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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)