R Programming Language - Need an R developer for input geotiff calculations of shapefile polygons

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Project Description

Need and R developer to create my arcgis model process, but the model needs to run quicker!

I have a model in arcgis 10.5 ModelBuilder to represent a process that I need to run for thousands of polygons and input raster combinations. The problem is that to this model, for one polygon, takes approximately 8min 57 seconds to complete. When I work out how many iterations I will need, that is around 24 days of running time! Way too long. The input raster sizes are approximately [url removed, login to view] decimal degrees cell size covering the entire globe.

The model schematic is attached.

1. For each country, calculated the total population (population raster)

2. weight average the PM_raster based on the polygons total populations (=(pm_raster * (Population_raster/total_pop))

3. Run zonal statistics to sum the weighted PM_weighted%n% and that is the average PM weighted on the countries population.

Can this be done quicker in R? How long do you estimate each iteration to take?

The output has to be something that I can run with a few guiding notes.

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