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Under "state" it is possible to annex more descriptive data
to the physical objects, classified under the object code.
Typical information attached to a building might be
municipality, name of a road and house number.
Eg.
%N 2 %B Accuracy group
%D111 217 %B County/municipality number
%D112 6919 %B Road code
%D131 Snerlevej %B Name of road
%D132 Sa %B House number
%KG4 %U1 %B Building by rouf line
%L1KR yl x1 zi
y2 x2 22
y3 x3 z3
y4 x4 z4
yl x1 zi
%D %B Cancel all data fields
It is'important, when annexing descriptive data, that you
remember to cancel the descriptions, otherwise they are
transmitted to the succeeding objects. If e.g. you did not
cancel the descriptions with %D, and a new object fol-
lowed, e.g. a lake, the lake would inherit the same descrip-
tive data as the building, and that would cause nonsense.
Under "state" there is a possibility of stating data in
another data model than the object describing. By introduc-
ing the idea "tables" it is possible to state relational
connections, surveyors' data, digital high models and raster
data. As a consequence, localization has been removed
from the main structure, and has become something you do
not need to use.
As an example you can mention that it will now be
possible, by means of the DSFL-format, to inform of the
legal house numbers of each road in a municipality without
having to state a geographic placing.
You may say that earlier the descriptive data were linked
to the geometric localization of physical object whereas the
localization now has become descriptive data equal to the
rest of the descriptive data.
Under "state" it is also possible to transmit updating.
Whereas formerly, when updating, all data were often
exchanged once more, it is now possible to exchange 4 /-
data. Updating is based on the following command
structure:
%AF %B Updating begin
. the object to be updated is
identified here
%AT %B Updating to
. the result after the updating
. is stated here
%AS %B Updating end
In the new version of the DSFL-format, the format has
been extended to being able to include "stupid drawings".
It is now possible, to an object, to attach details of colour,
line-type, etc. which normally are used at an outdrawing.
Furthermore, object codes for map frames, grid points and
other map frame information are introduced. Finally, an
extension of the object codes and a strong revision of the
text and some of the examples has taken place.
These additions to the DSFL-format are the result of
applications from the users who have expressed a wish to
exploit these possibilities. It is my hope that it will be
possible to keep the DSFL-format alive through the good
cooperation between the users of the DSFL-format and the
working group who develops and maintains the DSFL-
format, until in the course of 5-10, years we will obtain an
international standard in this field.
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