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Map Viewport Properties Dialog Box, General

Select General on the Map Viewport Properties dialog box to change the coordinate system, the projection, and the boundary options.

Coordinate system

Indicate the type of coordinate system that the map data uses.

  • Planar   Choose this option when map data is in X and Y coordinates, for example, for building plans.

  • Geographic   Choose this option when map data is in longitude and latitude coordinates, for example, for city locations.

Projection

Specify the method to use to project geographic coordinates onto a two-dimensional surface. Choose a projection that is compatible with the data that you are visualizing. The four spatial properties that are affected by projection are area, shape, distance, and direction. For views of the earth, a good choice of projection depends on the center view, the map boundaries, and the zoom factor.

Each of the following projections preserves one or more of these spatial properties:

  • Equirectangular   Choose this option to use longitude and latitude as rectangular coordinates.

  • Mercator   Choose this popular projection for smaller areas, for less distortion around the equator, or when you want to add a map layer with an existing tile layer that uses the Mercator projection.

  • Robinson   Choose this option for less distortion of large areas that span from the equator to the poles. Developed by Arthur H. Robinson in 1963.

  • Fahey   Choose this option for less distortion of large areas that span from the equator to the poles. Developed by Lawrence Fahey in 1975.

  • Eckert1   Choose this option to use equally spaced parallels in latitude and straight lines for meridians in longitude.

  • Eckert3   Choose this option to use equally spaced parallels in latitude and curved lines for meridians in longitude.

  • HammerAitoff   Choose this option for polar maps or world maps.

  • Wagner3   Choose this option for world maps.

  • Bonne   Choose this option to view the world as it appears in an atlas.

Page break options

Select options to indicate how content is fitted to a report page.

Boundary options

Specify the lower and upper boundaries for coordinates to control which part of the map appears in the report.

Minimum X

Lowest X value. Available for Planar only.

Maximum X

Highest X value. Available for Planar only.

Minimum Y

Lowest Y value. Available for Planar only.

Maximum Y

Highest Y value. Available for Planar only.

Minimum Longitude

Lowest longitude value. Available for Geographic only.

Maximum Longitude

Highest longitude value. Available for Geographic only.

Minimum Latitude

Lowest latitude value. Available for Geographic only.

Maximum Latitude

Highest latitude value. Available for Geographic only.

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