Height from model

Finding a height from the terrain model. The model can be a terrain model or a difference in surface height. You can e.g. get height for the digitized points, calculate pole lengths from the to of the pole to the rock bottom or make control measurements.

Points

Points to be calculated can be either

When moving cursor while pressing the button of the mouse together with the SHIFT button, you can get continuous height reading.

Calculation

Calculation result can be either

Max is maximum distance with the C-distance.

Edge distance

Makes it possible to find height outside of the visible model. If the point position is within given distance from the model, height is extrapolated from the nearest visible triangle.

Model dZ

Value added to the model height.

All models

Searches height from all used models in the element list and uses model with smallest height difference to the calculated point.

Saving, Control, +/-

The results can either be

Last two options are available only if you use actual point and not just mouse point.

Control saves result values as a control attributes to original points. If calculation option Slope or C-distance is selected, it is stored as a control. Otherwise distance to model (Z - model z) is stored. Other options are not available. Control arrows are drawn according the control measurement settings.

Setting +/- stores sign character to attribute also for positive values.


Special settings

There are some special settings related to this function.

HeightAttrList

List of code field and attribute names.

OriginalHeight

Attribute name used to store original height of modified point. Used with Z-coordinate option.

See also: Using special settings