Spatial Data Infrastructures for Guatemala

Guatemala ides The Prototype of Spatial Data Infrastructure for Guatemala, which is being prepared by the Secretary General of Planning and Programming of the SEGEPLAN Presidency, is interesting.

We had seen in the presentation video of Moisés Poyatos and Walter Girón Of SITIMI in the 4tas. gvSIG days; at the end of the presentation, they mentioned that IDEs were a hot topic in Guatemala but to date they had not shown anything publicly. Now they have done it through the gvSIG mailing list and I think it is worth recognizing that it is a great job that is just beginning, although Jean-Roch Lebeau had told me a bit about it.

Well, SEGEPLAN pretends within the environment of the new Law of Territorial Ordering To promote the development of Spatial Data Infrastructures in Guatemala, interesting that they are seriously considering Free Software. This Prototype Uses:

  • Postgre (Geographic Module POSTGIS)
  • gvSIG for the generation of spatial services scripts
  • Apache for Web server
  • Mapserver as a Maps server
  • Mapbender as a thin client.
  • And the GEONETWORK Metadata Module Publication is in process.

This is extremely valuable and a good reference for the Central American region where other apps have Short, not only for what implies the investment in proprietary software but for the taste for the OGC standards. To see how the system works:

Enter in the system

He has not yet been baptized with a name that gives him a corporate identity, we assume he will be part of Sinit; because the prototype level is the link address that you now have, http://ide.segeplan.gob.gt/ , There is entered the user and password "ide" and thus has a display of graphical information.

Guatemala ides

Download layers

Here among the data served you can choose emboss, high resolution orthophotos and departments. Once the layer is chosen you can choose the available layers and below are some tabs for legends, print and search.

Guatemala ides

In the upper icons there are basic functionalities of approach and deployment but there are also other very interesting as the loading of layers wms:Guatemala ides

In the order would be these:

Deployment:

  • Getting closer
  • Walk away
  • Travel
  • Window Zoom
  • Center
  • Displacement
  • Refresh
  • Previous zoom
  • Next zoom

Information:

  • Data search
  • Show coordinates
  • Measure distance

Access wms:

  • Add wms from filtered list **
  • Add wms
  • Adjust wms. **
  • Show info about wms

For now, those marked with an asterisk have a programming error because they are referred to a localhost and not to a web server. It also lacks some refinement in the coding of characters that does not allow to see well the letter ñ in "add".

Others:

  • Help
  • Save file as web map context
  • Upload web map file context
  • Close
  • Manually Modify Deployment Size

Connect from Google Earth

The system provides the opportunity to connect to data either wfs or wms; So that any program that supports standard OGC services could stick to it (GvSIG, ArcGIS, AutoDesk Civil 3D, Bentley Map, manifold CHALK, CadCorpEtc.).

Let's see how, for example, systems such as Google Earth can be pasted into the system:

Guatemala ides

We are going to "add, image overlay", then choose the "update" tab and there the "wms parameters" option is chosen. Then add a url:

http://www.segeplan.gob.gt/2.0/index.php?option=com_wrapper&view=wrapper&Itemid=260;
REQUEST = GetMap & SERVICE = WMS & LAYERS = Municipalities,
Departments_850, Portfolio_Areas.shp, Water bodies, Headers
Departamentales_800, Rios_200, Roads, Routes
Asphalted_850 & STYLES = ,,,,,,, & SRS = EPSG: 42500 & BBOX = 420673.5340388007,
1610754.0839506174,466326.4659611993,1642245.9160493826 & WIDTH =
893 & HEIGHT = 616 & FORMAT = image / png & BGCOLOR = 0xffffff & TRANSPARENT =
TRUE & EXCEPTIONS = application / vnd.ogc.se_inimage

This can be obtained from the different addresses in the mapbender metadata layer (from the orange button). There are more urls of the other layers available.

Once deployed that the system allows to choose which layers we want to see and the order

Guatemala ides

And ready:

Guatemala ides

Additionally, I recommend you take a look because there is much more to show in this project.

7 Replies to "Spatial Data Infrastructures for Guatemala"

  1. what we did to reduce the load of 30 sec to 9 sec approx was to make an overview at different scales and not serve mosaics as we were doing now we serve individual ortos always with Tilingatte processes
    +1

  2. Since the beginning of the IDF in Guatemala by the secretariat of planning and programming of the presidency have made several changes, now there is a section of services of maps or WMS, videos of how to connect to these services, and a completely renewed presentation The new IDE has information from various institutions such as MAGA, IGN, INE, etc. All this in http://ide.segeplan.gob.gt

  3. I've been testing it, and it seems to be much faster to display images.

    There are still some inconsistencies in the code table with accents

  4. Best regards

    What we did to reduce the load of 30 sec to 9 sec approx was to make an overview at different scales and not serve mosaics as we were doing now we serve individual ortos always with Tiling processes
    atte

    Walter Giron

  5. Yes, I suppose Tilecache is an exit, we should also consult other Metacarta solutions such as Open Layers.

  6. Very good job and very well your quick test.
    Today I thought of tilecache to speed up orthophotos. (tilecache demo)
    Does it work only for geoserver or could it be implemented in mapserver?
    In the IDE of Argentina use Landsat and also delay the download.
    Greetings to you

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