Positions blocks

Position blocks allow to operate with position variables.

Note

In 1x PDI Builder, position variables are also refered to as Features. These features variables are composed as follows:

Type Name Content Range
Int32 longitude Longitude component scaled as 10-7 degrees (centimeter-level precision on the surface of the Earth) [–180, 180] * 10-7 scaled degrees
Int32 latitude Latitude component scaled as 10-7 degrees (centimeter-level precision on the surface of the Earth) [–90, 90] * 10-7 scaled degrees
Int32 height Height above the WGS84 ellipsoid in millimeters –

Constant Position

Constant Position block defines a position on Earth using Latitude, Longitude and WGS84 Height.

Constant Position block

  • Output

    Pin 0: Output of the configured position.

  • Configuration menu:

    Constant Position block configuration

    The following parameters must be configured to define the desired absolute position:

    • The coordinates can be set in UTM, MGRS (Military Grid Reference System), Decimal Degrees or Degress º ' ".
    • They are indicated through the latitude, longitude and altitude.
    • WGS84: The first time, the altitude must be defined with respect to the ellipsoid, WGS84. After this, MSL and AGL values will be calculated automatically and the user will also be able to define the altitude with respecto to the sea level, MSL.

Move

Move block outputs the position which is the result of moving the input position with the displacement of the input vector.

Move block

  • Inputs

    Pin 0: Input position.

    Pin 1: Input displacement vector in NED frame. It must be a vector of 3 elements, i.e. a 3x1 vector.

  • Output

    Pin 0: Output position.

Relative Vector

Relative Vector block calculates the relative vector in NED frame from the two input positions.

Relative Vector block

  • Inputs

    From: First position.

    To: Second position.

  • Output

    Vector: Distance vector from the first position to the second position.

Read Feature

Read Feature block reads a position from a FID (feature) variable.

Read Feature block

  • Output

    Pin 0: Position to read.

  • Configuration menu:

    Read Feature block configuration

    Users must select the feature variable where the position is stored.

Write Feature

Write Feature block writes a position to a FID variable.

Write Feature block

  • Input

    Pin 0: Position to write.

  • Configuration menu:

    Write Feature block configuration

    Users must select the feature variable where the position is to be stored.

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