MFL : Statistician, useR

Assorted Shiny apps collection, full code and data

Here is an assortment of R Shiny appsthat you may find useful for exploration if you are in the process of learning Shiny and looking for something different. Some of these apps are very small and simple whereas others are large and complex. This repository provides full code and any necessary accompanying data sets. The repo also links to the apps hosted online at shinyapps.io so that you can…

Custom images for Shiny dashboard valueBox icons

The shinydashboard package provides functions like valueBox that conveniently display basic information like summary statistics. In addition to presenting a value and subtitle on a colored background, an icon may be included as well. However, the icon must come from either the Font Awesome or Glyphicon icon libraries and cannot be image files.

I’ve provided a gistthat shows how to achieve the use…

mapmate has now been updating from version 0.1.0 to 0.2.0 on Github. The key change is the incorporation of new functions, help docs and code examples focused on network maps, which is a more complex map type not previously covered. The new tutorial content below provides a a couple basic code examples for making network maps with mapmate.

While mapmateis aimed at still image sequence generation,…

mapmate has now been updating from version 0.0.2 to 0.1.0 on Github. The biggest addition is a number of plotting options for making different kinds of maps. The new tutorial content below provides a number of code examples for making a variety of maps and also highlights current limitations associated with certain map types and settings.

Since the code snippets below generate a lot of different…

mapmate is an R package for map- and globe-based data animation pre-production. Specifically, mapmatefunctions are used to generate and save to disk a series of global map graphics that make up a still image sequence, which can then be used in video editing and rendering software of the user’s choice. This package does not make simple gif animations directly from R, which can be done with…

Animate maps with mapmate: R package for map- and globe-based still image sequences

Introduction to mapmate

mapmate (map animate) is an R package for map animation. It is used to generate and save a sequence of plots to disk as a still image sequence intended for later use in data animation production.

The mapmate package is used for map- and globe-based data animation pre-production. Specifically, mapmatefunctions are used to generate and save to disk a series of map graphics…

R animation: global climate change

I have posted a new R data animation video. It’s an example animation of modeled historical and projected global temperature change from 1850 – 2100. The data prep, analysis, full processing and generation of all sets of still frames for each layer in the video are done using R.

Typically an ensemble of models would be used but…

Animated great circles on rotating 3D Earth: Example R code

Making still frames for great circle animations in R

Matthew Leonawicz

Here I share R code I used to produce animated great circle arcs on top of a rotating 3D Earth. The code is not entirely reproducible but you should be able to use what is shared here to create your own video frames given your unique data and computing environment and resources.

[youtube=http://www.youtube.com/watch?v=uQYR91qi…

R animation: global SNAP Shiny app users

For the blog readers, just a quick heads up that I have posted a new Rdata animation to YouTube. A complete post will follow, but for now here is the video. It displays the social network of SNAP Shiny app users over about the past year and a half using great circle trajectories on a rotating 3D Earth. It’s best in 1080p, but still somewhat degraded for streaming. I’ll post the raw source video…

R Shiny leaflet: using observers

Using leaflet in R is fairly simple and there are plenty of online resources and examples available already. See the RStudio tutorial to get started if you haven’t already. This post presents a series of examples which build upon each other.

The code displays both point data and raster data on leaflet maps with Shiny app integration. The focus here is to show the utility of event observation on…

Upload shapefile to R Shiny app to extract leaflet map data

In this post I share an R Shiny appwhich uses the leaftlet package for interactive maps. This app differs from prior apps I’ve made featuring leaflet maps. First, it displays rasterized map data rather than just point layers. Also, longitude and latitude sliders in the browser allow for cropping the map. Additionally, the user can upload a shapefile to crop and mask the rasterized data overlays…

R animation: great circles 3, final draft

Here is the final draft of my great circle arcs R animation. I made this back in January shortly after my first two drafts, but am only now getting around to sharing it, which is a typical representation of how seldom I can make time for blogging. But given the recent spike in interest (thanks to Urban Demographicsfor sharing my work) in the first, and roughest, draft, I am motivated to finally…

R plot: Comparison of Fairbanks, Alaska and Beijing, China air quality

Here’s an interesting R plot comparing a specific air pollution metric between Fairbanks, Alaska and Beijing, China. Right off the bat, Beijing obviously has far worse air quality, and more significantly, it is a chronic, daily problem. But it is used for comparison because we already know this is the case.

In Fairbanks, while air quality is known to decrease in very cold weather and the…

Climate projections by cities: R + Shiny + rCharts + leaflet

I have approached a final draft of my Community Charts version 4 Lite, now with leaflet map integration. This RShiny web application shows projected climate trends for various Alaska and western Canada communities. Note that if no other users are already connected to the app, it will take a moment (maybe ten seconds?) to load the initial data set into the global environment, but there is an…

Animated great circles 2: smoother lines

Here is draft two of my great circle arcs R animation. This time I focused on improving the smoothness of the lines and removing some buggy line behavior, keeping it on a flat map for now. As with DRAFT 1, the YouTube video is of significantly reduced quality, to the point that you will see zero improvement. It’s really not even worth watching there. A much higher quality source video is…