Spatial Variables and the Nang Rong Projects

Spatial Variable Name	Description	Date
SACPC006	Network Analysis Variables: A variety of distance measures were calculated for this variable, including distances within Nang Rong District from 1983 villages to health centers, district towns, and major intersections.	March, 1995
SACPC009	Network Analysis Variables: Distance measures from villages to health centers within Nang Rong District at different years were calculated for these variables.	March, 1995
SACPC017	Network Analysis Variables: These variables are similar to SACPC 006 and SACPC009, but extended to a buffer zone around Nang Rong District.	May, 1995
SACPC018	Network Analysis Variables: These variables are similar to SACPC 006 and SACPC009, but distances were calculated for different types of road surfaces.	June, 1995
SACPC026	Network Analysis Variables: These variables are similar to SACPC018, but different assumptions were made about road-type attributes, such as travel speed and seasonality.	August, 1995
SACPC031	Land Competition and Pattern Metric Variables: This set of variables deals with the dominance of different land cover types at various buffer dimensions around villages.  Additionally, pattern metrics were calculated at different buffer dimensions around villages.	March, 1996
SACPC037	Land Competition Variables: These variables measure the density of villages within different buffer zones of other villages.	August, 1996
SACPC039	Pattern Metric and Soil Suitability Variables: This set of variables measures the biophysical and suitability conditions in different buffer zones around villages.	February, 1997
SACPC040a	Land Use Variables: These variables are measures of land use area percentages at variable buffer zones around villages.	June, 1997
SACPC043	Land Competition Variables: Similar to SACPC031, these variables calculate the density of villages at variable buffers as a proxy for land competition.	February, 1998
SACPC045	Land Use Variables: Similar to SACPC031, this set of variables calculates the percentage of various land use types at different buffer dimensions from villages.	February, 1998
SACPC046	Pattern Metric Variables: These variables are a reworking of SACPC031, and recalculate a series of pattern metrics at different buffer dimensions for a series of years.	February, 1998
SACPC047	Pattern Metric Variables: These variables were calculated in support of a dissertation, calculating pattern metrics for certain land covers at 2 kilometer buffers around villages.	February, 1998
SACPC048	Pattern Metric Variables: These variables were calculated in support of a dissertation, calculating pattern metrics for certain land covers at 2.5 kilometer buffers around villages.	February, 1998
SACPC049	Pattern Metric Variables: These variables were calculated in support of a dissertation, calculating pattern metrics for certain land covers at 3 kilometer buffers.	February, 1998
SACPC050	Pattern Metric Variables: These variables were calculated in support of a dissertation, calculating pattern metrics for certain land covers at 1.5 kilometer buffers around villages.	February, 1998
SACPC051	Pattern Metric Variables: These variables were calculated in support of a dissertation, calculating pattern metrics for certain land covers within Thiessen polygons representing potential village territories.	February, 1998
SACPC052_1	Village Distance Variables: This variable is a calculation of the Euclidean distance, in kilometers, between all village pairs.	April, 1998
SACPC052_2	Village Distance Variables: This variable is a calculation of the Euclidean distance, in kilometers, from the original study villages to all other villages.	April, 1998
SACPC052_3	Village Distances: This variable is the Euclidean distance from each original study village, in kilometers, to the nearest other village.	April, 1998
SACPC052_4	Village Distance Variables: This variable is the Euclidean distance from each original study village, in kilometers, to the Nang Rong district boundary.	April, 1998
SACPC053_1	Shared Land Variables: This variable calculates the percent of shared land, at 2 kilometer buffers, among the original study villages	April, 1998
SACPC053_2	Shared Land Variables: This variable calculates the percent of shared land, at 3 kilometer buffers, among the original study villages	April, 1998
SACPC054	Land Use, Land Cover, and Terrain Variables: These variables calculate the percentage of each study village's territory, at varying buffer dimensions, that are in each each land use, land cover, and landform type.	December, 1998
SACPC056	Intervening Bridges and Rivers Variables: These variables calculate the number of bridges and rivers that are encountered or crossed between all pairs of study villages.	August, 1999
SACPC057	District Distance Variable: This variable calculates the Euclidean distance to the nearest district (not including Nang Rong district).	December, 1998
SACPC059a	Study Village Buffer Overlap: These variables calculate the percent of overlap between variable buffers around study villages, as well as all district villages.	August, 1999
SACPC061	Village Electrification Variable: This variable calculates the year in which each village within Nang Rong district was first electrified.	June, 2002
SACPC064	Health Center Distance Variables: In each year that a social survey was administered, these variables calculate the network distance and travel time from the study villages to health centers and hospitals.	September, 2003
SACPC065	Land Use Matching Variables: This variable pulls together household-level parcel data from Form 6 and the Land Use Matching Form.  Information regarding the number of parcels used per household, ages of parcels, and the land uses for each parcel from 1999 to 2001 is included.	January, 2004
SACPC066-67	Pixel Trajectory Variables: These variables provide pixel-level information about land use and land cover trajectories.  The land use history of each pixel, which is the sequence of changes each pixel has undergone throughout a series of classified images, was created.  Special emphasis was placed on important  deforestation, reforestation, and static landscape scenarios.	November, 2004
SACPC068	Land Competition and Pattern Metric Variables: Similar to SACPC031, SACPC043, SACPC045 and SACPC046, these variables are calculations of various measures of village competition, as well as 3 kilometer village buffer land use composition, terrain conditions, and pattern metrics.	February, 2005
SACPC069	Bangkok Migrant Variables: These variables extract migrant-level data from Forms 7, 8, 9 and 12.  The forms contain information regarding social and economic endowments, economic activities, length of tenure in Bangkok, and other basic demographic data (age, education, sex, etc.) for villagers who migrated to Bangkok from Nang Rong..	May, 2005
SACPC070	Bangkok Migrant Variables: These variables, extracted from SACPC069, are 2000 village-level data that contain three population variables (total, male and female) for the 40 migrant study villages.   The second data set (sacpc071) is the 2000 individual-level data set that contains all living individuals in the 40 migrant study villages.	June, 2005
SACPC071	Bangkok Migrant Variables: These variables, extracted from SACPC069, are 2000 individual-level data that contain all living individuals in the 40 migrant study villages.	June, 2005