SPACE Menu

Features

OPEN ATAC DATABASES

SPACE allows you to open an ATAC (*.atx) database in ArcGIS. With this feature you can have your crime analysis database open in ArcGIS and ATAC at the same time and share highlights between these two powerful analytical applications. Query and highlight a crime series in ATAC, and then hit the "Update map with source data selections" button to highlight those points in ArcGIS.

• Open ATAC (*.atx) databases in ArcGIS for advanced spatial analysis
• Share highlights between ArcView and ATAC
• View your crime data in ATAC and ArcGIS at the same time

SYNCHRONIZE HIGHLIGHTS

ATAC to ArcGIS

SPACE provides an interface to highlight points in ATAC and view those highlighted points in ArcView. Query and highlight a crime series in ATAC, and then hit the "Update map with source data selections" button to highlight those points in ArcGIS for advanced spatial analysis.

ArcGIS to ATAC

SPACE also allows you to highlight points in ArcView and view those highlighted points in ATAC. Just hit the "Update source data with ArcMap selections" button to highlight those points in ATAC for further analysis.

• Identify crimes in ATAC and then highlight those points in ArcGIS to analyze them spatially
• Highlight points in ArcGIS and update your data in ATAC to show those highlights
• View your crime data in ATAC and ArcGIS at the same time

BUFFER

SPACE's buffer function draws a buffer around any highlighted points on your map. Users can adjust buffer size based on a linear unit or a data variable, change how the buffers overlap, and adjust how buffers dissolve based on a chosen variable.

• Find incidents near a place of find places near an incident
• Find incidents near other incidents

STUDY AREA

SPACE's Study Area (Activity Space) function provides a standardized area for conducting and comparing analyses. The "Create a study area polygon" button provides two options for creating your study area.

Exact extent of the points

Bounds the study area to the outer-most cases. This option creates a rectangle that touches your outer cases.

Extent of the points plus 10%

Creates a study area that is larger than the exact extent. This also helps you avoid edge effect errors by including important geographic influences outside the extent of your cases.

• Study Area identification
• Analysis of Distributions
• Spatial selections

SEQUENCE

SPACE's Sequence feature analyzes the movement from one case to another. It draws lines from event to event in the order of their occurrence. This allows you to analyze the length, direction, angle, bearing, order, and interval of the lines between your points. This can help you identify whether your series is growing or shrinking, and will aid in your efforts to predict future events. This will also allow you to derive a number of important ratios based on your crimes.

• Movement Analysis
• Forecasting
• Hunting ground identification
• Home range estimation

NEAREST NEIGHBOR

SPACE's Mean Nearest Neighbor function calculates a number of statistics based on your set of cases. Mean Nearest Neighbor increases in accuracy as the number of points increase.

Mean Nearest Neighbor Calculations:

• The distance from each point to its nearest neighboring point.
• The mean nearest neighbor distance of your points.
• Standard deviation and z-score of your points.
• Comparison to the expected random results for your sample size and study area.
• Complete Spatial Randomness (CSR) test.
• The distribution of your points (Clustered, Uniform, or Random).
• Uses for Mean Nearest Neighbor:
• Determine if points are Clustered, Uniform or Random.

MINIMUM CONVEX POLYGON

SPACE's Minimum Convex Polygon draws a bounding polygon around the outer-most points in your series. The outlying events serve as vertices for the polygon and all other events fall within the polygon.

• Site Selection
• Hunting Ground
• Activity Space estimation

SPIDER DIAGRAM

SPACE's Spider Diagram connects a group of points to their centroid with lines. This helps describe the relationship of points to their center. The Spider Diagram allows you to choose whether you would like to calculate based on an arithmetic or harmonic centroid.

Arithmetic Centroid

Uses the mean x and mean y of your points as the center.

Harmonic Centroid

Uses a weighted algorithm calculated against the mean x and mean y of your points as the center.

SPACE's Spider Diagram helps you determine whether the offender is a Marauder or Commuter, and whether the series is growing outward, or shrinking inward.

• Activity Space Estimation
• Lead List prioritization
• Marauder or Commuter identification.
• Inward or outward growth identification.

DIRECTIONAL DISTRIBUTION

SPACE's Directional Distribution creates an ellipse based on the central tendency your cases.

• Activity Space
• Hunting Ground

Directional Distribution calculations:

• A Least Squares trend line is calculated across the distribution of your cases.
  Mean X and mean Y coordinates are calculated.
• Standard deviations from the error against the trend line are derived.
• A selected standard deviation is used to define the outer bounds of the ellipse.

LINK POINTS

SPACE's Link Points connects two points that share common attributes. This allows you to calculate the distances from one point to another, between similar cases, or between two points in a series of events.

SPACE connects ATAC and ArcGIS to create the most powerful analytical solution in the world

ATAC (Automated Tactical Analysis of Crime) is used by law enforcement, defense and private organizations worldwide for pattern and trend identification, crime analysis and prediction.