Publications by arsalvacion
R-NOLD 2012-05-21 04:46:00
Mapping Philippines earthquake data from January 2011 to January 2012 collected by PHIVOLCS using R ggplot package.I tried to recreate the earthquake map of the Philippines created using maptool and R plot function using ggplot2. Earthquake map using plot function Earthquake map using ggplot function Related To leave a comment for the au...
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R-NOLD 2012-05-23 05:48:00
Mapping Global Earthquake using XML and MaptoolsEveryday the US Geological Survey (USGS) publish earthquake data (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.html) all over the globe. Using XML and maptool packages of R I downloaded and map USGS earthquake data using the following codes :library(XML)usgseqweq1 = readH...
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R-NOLD 2012-06-06 03:18:00
While traveling across the Visayas, I encountered barangay (villages) with the name same as my last name. Using R and map data from gadm.org I search and mapped other villages in the country named “Salvacion”. Related To leave a comment for the author, please follow the link and comment on their blog: R-NOLD. R-bloggers.com ...
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Poverty Incidence in the Philippines
Every three (3) years, the National Statistical Coordination Board (NSCB) publish data on provincial poverty incidence in the Philippines. Using R, I put the tabulated poverty incidence data into maps to check pattern and changes on the country’s provincial poverty level. Related To leave a comment for the author, please follow...
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Earthquake Density in the Philippines (2011-2012)
Using the same data and package from my previous post, but minor tweak on the code, I produced the map below: Related To leave a comment for the author, please follow the link and comment on their blog: R-NOLD. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topics. Click here if you're ...
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RSMC 2011 Typhoon Tracks
While at Puerto Princesa Airport in Palawan and waiting for my flight back to Manila, I opened my laptop and started doing what I usually do (practice may skills in R) on my idle time. With some inspirations from spatialanalysis.co.uk, I tried to make a map that maybe relevant to the Philippines (especially this coming rainy season). ...
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Mindoro Digital Elevation Map
Saw a map produced by my previous student using a commercial GIS software.Using R raster package and data from diva-gis.org. I produced the same map Related To leave a comment for the author, please follow the link and comment on their blog: R-NOLD. R-bloggers.com offers daily e-mail updates about R news and tutorials about learni...
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3D Maps in R
Talking about elevation, one can also plot a wire frame 3D view of an area using the persp function. Using the same data source from my previous post, 3D view of Marinduque, Philippines was produced using the following code below: #############################################################################################library(map...
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Negros Quake Animation in R
Taken from a previous post in other website, maps below show the locations of epicenters and sequence of earthquakes that struck Negros last February 6, 2012. The bottom image is the animation these maps using animation package in R. Data was taken from United State Geological Survey. Related To leave a comment for the author, plea...
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Colored 3D Map
In my previous post, I showed how to make a 3D view of an area using the persp function. However, I felt this was not a complete representation, especially for digital elevation. While looking for some reference for my presentation on the use of R for data analysis and visualization, I came across a thread discussing ” 3d plot with...
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