Blog Archives

Video: Adding user-interaction with drill-down/detail content from a database to a Google Chart web application (3/3)

The video series has taught us how to build a custom web service to deliver data to the web application showing a Google Chart. Displaying information is wonderful, but the chart shows only aggregated values. Any user of the application will have the desire to drill down into the data and not just see the sums and averages.

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Video: Add Google Charts based on a database query to web applications in Delphi Rio (1/3)

The next videos of the School Data Series tackle the visualization of numbers using Google Charts. Due to the amount of detail, I decided to split this topic into 3 separate videos.

The end result will look like this:

Student numbers will be grouped by zip code.

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5 Minute Snack: Preparing imported data for visualization, data cleansing

The last snack showed how easy it is to read textual data into a database with Delphi and FireDAC.

However, most of the times we cannot be happy just yet. Creating a good user-experience is our major concern at all times and we want to offer our users easy to read information.

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