Articles by Appsilon Data Science - R language

Shiny chat in few lines of code

July 2, 2017 | 0 Comments

Intro We live in a society heavily reliant upon communication, networking and information exchange. Think about all the chat apps that have recently popped out: WhatsApp, Messenger, Skype, Viber, Slack (not to mention Snapchat or Telegram). They have ... [Read more...]

Fast data loading from files to R

April 11, 2017 | 0 Comments

Recently we were building a Shiny App in which we had to load data from a very large dataframe. It was directly impacting the app initialization time, so we had to look into different ways of reading data from files to R (in our case customer provided ... [Read more...]

Fast data loading from files to R

April 11, 2017 | 0 Comments

Recently we were building a Shiny App in which we had to load data from a very large dataframe. It was directly impacting the app initialization time, so we had to look into different ways of reading data from files to R (in our case customer provided ... [Read more...]

Fast data lookups in R: dplyr vs data.table

March 2, 2017 | 0 Comments

R is a vector-oriented language and most of the things you do in R is optimised for that, but what if you need something less typical… What if you need to find a specific element in a dataset? There are a lot of options to do that in R, but ... [Read more...]

How to use viridis colors with plotly and leaflet?

January 24, 2017 | 0 Comments

“… avoiding catastrophe becomes the first principle in bringing color to information: Above all, do no harm.” - Envisioning Information, Edward Tufte, Graphics Press, 1990 Choosing colors for your plot is not so simple. Why is that so? First of all, it depends on numerous things… What plot are you creating? What ... [Read more...]

Making Shiny apps awesome

December 28, 2016 | 0 Comments

A week before Christmas our CTO, Marek Rogala gave a speech about ways to make Shiny apps do much more than usual during R enthusiasts meeting in Warsaw. In case you have missed this event we have published his presentation online: NOTE! in this pr... [Read more...]

Why have we created package to improve Shiny apps user interface?

December 15, 2016 | 0 Comments

Why? It’s always a challenge, when developing Shiny apps to create a user interface that is not only acceptable, but rather an exceptionally good looking one. Although Shiny is amazing framework it lacks a set of tools to improve both user experience and interface, like customized and modular components. ... [Read more...]

shiny.router – a simple routing package for Shiny

December 8, 2016 | 0 Comments

The time has come to release the first of our internal tools, which we use on a regular basis when developing Shiny apps for our customers. In just a few lines of code added to your project you get a helpful routing mechanism that allows to recreate a particular state ... [Read more...]

EARL Boston 2016

November 17, 2016 | 0 Comments

Last week our CEO, Filip Stachura, gave a speech at EARL conference in Boston titled “Rapid shiny development to blend experts knowledge into machine learning models”. EARL Boston Filip spoke to a huge number of R data scientists about how one ca... [Read more...]

Using sparklines in R projects

January 25, 2016 | 0 Comments

sticky noteFirst post on our blog! We welcome all data enthusiasts! Today we are going to show how to use tinny but useful library called sparkline. Sparkline itself is a small widget, using jQuery under the hood1. Both technologies - jQuery and the widget itselt are implemented in the JavaScript. ...
[Read more...]

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