Visualising Temporal Data
October 20, 2011 § Leave a comment
As an activity in visualising temporal data in ArcGIS. World Heritage List data and Sydney Urban Growth data was looked at.
The world heritage list data had lists of sites with their type, name, location and data of addition.
The data was filtered to only list those in Australia, and color coded based on their type (red representing a cultural site, orange – a mixed site, and green representing a natural site). ArcGis has a time Slider tool, which when enabled, allowed the playback of the series of sites over time. New sites popped up over time (based on addition).
This file was then exported to kmz which could then be read on google earth. Due to google earth’s larger scaled representation of information, the text and symbology of the original had to also be made much larger.
Click here to see a recorded ANIMATION of the data progressing through time on Google Earth. (like the below animation, you may have to be signed onto your google account though).
Data on Sydney Urban Growth was also provided, however, stepping through this data (time-wise) revealed a missing polygon available to represent the state of urban growth in the year 1917. Hence, a 1917 image of urban growth was imported, rubber-sheeted, and traced as a series of polygons (whoms attributes had their date set to 1917).
This addition of such data allowed for a smoother animation of sydney urban growth through time (through ArcGIS). ( See RECORDING ).