Recast data from one geographic standard to another

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I'm working right now a project looking at medical labour supply in rural areas in Australia. I aim to use STATA for most of this analysis, but a change in geographic standards by the Australian Bureau of Statistics has created a problem. To be more specific:

• The program whose effect I am focussed on uses the old Australian ASGC 2006 Statistical Local Area (SLA) as a base
• The ABS makes most contemporary data available using the newer ASGS Statistical Area level 2 (SA2) standard

Digital Boundaries are available for both of these on ABS Boundaries Online. I need to recast some of this contemporary data (Building Approvals, population, etc.) to the older standard. I am thinking of using a population grid (ABS Population Grid 2011) as a base on which to recast the data from one set of boundaries (SA2) to another (SLA2006). i.e. Look at the fraction of population in one SA2 that fits into the SLA, and transfer that much of the SA2's data to the SLA.

Any ideas on how I could do this in ArcGIS or QGIS? Thank you for your help!



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