Place tile array

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Place tile array

Place tile array

Place tile array command places an array of tile rectangles which can be used as orthophoto boundaries. The area covered by the tiles can be defined by laser points loaded in TerraScan, the footprints of the active image list, or selected shapes.

Placing a tile array only works if a mission, a ground model, and an image list are loaded into TerraPhoto.

The size of the tiles is defined in pixels. Width and height of a tile can be constant (all tiles have the same size) or variable (tiles are minimized at coverage area boundaries). The figures below the command description illustrate different settings for array type, tile width and height.

To place an array of tile rectangles:

1. Select Place tile array command from the Rectify pulldown menu.

This opens the Place Tile Array dialog:

place_tile_array

2. Define settings and click OK.

This places an array of tile rectangles on the active level using the active symbology settings in MicroStation .

SETTING

EFFECT

Coverage from

Source from which to determine the covered area: Image footprints, Laser points, or Selected shapes.

Array type

Tile pattern to construct:

Regular grid - regular tile pattern. The positioning is organized as multiple of the nominal tile size.

X axis filling - tiles are extended horizontally.

Y axis filling - tiles are extended vertically.

Tile for each shape - creates an orthonormal tile for each selected shape at even pixel boundaries. This is only available if Coverage from is set to Selected shapes.

Tile width

Determines the tile width:

Constant - all tiles have a constant width.

Minimized by coverage - the width is minimized to the coverage area.

This is not available if Array type is set to Tile for each shape.

Tile height

Determines the tile height:

Constant - all tiles have a constant height.

Minimized by coverage - the height is minimized to the coverage area.

This is not available if Array type is set to Tile for each shape.

Require

Percentage of tile size that image footprints, laser data, or selected shapes must cover for the tile to be placed.

This is not available if Array type is set to Tile for each shape.

Inside fence only

If on, tiles are placed to cover fence contents only. This requires the placement of a MicroStation fence before the command is started.

Pixel size

Intended pixel size of the orthophotos.

Tile width

Width of a nominal tile in pixels.

This is not available if Array type is set to Tile for each shape.

Tile height

Height of a nominal tile in pixels.

This is not available if Array type is set to Tile for each shape.

Tile numbering

Order for placing text elements inside tiles:

None - no text elements are created.

North to south - increasing numbering from north to south and east to west.

South to north - increasing numbering from south to north and east to west.

Along element - increasing numbering in the direction of a selected linear element.

Prefix

Text that is included in the text elements before the numbering. This is only active if Tile numbering is not set to None.

First number

Number of the first tile and amount of digits used in the text elements. This is only active if Tile numbering is not set to None.

The Place Tile Array dialog can also be opened by using the Place Tile Array tool.

tile_array_regular_minimized

tile_array_regularRectangle_minimized

Regular grid 2000 x 2000 pixels with constant (red) and minimized (yellow) width and height.

Regular grid 2000 x 3000 pixels with constant (red) and minimized (yellow) width and height.

tile_array_x_filling

tile_array_y_filling

X axis filling with tile height 2000 pixels (yellow)

Y axis filling with tile width 2000 pixels (yellow)