| iTool User's Guide: Working with Maps |

## Using the Map Panel

The iMap tool has a Map panel (Figure 15-2) that lets you manipulate the map display. The panel also appears when you apply a map projection or shapefile into another iTool.

Figure 15-2: The Map Panel in the iMap Tool

Figure 15-2: The Map Panel in the iMap Tool

Table 15-3 describes the items on the Map panel.

Table 15-3: Items on the Map Panel

Table 15-3: Items on the Map Panel
Name | Description
--- | ---
Location | Displays the following information: If no map projection is applied — the cursor location in degrees longitude/latitude or meters, depending on the image units If a map projection is applied — the cursor location in degrees longitude/latitude and the corresponding Cartesian X/Y (or U/V) coordinates in meters Sensitive only if an image or a contour is selected.
Data Value | Displays the following information: For an image — the data value and corresponding grayscale or RGB value for the current cursor location (identical to Pixel Value on the Image panel) For a contour — the data value for the current cursor location Sensitive only if an image or contour visualization is selected.
Longitude limits | Displays the active map projection's maximum and minimum longitude values. Enter new values to update these limits. Sensitive only if a dataspace (or a visualization within the dataspace) with a map projection is selected.
Latitude limits | Displays the active map projection's maximum and minimum latitude values. Enter new values to update these limits. Sensitive only if a dataspace (or a visualization within the dataspace) with a map projection is selected.
Edit Projection... | Opens the Map Projection dialog for the currently active dataspace. For more information, see Applying a Map Projection.

IDL Online Help (March 01, 2006)