Tagged: Free and Open Source

Personal Analytics Dashboard 2

Personal Analytics Dashboard using Metabase and Nomie

I love personal analytics. Ever since I have started logging using Nomie, I have experimented with data, mostly using spreadsheet. It’s interesting to find patterns and make corrections. Nomie uses CouchDB as the cloud storage. CouchDB is a great database but I prefer a simple RDBMS when I want to query. So sometime...

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Getting started with SystemML

Table of Contents1 Welcome to SystemML2 Install SystemML and Run Hello World3 Run advanced program using Spark4 Connect to Jupyter Notebook5 Run ML using Notebook on Bluemix I have been exploring data as part of work and hobby for a long time. My process mostly involves clean up, analyze and visualize. Something that...

M57 Ring Nebula 0

Exploring Astronomy with Internet connected telescopes

As a teenager I was very curious about stars and galaxies. Only time we could get to see something related was an yearly school trip to Jawaharlal Nehru Planetarium, Bangalore. As I grew up my interest moved to technology from science. Mostly because technology gave me an opportunity to tinker with. When I...

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Introduction to Querying JSON using JSONata

Table of Contents1 Getting Started1.1 Using JSconsole1.2 Into an HTML Page1.3 Using Try JSONata2 Let’s begin with some data3 Let’s write some more queries JSON is the defacto data format for web APIs. Usually getting the data you want out JSON means iterating through the arrays, find if the key exists and then...

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Going Serverless with OpenWhisk

I have been using Webhooks for a long time now. Webhooks are HTTP callbacks. They usually get called with HTTP Post request on an event. For example system one does a POST request on system two when something changes on system one. These are typically used by heterogeneous systems for plumbing. In my...

Expo Browser Preview 0

Expo.io – Building Android and iOS Apps using React Native Made Easy

I have used MIT’s AppInventor in class rooms. All non-professional programmers appreciate how easy it is to use AppInventor to create apps. I have also seen lot of professionals using it to create one time use apps including me. It’s a great tool except you can’t generate an iOS app. On the side...