Johnson County GIS Online
An Internet Mapping application of the Johnson County, Iowa GIS

Navigating Johnson County GIS Online

Toolbars

	Toggle Overview Map - This toggle overview map wil display or remove the inset county map in the left hand corner of the view
	Zoom In - The button with a magnifier glass and the plus sign is used to Zoom In to an area on the map. Either draw a rectangle to select an area of the map to be redisplayed or click and the map will be displayed at a more detailed view with the selected point at the center of the map. This process can be repeated until the desired location is displayed. This button can also be used in the county inset map to select an area.
	Zoom Out - The button with a magnifier glass and the minus sign is used to Zoom Out to a larger viewing area on the map. Either draw a rectangle to select an area of the map to be redisplayed or click and the map will be displayed with a larger view of the county and the selected point at the center of the map.
	Zoom to Full Extent - This is used to bring you back to the full extent of the county..
	Back to Last Extent - This is used to bring you back to the previous extent. If pressed it will return to the previously displayed map view. This is helpful when you have zoomed in a bit too closely.
	Pan - This button allows you to move the map up, down, left, or right.
	Indentify - As a specific layers boundaries are displayed, select this button and click inside the boundary for which you would like detailed information. Once this button has been clicked it will redisplay the map with summary information and options to view the County or City Assessor's information. You must set the layer you wish to identify to active.
	Search - Click this button to activate the search window. Here you will be search for parcel numbers and parcel addresses.
	Measure - The small ruler button is a Measurement Tool. The resulting measurements are approximate based on the accuracy of the beginning and ending location points.
	Buffer - This option will allow you to enter a buffer area around the parcel you have identified. (Not available on all sites)
	Select Records - This option allows you to select a single or multiple parcels by drawing a box around them. (Not available on all sites)
	Clear Selection - The eraser button is the Unselect button, which will clear the selected parcel information from the map view.
	Print - The Printer button will print the displayed map view
	Help - This button will bring you to this help page.

Layers

Layer Visible	Layer Non Visible	Layer Visible and Active	Layer Non Visible and Active

Any time that you turn off or turn on a layer you need to select thebutton to display your changes.

Legend

Any time you you select the button you will need to click the button to close this window.

Error Messages

Message: The Active Layer is not visible due to scale and features can not be selected.
Answer: Zoom to a scale where the layer is visible

Message: No selected features to buffer
Answer: Identify a parcel, street, river, etc... and then select the Buffer toolbar button.

Message: Unable to start. Required HTML Form missing (jsForm.htm)

Answer: You have either bookmarked the incorrect URL or are trying to refresh you page improperly (refer to the instructions below). To correct this go back to the URL: http://www.johnson-county.com/website/jcmap/intro.htm and rebookmark your page.

Page Refresh

When refreshing a page use the <ctrl> + <f5> keys. Do not use the refresh option that is available in your browser. It will not work properly.