Map Viewer

Developed by Epidemiology Resource Center Public Health Geographics
The ISDH Map Viewer is a resource for viewing the distribution of Indiana health statistics and identifying community health assets. Capabilities include: investigating county data and statistics, loading your own county data for mapping, exploring locations of health or health-related activities, loading your own sites into the map, defining areas of interest, identifying and measuring locations within areas of interest, mashing-up webmaps from other sources, and loading custom menus developed for specific projects. Features are still being enhanced and added. ISDH PHG does not guarantee the accuracy of the content provided in the Map Viewer. The Map Viewer should currently only be used for exploratory purposes.


1. The Application Layout. The default application interface is divided into 3 panes below a title area. The 3 columns consist of a menu pane, a visualization pane and a data list pane. Application performance varies between browsers. Chrome offers excellent performance.
2. Menu Organization. The menu pane consists of four distinct themes - County Stats, Sites, Areas of Interest and Web Maps. The menu for each theme is available by selecting the desired tab at the bottom of the menu pane. The content of each menu is grouped into general headings and then further grouped into expandable tree-like structures.
3. Mapping County Stats. To begin mapping county stats, simply select the Stats tab at the bottom of menu pane (if not already selected) and select an item under any of the headings and tree structures. The map and data list will group similiar county values together and change shading accordingly. Only one statistic can be mapped at a time. To change how a statisic is mapped (e.g. count or rate), go to the Stats and Options Settings heading.
3. Mapping Community Sites. To begin mapping community sites, simply select the Sites tab at the bottom of menu pane and select an item under any of the headings and tree structures. Only one type of site can be mapped at a time, but sites can mapped over the currently selected statistic. For more information about a site, mouseover or click the desired point on the map to show pop-up. Sites are also itemized in the data list pane under the sites tab.
4. Creating Areas of Interest. An Area of Interest (AOI) let's you define a geographic area on the map. An AOI can be created in many ways including from pop-ups or from the AOI menu by selecting the AOI tab at the bottom of the menu pane. An AOI can be created by selecting pre-defined areas or by sketching shapes on the map. By default, sites falling within the AOI are highlighted in the data list pane. The number of AOI's in which a site instersects is also provided.
5. Linking Sites to Stats. By default, sites are linked to AOI's so that when a AOI is created, the site is identified as either within or outside of the AOI. Sites can also be linked to stats. On the sites tab of the menu pane, select link sites to Stats. In the data list pane, sites are grouped by county and highlighted according to the county statistics grouping. The total number of sites within each statistical group is summarized on the sites tab in the data list pane.
6. Exploring Web Maps. Web Maps are images created on a web server and overlaid on the Map Viewer. Simply select the Webmap tab at the bottom of the menu pane and select from available web maps. Only one web map can be drawn at a time. When using web maps, you may want to hide stats, sites and AOI's. To accomplish this, click the eye on the desired tab at the bottom of the menu pane to toggle theme visibility.
7. Navigating the Map. At the bottom of the map/visualization pane, a few tools will help you navigate the map. Select reference maps from the Base Maps button or click +/- to zoom in and out of the map. Zooming can also be accomplished by holding the shift key while dragging a box with the left mouse key while over the map. To pan the map, hold the left mouse key and drag while over the map. The Indiana button will return you to the full extent of the state.

More detailed instructions and FAQ's to come!
More Map Viewer stats and sites to come!