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Building Height Points

Use this ASCII-format to import building heights previously exported from CadnaA using the export function of the same name, or obtained as a separate file from the surveyor's office or the like. It may happen, however, that the file received shows the ground plans of the buildings and, within these ground plans, points which merely provide information on the height of these buildings. In the latter case, you will wish to allocate the heights of these points to the respective buildings as easily as possible. This can be managed by means of the command File|Import resp. Export|Building Height Points.

The ASCII file contains points with x-y-z coordinates which would lie within a building ground plan. When importing, only the z-coordinates are considered, and the height is allocated to that building in whose ground plan the respective point lies.

On import, the following text variables - based on the height points within the buildings border - are written into the Memo-Window of each building:

  • HH_NUM: number of height points
  • HH_HSUM: sum of all heights
  • HH_MEAN: mean height

It may happen that you adopt building ground plans from an automated real-estate map where no height information is supplied. The heights would then have to be determined in some way or another (e.g. by means of local inspection or aerial survey, etc.).

Having determined the heights and allocated them manually to the buildings in your CadnaA-file, you will of course wish to keep the height information even if the building ground plans are updated.

So, before transcribing your building ground plans, first export the building heights using the export format File|Export, format „Building Height Points“, and save them to an ASCII-file by specifying a name.

Having updated the building ground plans, just re-import the heights previously exported using the function of the same name.