TY - JOUR
TI - Effects of choice of data aggregation method to a point on walking accessibility results using the G2SFCA method
AU - Lechowski, Łukasz
TI - Effects of choice of data aggregation method to a point on walking accessibility results using the G2SFCA method
AB - 
	In spatial accessibility studies based on market areas, such as floating catchment area (FCA) family methods, it is crucial to identify the point to which weights are assigned, both on the demand and supply side. Bearing in mind that it is not always possible to work on disaggregated data, the aim of this paper was to investigate which method of determining a point, minimises bias in the estimation of walking accessibility. The research used the G2SFCA method, introduced by Dai, which has been employed several times to model walking accessibility. Results clearly show that point location methods for area units, based on disaggregating data to buildings, perform better at the scale of statistical districts or cadastral precincts, compared to those based on the centrally weighted mean. They also show that positional measures such as the Euclidean centrally weighted median can improve the results of analyses in units that are heterogeneous in terms of settlement network pattern.
VL - 2022
IS - 25 (4)
PY - 2022
SN - 1426-5915
C1 - 2543-859X
SP - 74
EP - 93
DO - 10.4467/2543859XPKG.22.023.17147
UR - https://ejournals.eu/czasopismo/pkgkptg/artykul/effects-of-choice-of-data-aggregation-method-to-a-point-on-walking-accessibility-results-using-the-g2sfca-method
KW - spatial accessibility
KW - walking
KW - GIS
KW - 2SFCA
KW - data aggregation