Скачать или смотреть China bilateral trade flows on regional level (2013)

UN Comtrade bilateral trade flows data projected on regional level with gravitational model estimated on country level
Regional GDP data estimated with model using night light data
On visualisation stage filtered to show only major China trade flows

Models:
UN comtrade data bilateral trade flows projected on regional level with gravitational model estimated on country level:
log(trade_ij) ~ f( log(Population_i*Population_j), log(GDP_i*GPD_j), log(Distance_ij), adjacency_i_j )
Region level Population estimates with MaxMind Free World Cities Database
Region level GDP estimates (N =3230) with regional night light data (DMSP/OLS) & GADM spatial data {
some ideas from:
Henderson, J. Vernon, Adam Storeygard, and David N. Weil. 2012. "Measuring Economic Growth from Outer Space." American Economic Review, 102(2): 994-1028.
Fan J. et al. Comparative estimation of urban development in China’s cities using socioeconomic and DMSP/OLS night light data //Remote Sensing. – 2014. – Т. 6. – №. 8. – С. 7840-7856.
log(GDP)~ f(log(light_index), top_share_lighted )
light_index - agregated index of night light for given area
top_share_lighted - share of area above some light threshold level
estimated on country level (N~180, Adjusted R2=0.9089) projected on regional level (N=3230))
}


Data:
Night light data by NOAA/NGDC (DMSP/OLS) http://ngdc.noaa.gov/eog/ [acccesed 01.02.2015].
GADM http://gadm.org[acccesed 05.06.2015].
WDI http://data.worldbank.org/indicator/n... [acccesed 05.06.2015].
UN COMTRADE http://comtrade.un.org/ [acccesed 05.06.2015].
MaxMind, Free World Cities Database, https://www.maxmind.com/en/worldcities, [acccesed 01.08.2015].

Tools:
R Core Team (2015). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL https://www.R-project.org/.
South, Andy 2011 rworldmap: A New R package for Mapping Global Data. The R Journal Vol. 3/1 : 35-43.
Simon Urbanek and Jeffrey Horner (2015). Cairo: R graphics device using cairo graphics library for creating high-quality bitmap (PNG, JPEG, TIFF), vector (PDF, SVG, PostScript) and display (X11 and Win32) output. R package version 1.5-8. http://CRAN.R-project.org/package=Cairo
Robert J. Hijmans (2015). raster: Geographic Data Analysis and Modeling. R package version 2.4-20. http://CRAN.R-project.org/package=raster
Robert J. Hijmans (2016). geosphere: spherical trigonometry. R package version 1.5-5. https://CRAN.R-project.org/package=ge...

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