USER MANUAL

Graphic


Graphic representation

Photographs

Points

Precision ellipses

Configuration

Saving and opening configurations

Find elements

Export

Dgn

Bin

Format of the Aerotri graphic files

Graphic representation

Each element has its own characterizing representation. The size of point elements is relative to screen, i.e., they occupy a fixed number of pixels, not depending on the zoom. Thus, if some of them fall within a small area and cannot be correctly distinguished in a general view, they will visualise properly in a zoomed view.

Photographs

It is intended to represent the position of the photograph in a realistic manner. To achieve so, the program which generates the graphic calculates the position of every corner taking into account the orientation of the bundle and the height of the terrain. They can be represented at a smaller scale than the real one, thus allowing the draws of them not to superpose each other and viewing the graphic more clearly.

Points

Each point has the following default representation:

Control point: Triangle

   Complete       Red
   Incomplete    Green

Check point: Square

   Complete       Purple
   Incomplete    Green

None of the above: Bluish grey circle

If a point enters the adjustment as both control point and check point (for example, control point for planimetry and check point for altimetry, or vice versa), when drawing it it has preference the status of control point.

If the representation of control points or check points is eliminated, they are drawn as normal points.

Precision ellipses

The planimetric precision ellipses are shown, both the projection centre and point ones, as well as the precision segments in Z. The default representation scale is 2000 for both cases.

Configuration

The way each element and its name is displayed on the screen can be configurated in Configuration-->Element representation. Some or all of the characteristics that apply to some elements are defined as being equal to those of other related element, and so they automatically change when those of the refered element are changed.

Saving and opening configurarions

The way each element is represented, as well as the overall options, are saved within a file with equal name than the graphic one but extension cfg, and it is updated at the time of closing the graphic --for example, when a new graphic is opened. Any existing configuration file may be opened, by means of the order File-->Open configuration. What the program actually does is copying the contents of the selected file into the configuration file of the open graphic.

Each newly created graphic gets assigned a default configuration. This default configuration may be changed with the order “File-->Save current configuration as default”.

Find elements

This tool is placed under Find-->Find. When an element is found, other than being highlighted, it gets (and stays) selected. This can be useful to combine the search with some other tool. Supose for example that we want the information of photograph 445, but we don't know where that photograph is. We first select the information tool, and afterwards we ask the program to find the element. The element will be found, highlighted and selected, so that an ulterior click on the left mouse button will make the information related to that element be displayed. In the same way we proceed for other tools.

Export

All the elements of the graphic are exported, the visible ones as well as the hidden ones. The photographs and precision ellipses and segments are exported with their viewing scale at the moment of exporting.

Dgn

Each element is saved to a different level, as shown here:

Level 1: Photographs and projection centres
Level 2: Points, except those below
Level 3: Control points
Level 4: Check points
Level 5: Precision ellipses and ellipsoids of the projection centres
Level 6: Precision ellipses and ellipsoids of points
Level 7: Precision segments of the projection centres
Level 8: Precision segments of points

Graphic tries to export the graphic representation of points with an adequate size, computed from the size of the photographs and the total size of the graphic.

Bin

The codes assigned to each entity when exported to bin are those listed here:

"foto": Photograph
"cp": Projection centre
"p": Point, except these below
"pAc": Complete control point
"pAi": Incomplete control point
"pCc": Complete check point
"pCi": Incomplete check point
"Tfoto" ... "TpCi": Names of the respective elements
"ecXY": Precision ellipse, XY, of a projection centre
"epXY": Precision ellipse, XY, of a point
"scZ": Precision segment, Z, of a projection centre
"spZ": Precision segment, Z, of a point
"respA": Residual of control point
"respC": Residual of check point
"resf": Residual of image point (photo coordinates)
"dist": Distortion

Should there be any ellipse with a different orientation it would be assigned the codes "ecYZ" o "ecZX", and in the like manner for points. Also, where there any precision segment following the direction of a different axis, that axis would be indicated in code instead of Z.

Format of the Aerotri graphic files

The file format is described in the file FormatoGrafico.txt (in Spanish).