Map Searching in WebVoyáge

WebVoyage provides you with a variety of options when searching for map-related items in your database. You can conduct a search for items by specifying a region which must be covered, in part or in whole, by the item. This region can be a rectangle, a polygon, a point or circle, a corridor or route, or a range.

To begin map searching, from the main search page click the Maps button. This will display the map-related search functions.

 

 Rectangle Search
Polygon Search
 Point and Radius Search
 Corridor/Route Search
 Range Search

Builder Search ¸ Combined Search ¸ Course Reserve Search
Help Contents ¸ WebVoyáge Icons ¸ More Searching

 Rectangle Search

The Rectangular Search function allows you to perform a search on a rectangular area. To define the area, you must provide the lower-left corner and the upper-right corner of the rectangle.

To perform a search on a rectangular area:

  1. Click the Rectangle Search button. The Rectangle Search tools appear onscreen.
  2. Enter whether you want your search to include only the area covered by the map or the Minimum Bounding Rectangle (the smallest rectangular area that would enclose the entire map) by selecting Polygon or MBR from the Footprint drop-down list.
  3. Enter which units you want to use in order to describe the coordinates by clicking on the Format Type drop-down and selecting a type from the list. You can select Degrees/Minutes/Seconds; Degrees/Decimal Minutes; Decimal Degrees; UTM Meters; MGRS; or UPS.
  4. Enter the coordinates for the lower-left point of the area into the field(s) in the Lower Left column. If you selected units of Degrees/Minutes/Seconds, Degrees/Decimal Minutes, or Decimal Degrees, you must enter a Latitude value and a Longitude value. If you selected UTM Meters, MGRS, or UPS, you must enter the point into the field in that format.
  5. Enter the coordinates for the upper-right point of the area into the field(s) in the Upper-Right column. If you selected units of Degrees/Minutes/Seconds, Degrees/Decimal Minutes, or Decimal Degrees, you must enter a Latitude value and a Longitude value. If you selected UTM Meters, MGRS, or UPS, you must enter the point into the field in that format.
  6. Select how many records you want to appear on each page of search results by clicking on the Records Requested drop-down and selecting a number from the list.
  7. Click the Search button to perform the search; or click the Clear button to reset the fields onscreen.

 

Builder Search ¸ Combined Search ¸ Course Reserve Search
Help Contents ¸ WebVoyáge Icons ¸ More Searching

 Polygon Search

The Polygon Searching function allows you to perform a search on an area that is not rectangular. You can enter up to ten points into the list. The area that will be searched is created by connecting each coordinate with the next in the order in which they were entered. (The first and last coordinates are also connected together.)

For example, if you entered Latitude and Longitude information into the fields Coordinate 1 through Coordinate 5, Coordinate 1 would be connected with Coordinates 2 and 5; Coordinate 2 would be connected to Coordinates 1 and 3; and so on.

To perform a search on a polygonal area: