Comments on: GeoDemo

By: Gerad

Gerad — Sun, 29 Nov 2009 02:28:21 +0000

Good work!

It was a bit slow on my browser but I really liked this!

By: Passenger57

Passenger57 — Thu, 26 Nov 2009 03:28:47 +0000

Also, if possible, it would be nice to automatically assign a relevant colour scheme depending on the variable being mapped.

eg, when showing income levels, low values should be red; when showing population levels, high values should be red.

ie, if it is a “negative” attribute then the colour scheme should be reversed, so you can quickly see the areas which require attention.

By: Hugh

Hugh — Thu, 26 Nov 2009 01:22:45 +0000

Thanks!

The sticky info or pin the info down suggestion is good. FYI – I got to improve the way the popup data is displayed in my other entry:

http://mashupaustralia.org/mashups/crimefinder

For the first cut of GeoDemo – I wanted to keep the stats simple. The framework’s there to handle any number of ABS Census stats, so I plan to add the rest of the basic Community Profile after this comp.

Cheers,
Hugh

By: Passenger57

Passenger57 — Thu, 26 Nov 2009 01:14:23 +0000

Wow. This is an awesome census visualisation application. Congratulations on a 5 star entry!

An enhancement request is the ability to “pin” the census details (eg, hovering over a polygon shows the results, but clicking on the polygon freezes the results until the next click) and allowing copy/paste of the results.

It would also be great to show multiple types of information. The current viewer shows Age and Income – what about a Transport option which showed number of cars, how they get to work, etc. Then a Language option which shows language spoken, a Religion option, etc? This could be a dropdown menu on top of the Select Map Theme dropdown, which would change what was displayed and reported.

Once again, congratulations on a winning entry.

By: Hugh

Hugh — Fri, 20 Nov 2009 09:23:24 +0000

Thanks alot Damon!

By: Damon Oehlman

Damon Oehlman — Fri, 20 Nov 2009 08:56:27 +0000

Top notch entry – best I’ve seen so far.

By: Hugh

Hugh — Fri, 20 Nov 2009 04:03:29 +0000

Thanks John, Josh!

I did dots on maps a while back… Interactive polygons are much more fun when you’re a geo-geek.

By: Josh

Josh — Fri, 20 Nov 2009 03:43:11 +0000

Good work Hugh

It’s great to see a mashup that actually involves smarts and some effort as opposed to just displaying points on a map. It was a big hit in our office.

By: John

John — Fri, 20 Nov 2009 03:36:10 +0000

Awesome Work Hugh, 5 stars!
I think you will find that it will be less then a few years

By: Hugh

Hugh — Fri, 20 Nov 2009 01:29:53 +0000

Cheers!

The control over which boundary to display is a good issue to raise, but its a fiddly one to solve.

You’d have to still impose some limits on what a user could see at what level due to client hardware and map performance limitations.

Currently in JavaScript, the limit is about 200 polygons with 2000 sets of coordinates in them. This is for IE. For Firefox and Chrome, and all browsers with Silverlight – the figure is higher, but is still client hardware dependant.

In a few years time, we’ll hopefully have no problem displaying all ~35,000 CCDs in a single map in any browser. I heard yesterday that IE9 will have graphics acceleration, so here’s hoping the laggard comes good…