Selecting a subset of crimes
When the map is first opened, the crime data for the past month is displayed for the entire City of Overland Park. However, most users are likely to want a selection that is more focused on a particular area within the community. In the upper left corner of the application, is a boxed area with the "Selected Crimes" tab highlighted. By adjusting the controls in this box, the user can alter both the time-frame for which crimes are shown and the geographic area in which crimes are located.
The controls next to the "Where" label allow you to define the geographic area in which you are interested. There are three general options: (1) the Full City, (2) a Specific Location (such as an address) plus a circular area around that location, or (3) a Specific Area (such as a neighborhood) and an optional surrounding area. The input controls for a Specific Location are shown by default, but the other options can be accessed simply by clicking on the bar with the appropriate label.
- Full City: Click on the "Full City" bar and the map will zoom out to the full extent of the City and the crime data will reflect all major crimes in the City for whatever time period you have selected.
- Specific Location (Point + Radius): In the Search box, type an address or intersection (do not use punctuation). As you type, a list of suggested matches will appear below and the more you type the more refined the list will become. At any point, you can click on an address/intersection to complete the search entry, or if the location that you want is at the top of the list simply hit the enter key. If the Search box background turns red, it means that you have either made a typing mistake or the location is not in our database (example formats: 7100 W 95th St or for an intersection: 95th St and Metcalf Ave). Select the radius around the location that you want by clicking the appropriate radio button (¬-mile, «-mile or 1-mile). The map will zoom into the selected location (marked with a blue push pin symbol) and draw the appropriate radius. Crimes within the radius and within the chosen time-frame will become the "selected" crimes, will be shown with a gray diamond symbol on the map, and will be the basis for both charts.
- Specific Place (Area + Optional Radius): In the Search box, type a place name (e.g. Oak Park Shopping Center). The system is programmed to recognize the names of large residential subdivisions, apartment complexes, and commercial developments. City council wards and neighborhood conservation areas are also included. As you type, a list of suggested matches will appear below and the more you type the more refined the list will become. At any point, you can click on a place name to complete the search entry, or if the location that you want is at the top of the list simply hit the enter key. If the Search box background turns red, it means that you have either made a typing mistake or the location is not in our database. Select the radius around the location that you want by clicking the appropriate radio button (0 miles, ¬-mile or «-mile). The map will zoom to the selected area and draw the appropriate radius. Selecting "0 miles" as the radius means that only crimes within the boundary of the place itself will be selected. Choosing the ¬-mile or «-mile options will extend the area of the place in all directions by the chosen distance. Crimes within the area you define will be shown with a gray diamond symbol on the map and will be the basis for both charts.
- When: Next to the "When" label are date entry boxes for the starting and ending dates that define the time-frame in which you are interested. The minimum time frame is one month and the maximum time frame is one year. Click in either of the date boxes and a calendar control appears. Use the arrow buttons to change the visible month and click on the desired day of the month to select a date. Using this section, you can easily view crime patterns for a particular month or quarter, or for nearly any period within the past year.Understanding the Map
The map displays a gray diamond symbol that represents the approximate location of each reported crime within the time-frame and geographic area that you selected. Darker shades of gray indicate that multiple crime incidents were reported at the same location. Crimes outside of the time-frame you have selected (but within the past year) or outside of the area you have selected are still shown with a small gray dot to provide context, but are not included in any of the accompanying charts. You can zoom the map in or out by clicking on the Zoom Slider in the upper left corner either by moving the orange slider triangle or by clicking the +/- buttons. You can move the map in any direction by doing a click+drag action with the cursor.
The map has background colors that represent the general land use pattern (for example, light yellow is low-density residential and light red is commercial). Click on the Legend tab in the upper left corner for a complete explanation of the background colors and crime symbols. Understanding the land use pattern can often provide insight into crime locations (e.g., commercial property often has more crime than residential property).
Understanding the "Distribution by Type of Crime" Chart
The pie chart immediately below the "Selected Crimes" area shows a breakdown of the selected crimes by category of crime. A generalized description of each crime category can be found at the end of this document. The label for each category includes the number of crime incidents in parentheses. If you hover the mouse cursor over a particular "slice" of the pie chart, the corresponding crime locations are highlighted on the map with a yellow halo. If you are particularly interested in Auto Burglary, for example, hovering over that slice of the pie chart will show the locations of all of the auto burglary cases. There is often a strong correlation between the way land is used and specific categories of crime.
Understanding the "Crime Trend Over Time" Chart
Across the bottom of the application is a bar chart that shows crime trends for the chosen area over a two year time frame. Important Note: this chart is not affected by the "When" settings in the Selected Crimes box. It will always show two full years of crime information starting with the most recent full month. The green bars reflect data from the most recent 12 months and the yellow bars reflect data from the 12 months before that. This chart is designed to help answer several time-based types of questions, such as: (1) is the overall crime level increasing or decreasing over time? (2) is the overall crime level greater or less than the previous year? (3) is the overall crime level for a particular month significantly higher or lower than what might be expected? or (4) does the overall crime level reflect seasonal variations?
Data Sources and Disclaimer
The information presented in this application is limited to serious crimes where the Police Department has filed an official report. The data is updated each night and so is current as of the previous day. Crime reports can change during an investigation, including possible changes to the way a crime is categorized or the date on which the crime actually occurred.
The maps and information provided by this Web site are based on data created by the City of Overland Park, the Johnson County Automated Information Mapping System (AIMS) and other government agencies. While Overland Park, AIMS and the other participating agencies have no indication or reason to believe that there are significant inaccuracies in the information presented, the data is presented "as is" and there is no representation of any kind by Overland Park, AIMS or any other participating agency that the data is accurate or is fit for any particular use. No warranty, explicit or implied, exists with respect to the information or graphic representations provided by this Web site. In no event shall the City of Overland Park, AIMS or other participating agency become liable to users of these data, or any other party, for any loss or damages, consequential or otherwise, arising from the use, operation or interpretation of the data. In using these data, users further agree to indemnify, defend and hold harmless the City of Overland Park, AIMS and other participating agencies for any and all liability of any nature arising out of or resulting from the lack of accuracy or correctness of the data, or the use of the data.