Boundaries and NoData This table summarizes variables in files px_y_boundaries.shp and px_y_nodata.shp. Polygons in these files were created using the Total Station (TS) control points taken during census in year (Boundary), or during archiving by comparing plot boundaries of “y” different years and identifying areas not censused due to border mismatch (nodata). In the field, we used an arbitrary Cartesian coordinate system with origin at X=5000, Y=5000, and Z=100, which was first used in the 2001 census. We later moved the resulting polygons to match the location of boundaries used in 2001. Plots are not georeferenced, despite some of them have GPS information on the plot corners. Variable code and Storage Collection Variable Units Type code method Or Unique Numeric assigned by OBJECTID NA 1 NA point ID Integer ArcGIS v10 (ESRI) Type of assigned by Shape NA ZM NA geometry ArcGIS v10 (ESRI) calculated Perimeter by ArcGIS Numeric of plot 37.9-42 NA v10 (ESRI) Double boundary from TS control points or scanned
Boundaries and NoData This table summarizes variables in files px_y_boundaries.shp and px_y_nodata.shp. Polygons in these files were created using the Total Station (TS) control points taken during census in year “y” (Boundary), or during archiving by comparing plot boundaries of different years and identifying areas not censused due to border mismatch (nodata). In the field, we used an arbitrary Cartesian coordinate system with origin at X=5000, Y=5000, and Z=100, which was first used in the 2001 census. We later moved the resulting polygons to match the location of boundaries used in 2001. Plots are not georeferenced, despite some of them have GPS information on the plot corners. Variable Units Storage Type Variable code and Or code Collection method OBJECTID Unique point ID NA Numeric Integer 1 NA assigned by ArcGIS v10 (ESRI) Shape Type of geometry NA ZM NA assigned by ArcGIS v10 (ESRI) Perimeter of plot boundary Numeric Double 37.9-42 NA calculated by ArcGIS v10 (ESRI) from TS control points or scanned
Rodriguez-Buriticaetal2012.docx