Here is an yet another interesting python tutorial to fetch intraday data using Google Finance API , , store the data in csv format and also plot the intraday data as candlestick format. We are using plotly library for plotting candlestick charts and pandas to manage time-series data.
Nice initiative from Economic times as it started using ChartIQ Realtime Charts in its technical analysis charting section for NSE and BSE stocks and indices. Currently Economic times supports 15min, 30min, Daily, weekly, Monthly timeframe. If you are very new to ChartIQ then ChartIQ is the industry standard when it comes to Realtime Charting in Mobile. They also lead the way in charting and analyzing software for all trader types.