870 or even ...

This Excel template is initially made to convert geographic coordinates in decimal to degrees, minutes and seconds. Just the opposite of the template that we had done before, as seen in this example: In addition: Concatenate them into a string Turn them to UTM coordinates, with an option to choose a Datum Concatenates point command to create points in AutoCAD ...

Stitchmaps was one of the best applications that were made to create orthophotos from Google Earth captured mosaics; I spoke about how it works long ago. Those like me, who did this process before manually, downloading Google screenshots and then linking them with PhotoShop or Bentley Descartes, know that Stitchmaps does much more than that. Each capture requires a special ...

Google Earth beyond being a tool for general entertainment has also become a visual support for mapping, both to show results as to review if work done is consistent; it also serves as a teaching tool for geography or geodesy classes. In this case I’m going to get assisted by Manifold GIS to build the quadrants and by Google Earth ...

Some time ago I had seen on the Google Earth’s official blog, but after that Opaco has reminded us, I took a few minutes to see it working. I mean the old maps from the Rumsey collection made on Google Maps or Google Earth. This example shows a map of the Iberian Peninsula in 1710, Spain divided by Castilla and ...

This week has been published in Directions Magazine an interesting interview with Ernesto Ballesteros from Tuent company, which in just 6 questions bring valuable content to the geospatial community. Tuent is an innovative service that among other things, offers the possibility of territorial dashboard mount. It does not occupy a lot turn for them to place online maps, integrated to ...

This has been one of the interesting topics covered in the March issue of GISMagazine, known in our environment as Geoinformatics. This is a geopolitical map, reflecting criteria that turn constraints for the political, social and economic stability, updated in its 17th Edition for 2010. The result is a work of Aon Risk Services, an associate company of Oxford Analytica, ...

Some time ago I’ve been ask for this, and in view the friend seems a little rushed and today is a day to celebrate many things, here I leave one tool that allows you to move from degrees/minutes/seconds to decimals. Why a table It is common, finding coordinates that are in degrees- minutes- seconds format, for example: 75° 25’ 23.72” ...

So a little distracting, this week 20minutos.es has published an article based on projections’ theme in a way a sixth grade’s teacher would explain it when talking about world maps. It’s worth taking a look at the comments, a pity – ironic- there are too many, but here I leave a few of them: The way a journalist expresses about ...

It happens to us as maps’ fans that we buy a magazine at the supermarket just for bringing down a large map or atlas to be added to the collection we already have. Encyclopedias have done their best to display interactive maps in Flash or developments that simulate the operation of a geographic information system, but in vector format we ...

As well as GRASS complements Quantum GIS, SEXTANTE does the same with gvSIG, keeping the specialty. These are the best efforts of collaboration between open source alternatives in the geospatial environment, searching to prevent unnecessary duplication. The gvSIG effort of maintaining vector handling with many CAD capabilities is complemented with everything that has been built in SEXTANTE after its abandon ...

Plex.mark! is a development made on Google Earth ActiveX, that facilitates the operation directly in UTM, not just for getting coordinates but also to enter them. It’s free. Install Plex.mark! It must be downloaded from Plescape, the Greek manufacturer company of Plex.Earth tools; after it’s installed, it creates the shortcut on the desktop. To run it, Google Earth must be ...

We often face the problem of working within the limits of the UTM zone, having a lot of problems (Spanish Idiom: “ver a palitos” to have a problem of difficult solving) because the coordinates do not work there. The reason of the problem Some time ago I explained how the UTM, coordinates operate, here I will only focus on the ...

Since 2005 the Congress’ Library and UNESCO had been promoting the idea of a library online; finally in April 2009 this idea was officially released. It joins a host of reference sources (such as European), with the variant, that this is supported by libraries in different countries and with an economic contribution that ensures a secure long-term sustainability. Initially, the ...

3D World Map comes to remind us of those spheres that were used at school, although its capacity goes beyond that. It is a balloon that contains much more data that could fit in the globe and atlas; it also includes a screen saver movie tool that can run mp3 music as background. 3D World Map Capabilities Contains more than ...

Knowing (in Latin America is known as Omen) is a film of Nicolas Cage that I recommend to this blog visitors who are passionate about the lat / long coordinates. I don’t expect to tell you the story because you lose interest, but basically it is about a fucking sheet with numbers a girl wrote in the sixties and are ...

TRANSLATION NOTES: Please read some comments at the end of this post. Let’s suppose I want to show in a georeferenced way an image available on a website. I had already spoken of this before, but in this case I would like to project a map that is not on my hard drive but online. This is the case of ...