Transformation of user map

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This task is intended for a binding (placing) the user map in arbitrary coordinate system to the control points with known coordinates

There are four versions of the placing:

- Place by 1 point (parallel transfer) - the mode is intended for shift of the user map in such way that the point indicated on a map coincides with the entered control point (it is enough to measure one point on a map and to enter coordinates of only the first control point).

- Place by 2 points (with scaling) - the mode is intended for shift and scaling the user map so that the indicated points on a map come into conformity with the entered control points (provided that the map does not require turn).

- Place by 2 points with rotation - the mode is intended for rotation of the user map around the first point specified on a map; the angle of turn is set by two pairs of points: measured (source) and control.

- Place by 2 points with rotation and scaling - the mode is intended for shift and turn of the user map around the first point specified by a map so that both points specified on a map come to conformity with control points.

 

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The user map is created in the coordinate system specified for control points in group «Target map type». Changing the coordinate system and projection parameters of a created map is carried out in dialog «Setting parameters of map projection», started by button "Parameters".

 

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Coordinates of control points can be entered as in degrees, minutes, seconds, and in meters.

 

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The operating procedure:

1. Choose a source map from the list of open user maps.

2. Choose a transformation method.

3. Choose system of coordinates in which the control points are set.

4. Enter coordinates of control points.

5. Specify the appropriate (source) points on a map by pressing the left mouse button - Measure button.

6. Press Ok button.

As a result of the application's work the new user map will be created in the system of coordinates specified for control points, and it will open in a new window.