4. hotspot identification tool in criminal cases
Spatial patterns of criminal cases testing tools Points Pattern Test, the tool to the nearest neighbor
index method as a basic principle. Points Pattern Test tool in the development process, the main use of
graphical modeling tool Model Builder, combined with the dynamic Python scripting language was
developed. Development process in which spatial processing tools used in the average nearest neighbor
spatial processing tools (Average Nearest Neighbor) and the calculation of polygon area of space
processing tools (Calculation Polygons Area). ArcGIS Spatial Processing and because there is no element
of area of polygons and calculating tools, so calculations using python script development tools and the
polygon area of the Calculation Polygons Area. By Calculation Polygons Area tool to calculate the exact
area of the study area after the input to the Average Nearest Neighbor tool for spatial patterns in criminal
cases, the nearest neighbor index calculation. After the use of space modeling tools will Calculation
Polygons Area tools and ArcGIS Spatial Processing Toolbox provides tools for graphical Average
Nearest Neighbor model.
Spatial patterns of criminal cases the processing of test tools are: First of all elements of the input point
of the criminal case file and the corresponding elements of the polygon file, using polygon area and tools
(Calculation Polygons Area) area of the elements of Polygons (Polygons Area), and input point feature
File (Input Feature Class) two parameters input to the mean nearest neighbor spatial processing tools
(Average Nearest Neighbor), mean nearest neighbor spatial processing tools (Average Nearest Neighbor)
Finally, calculate the nearest neighbor index (NNRatio) and a significant quantity of Z value test
(NNZScore), and to visualize the results window in the form of output.