Posts

Showing posts from April, 2011

How to go back from Yahoomail BETA to All New Yahoomail

Image
I have tried the new Yahoomail BETA. I am currently using the All new yahoomail which is an improvement of the Yahoomail Classic. I like the features so I adopted it and am using it for more than two or three years now (really am not so sure when I started adopting it). This morning I received an e-mail from Yahoo saying that they are improving the mail service. I then tried the BETA version. I say I don't like it that much because of the following reasons: 1. I'm not interested with the updates tab. 2. It has more advertisement than the previous version. 3. I don't like the integration of the Yahoo (with top stories, popular searches, etc.) page inside my mail. 4. I can't customize my chat status.It became simply Available, Busy and Invisible to Everyone. 5. I don't like windowed chat like that of Gmail. I prefer the tabbed chat from the All-new-Yahoomail. 6. My conversations are archived. 7. I don't like Facebook integration. Anyways, simply put, I&

Free Open Street Map data (i.e.shapefiles etc.) for the Philippines

Free Road data extracted from Open Street Map made available by Cloudmade . philippines.ai.zip   (28.7M) philippines.img.zip   (8.3M) philippines.navit.bin.zip   (12M) philippines.osm.administrative.bz2   (627K) philippines.osm.bz2   (29M) philippines.osm.coastline.bz2   (3.5M) philippines.osm.highway.bz2   (16.2M) philippines.poi.gpx.zip   (521.7K) philippines.poi.tomtom.zip   (334.6K) philippines.poly   (2.3M) philippines.shapefiles.zip   (20.5M) Abra Agusan Del Norte Agusan Del Sur Aklan Albay Antique Apayao Aurora Basilan Bataan Batanes

How to prepare elevation range of SRTM in ArcMap for 3d visualization in ArcScene

If you have a DEM, you might want to view it in 3D. For me, I do geovisualization in ArcScene, VTP or for simple presentations I use Google Earth. DEM or digital elevation models contain the heights of our terrain. It has a commonly interchanged counterpart term known as DTM (digital terrain model). DEM differs from DTM in the sense that DEM is not the elevation from the ground per se. It is the height with the buildings and other cultural features. DTM on the other hand gives the height of the bare ground. For DEM, we can obtain freely available datasets such as SRTM and ASTER . SRTM resolution is 90m X 90m for the Philippines while ASTER is 30m x 30m. Though ASTER is of higher ground sampling distance than SRTM, researches show that SRTM still proves to be more accurate than ASTER.  So for the purpose of visualizing our terrain in 3d. What we would first want to do is to prepare the DEM (i.e. SRTM DEM ) for processing. If we fail to do this, we will be confronted with a very lar