Subscribe: Steve Trefethen's Weblog
http://feeds.feedburner.com/SteveTrefethensWeblog
Added By: Feedage Forager Feedage Grade A rated
Language: English
Tags:
building dashboard  building  dashboard  data  find save  mobile  native  part  react native  react  read  rstudio shiny  shiny 
Rate this Feed
Rate this feedRate this feedRate this feedRate this feedRate this feed
Rate this feed 1 starRate this feed 2 starRate this feed 3 starRate this feed 4 starRate this feed 5 star

Comments (0)

Feed Details and Statistics Feed Statistics
Preview: Steve Trefethen's Weblog

Steve Trefethen's Weblog



stevetrefethen.com is the blog of Steve Trefethen. I am a software developer interested in .NET, testing, internet applications, automation and anything related to my family and friends.



Last Build Date: Tue, 13 Sep 2016 04:40:23 +0000

 



Installing R and Shiny on Cloud 9

Fri, 02 Sep 2016 02:22:29 +0000

I wanted to see if I could run an instance of RStudio’s Shiny server on Cloud 9 and after a bit of finagling with the right set of steps to get it set up I have an instance running. Here’s what I did starting from a workspace using the stock HTML template. I need to ... Read more(image)



React Native bundle loading failing on a physical device

Tue, 23 Aug 2016 23:47:07 +0000

I’m building a React Native application and recently updated to v0.31.0 and at first things were working well debugging on the device benefiting from a feature of the react-native-xcode.sh script. The script copies your Dev machine’s IP address to a text file called ip.txt which is used for establishing the connection to your machine from ... Read more(image)



Using Google Sheets, Pivot Tables and Charts as a Startup Dashboard – Part II

Thu, 18 Aug 2016 18:34:45 +0000

In my previous post I wrote about the process that lead me to build a dashboard but first I want to talk a bit about the structure of the data in the Google Sheet where the whole process started. I first started by looking to quickly create a few charts to visualize some of our ... Read more(image)



Lessons Learned in a Mobile Startup

Tue, 28 Jun 2016 06:09:32 +0000

Working on building mobile apps for the last several years I thought I would publish a list of some of the things I’ve learned here in the mobile trenches. Without further adieu and in no particular order… Btw, welcome your feedback/additions. Take a serious look at React Native. Faster releases, fewer bugs, that can be ... Read more(image)



From Google Sheets to an Automated Shiny Dashboard (Part I)

Sat, 11 Jun 2016 22:36:56 +0000

Over the past several months I’ve been building what’s become a large Google Sheet (which is now at the 2M cell limit) tracking Find&Save Cash Dash offers. Like a lot of data projects this one started out small but over many months grew to a point where it no longer makes sense to cut/paste SQL ... Read more(image)



Plotting Weekly Mobile Retention from the Localytics API using R and ggplot2

Sat, 28 May 2016 06:19:12 +0000

Part of building mobile web apps is understanding the myriad of mobile analytics and in part visualizing the data to shed light on trends that my otherwise be difficult to see in tabular data or even a colorful cohort table. I’ve been building a dashboard using R, RStudio, Shiny, and Shiny Dashboards aggregating data from ... Read more(image)



Useful Resources for Getting Started with R Programming

Wed, 18 May 2016 17:46:27 +0000

I previously blogged about building a dashboard using R and as with learning any new programming language there are a set of essential tasks to figure out before you can be very productive so I thought I’d post the set of bookmarks I’ve cycled through as I learn R. Using R — Basic error Handing ... Read more(image)



Fetching Localytics API Data in R and working with the JSON result

Fri, 13 May 2016 21:58:52 +0000

Recently, I’ve been building a dashboard for Find&Save using R, RStudio and Shiny Dashboards and one of our core mobile metrics is 30 day active users for both iOS and Android which I can get from Localytics (our analytics platform) via their API. Googling around I found I’m not reinventing the wheel (via SO) though ... Read more(image)



ReactNativeJNI: Check failed: *m_isDestroyed JSCExecutor::destroy() must be called before its destructor

Thu, 12 May 2016 06:08:08 +0000

Short post to get this indexed as we didn’t find it elsewhere on the web. While working to ship a new release of the Find&Save Android app we ran into a crash on launch which only occurred in our release build. The crash was in JSCExecutor.cpp which is part of React Native and left very ... Read more(image)



Fatal Exception Message Truncation in React Native

Thu, 03 Mar 2016 21:46:29 +0000

For some reason React Native truncates fatal error message to 75 chars which is a bit of a bummer when you’re looking at a Crashlytics report like this: “Unhandled JS Exception: undefined is not an object (evaluating ‘this.props….” We had line number data from the callstack but still, what was it that was “undefined”? "not ... Read more(image)