Measuring spatial patterns is a crucial task in spatial sciences.Multiple indicators have been developed to measure patterns in a quantitative manner.However,most comparative studies rely on relative comparisons,limit...Measuring spatial patterns is a crucial task in spatial sciences.Multiple indicators have been developed to measure patterns in a quantitative manner.However,most comparative studies rely on relative comparisons,limiting their explanatory power to specific case studies.Motivated by advancements in earth observation providing unprecedented resolutions of settlement patterns,this paper suggests a measurement technique for spatial patterns to overcome the limits of relative comparisons.We design a model spanning a feature space based on two metrics-largest patch index and number of patches.The feature space is defined as‘dispersion index’and covers the entire spectrum of possible two-dimensional binary(settlement)patterns.The model configuration allows for an unambiguous ranking of each possible pattern with respect to spatial dispersion.As spatial resolutions of input data as well as selected areas of interest influence measurement results,we test dependencies within the model.Beyond,common other spatial metrics are selected for testing whether they allow unambiguous rankings.For scenarios,we apply the model to artificially generated patterns representing all possible configurations as well as to real-world settlement classifications differing in growth dynamics and patterns.展开更多
‘‘Vulnerability’’and‘‘resilience’’are terms of such broad conceptual meaning as to be almost useless for careful scientific communication,except as rhetorical indicators of areas of greatest concern.This is a ...‘‘Vulnerability’’and‘‘resilience’’are terms of such broad conceptual meaning as to be almost useless for careful scientific communication,except as rhetorical indicators of areas of greatest concern.This is a reflection of the complexity of their meaning,an uncoordinated search among different fields for a common understanding,and maybe the difficulty of systematizing these complicated issues among the various involved parties.展开更多
文摘Measuring spatial patterns is a crucial task in spatial sciences.Multiple indicators have been developed to measure patterns in a quantitative manner.However,most comparative studies rely on relative comparisons,limiting their explanatory power to specific case studies.Motivated by advancements in earth observation providing unprecedented resolutions of settlement patterns,this paper suggests a measurement technique for spatial patterns to overcome the limits of relative comparisons.We design a model spanning a feature space based on two metrics-largest patch index and number of patches.The feature space is defined as‘dispersion index’and covers the entire spectrum of possible two-dimensional binary(settlement)patterns.The model configuration allows for an unambiguous ranking of each possible pattern with respect to spatial dispersion.As spatial resolutions of input data as well as selected areas of interest influence measurement results,we test dependencies within the model.Beyond,common other spatial metrics are selected for testing whether they allow unambiguous rankings.For scenarios,we apply the model to artificially generated patterns representing all possible configurations as well as to real-world settlement classifications differing in growth dynamics and patterns.
文摘‘‘Vulnerability’’and‘‘resilience’’are terms of such broad conceptual meaning as to be almost useless for careful scientific communication,except as rhetorical indicators of areas of greatest concern.This is a reflection of the complexity of their meaning,an uncoordinated search among different fields for a common understanding,and maybe the difficulty of systematizing these complicated issues among the various involved parties.
