Volcano Shaver

Justin R. Papreck
8/30/2018

The topographical surface modification app you can’t live without

Because you can...

Why would I want to shave down a volcano, you ask?

  • Inactive volcanoes are a great place to hike, but offer no rest near the peak
  • We can model the flattening of the peak of a topographical map to model this
  • Create your own resting area atop New Zealand's famous Mauna Whau for rest or for a place to do yoga

Maunga Whau - Uncut

Using simple code with the Shiny Application, the user can input the maximum elevation, and the application truncates, or shaves, the the top of Maunga Whau. 

max <- INPUT
vvTop <- volcano
vvTop[vvTop > max] <- max

p = plot_ly(z = ~vvTop, type = "surface")

Shave it down!

Maunga Whau shaved at 164 meters.

Visit ShinyApps Now!

  • This app is available for download from Shiny Apps
  • It uses the powerful combination of ggplot2 and plotly to execute and produce a 3-D topographical image
  • The user input is very easy to use - just slide the bar!

This application can be used at: Volcano-Shaver