What is the most efficient method for creating around 500 small images, using either JavaScript or server-side C?

Embarking on my initial endeavor to create images dynamically.

The goal is to present approximately 500 small images, each 32px X 24px in size with 16 colors, placed within table cells. Each image consists of a 2D array of colored pixels, with values provided by C-language CGI.

The final displayed image resembles a basic candlestick graph, with each candle being one pixel wide, similar to:

All 500 images are set to refresh every 10 seconds, but only about 30 will be visible at once and with changes occurring roughly every 10 minutes.

I have the ability to generate the images on either the server or client side. However, I require a starting point for an optimal strategy.

What is the most lightweight (no bulky JS libraries, hopefully), efficient (in implementation), fastest (execution speed), and cost-effective (minimal client-side RAM usage) approach to displaying these images?

Thank you!

Answer №1

When it comes to finding the most efficient solution for your needs, I have a clear answer:

  • swiftest
  • speediest
  • most economical

The ultimate choice for me is unquestionably http://code.google.com/apis/chart/.

You can entrust all the heavy lifting to Google's server.

And trust me, that's a game-changer.

Answer №2

Instead of using a JS library, consider utilizing Canvas for drawing each candle based on values generated by your C CGI. This approach allows you to make a simple AJAX call to retrieve the necessary data on the client side.

The canvas API is straightforward and can generate images with just a few lines of code. The process should be efficient enough that users won't notice the dynamic generation (even up to 30 images per viewport). Additionally, this method is cost-effective in terms of client RAM usage compared to static image display and does not add extra strain on your server.

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