So what’s a WebView? They are just small windows showing a webpage. Here’s an image of a page with four views on, click it to go to the page:
As you can see, WebViews provides a way to see many of your webpages at once, no need to load multiple pages or to click through, you just need to open this one page. Furthermore, it’ll do some error checking for you too.
Welcome back! (if that statement isn’t appropriate you’ll want to check out part 1 first: Gaia star data with D3 – part 1). We are going to make everything look much better, and then do a couple of optimizations.
Let’s make the sky look more natural, i.e. Black. In the current SVG specification there’s no way to set a background colour, so to work around that we’ll place a rectangle across the whole image.
Did you see the recent news from the ESA Gaia mission? It will eventually give the precise position and motion of one billion stars in our Galaxy (which is actually “only” one percent of the stellar population!). An initial release of data happened on 13th September 2016 and included the position, motion and distance of two million stars.
I wanted to take this data and play around with it and I like to play around with data with the help of D3. This is a web based visualisation tool, which unfortunately is restricted by the capabilities of today’s browsers. This means I’ve had to reduce the data points, however, I suspect we can still get some nice results.
This tutorial was designed to help you understand how to create your own node.js program – not how to copy and paste someone else’s code! (However… you might have some luck finding the complete code at https://bitbucket.org/akademy/save-the-world/src).
It may be useful to imagine: Earth has only minutes to live and you are our only hope – your teacher is barking orders at you in a manic attempt to teach you the skills you’ll need to defeat the invading armada. You need to set up a node.js server before the laser bolts start burning! Quick!
Forgive me for the break in communication. Let’s get right back into it.
It uses the search function in your new account to list the possible matches (usually just the correct one!). It works this way because the blog names on blogger are rarely the same as in wordpress, but it encourages people to update their links by showing them it’s different. It also displays a helpful message.
You may have seen the program Zoomify, or similar programs like, OpenZoom and DeepZoom, which quickly display large resolution images on websites without large amounts of data being downloaded – only the part which is needed is downloaded. Most of these applications use some kind of plugin to work (e.g. Flash or Silverlight), so I wanted to see if we could create one without any plugin, using only the HTML5 standards. Continue reading “CanvasZoom – HTML5 Canvas and code”
So that I could test some of the new HTML5 features I put together a new clock design, called the world clock.
HTML 5 is an upcoming standard for the internet, and it has some rather nice features such as the canvas tag. The new standard is currently only in draft but has already been implemented on many browsers such as Opera and Firefox.