Through the overlays so-called „One to one" or „One to
many" relationships between the map of units of volume
and the results of the overlays are created. At the
analysis in UQUADO an unit of volume is selected in the
map of units of volume and corresponding information
(e.g. the existence of a dangerous waste from the past)
can be won through the relationship to the overlays
(Figure 6). For this the cursor technique is used which is
well known in data base operations.
Units of volume Coverage KOERNE (TG3)
$RECNO AREA PERIMETER KOERNE# KOERNE-ID RE
7
8
9
10
11
431.865
395.907 8
2,286.080
5,496.519
206.521
9,895.750
5,254.750
26,653.560
289,874.100
2,565.938
22
One to one
Overlay of TG3 with llayer ALTLAST
SRECNO
ID TG3ALTLASTé ID TG3ALTLAST-ID ALTLAST KOERNE-ID
80 80
81 81
82 82
83 83
>>>»
One to many
Overlay of TG3 with layer BODEN
KOERNE-ID
ÉD +
= Le)
Set
SRECNO ID TG3BODENé ID TG3BODEN-ID BODTYP
1560
1561
1562
1,560
1,561
1,562
L31
L31
L32
1575
1576
1,575
1,576 1,
1628
1629
Figure 6: Relation between the map of units of volume
and overlays
Beside the vector data the possibility exists likewise, to
integrate raster data (aerial views) into the system. To
display images they must first of all geocoded by using
rectification or generating orthoimages [Schiewe/Siebe,
1994]. Then they can be presented as background
information to the map of units of volume on the monitor.
In addition the layers can be displayed as well as the
original land use map .
3.4 Program organisation
To guarantee the clarity of the program and better
adjustment at changes, a modular construction has been
chosen. The program is composed of approx. 60 different
modules and 16 menus. A flow chart makes it possible for
the programmer to win a fast overview and to understand
the co-operation of the individual modules.
The program UQUADO divides into two mean parts
(Figure 7):
e Data capture and editing
e Presentation and analysis
The main emphasis of UQUADO has been put on the
area of analysis and presentation.
In the current version of UQUADO data for three test
areas are implemented. After the selection of a test area
a menu appears, over which analysis -, presentation -
and output possibilities are offered.
| START |
| c ]
DISPLAY: | [EDITING HELP
Arcplot: 1. OVERVIEW | \Arcedit: DIGITIZING | [INFO
| | |and EDITING END
DISPLAY: |
Arcplot: 2. ANALYSE and |
PRESENTATION |
Figure 7: Program organisation of UQUADO
The most important function of UQUADO is the
generation of profiles of the environmental quality
Figure 8: Options menu for the profile display
526
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996
