The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008
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» FD : Form
ObiecUDj g
StruNo j J Ï 3803
StiuType]CBNS
LidSize 130x19-30
LidType JST Yearlnstalled j 9999 Owner j Public drainage
InvDeep j3'3"
InvType j INVERT CntPipe j
Pipelnv PipeMat PipeS hp
3 Condition jGOOD
PipeS ize1. PipeS ize2
EndNol jj 13802
|3'3" jCMP
JCR
16|
EndNo2 |j 13801
[jf 1 jCMP
|CR T
28|
EndNo3 |j 131005
¡3'3" |CMP
|CR j
28]
EndNo4 j 1 1 1 1 J
EndNo5 1 [ "] 1 j ]
EndNo6 j ~| j j 1 1
Comment j
SurveyDate | 5/21 /2007
Figure 6. The Interface of Editing Field Data in MS Access
Linking GPS Data/Calculate Elevation: This is a key module
f the SWDUS. If the GPS data can not link with Storm water
attribute data, the entire process will not function. So keeping
both data linked together is very important. In practice, the
storm water team measures the storm water attribute data first,
and writes down each structure number on the lid of the
structure, so that the survey team can use the same structure
number. In case of a mistake intransercting or detected, it can
be discovered during data linking. Misnumbered structures will
show as unlinked members. Correcting the unlinked number
based on the SW pipe connection, then link again until fully
linked. Therefore, merging all SW field data together and
making sure both of SW data and GPS data have same records
is very crucial section in the preparation. The link interface is
shown in Figure 7.
Figure 7. The Interface of Linking SW Data with GPS Data
Creating Structure/Pipe Layers: This module is performed
automatically in the SWDUS. It includes some tests and
judgment functions to verify if the data is ready to generate
structure and pipe layers. If the data is not ready, some help
messages will be given, which ensures the correctness of new
feature generation. It takes less than a minute to create about
thousand records of structure and pipe layers. In the structure
type, unfound structures are called out as LOST. After the pipe
layer is created, the LOST structure numbers are listed for user
to verify (see Figure. 8).
ArcMap
«13260 «=143700 «=13249 «=13251 «=14249 «=13265 «13270 «=13282 «139999 «139999 «13300 «143656 «147011 «147009
«14363? «147029 «143641 «149999 «1499» «143637 «13149 «14600 «13110.5 «13111 «12791 «12999 «12765 «12755
«12740 «12805 «12805 «12755 «12761.3 «12836 «12110 «12798 «12798 «12776.1 «12761 «12761 «12761.3 «12755
Figure 8. The List of All the LOSTs.
Connecting Existing Data: Connecting Existing Data is a main
module in the SWDUS. Our goal is using new collected or
edited data to replace the existing data. At our current pace (2
persons collect SW attribute data), updating city wide data will
take 5 years, thus, we plan on creating new structure and pipe
layers based on the collected data, then connecting the portion
of updated data with the existing data to keep the mapping in
use. Therefore, how do we effectively connect existing data
becomes a key part of the SWDUS. This module was realized
by a personal-computer alternate method. First, the system finds
a structure that has a LOST designation to create a new pipe,
zoom in the area shown in figure 9(a), and display the
connecting interface for the selecting feature (see figure 10).
The LOST structure could be one in the existing structure,
existing pipe, CN data, new structure, new pipe, segment a new
pipe or a new point. Then the user will use the “Select” tool bar
(see figure 11) to highlight where the LOST is in the screen,
which is shown in figure 9(b). Finally, the user can click the
“Connect” tool bar (see figure 11), to generate the new pipe,
which is shown in figure 9(c).
Figure 9. The Process of Connecting Existing Data.
(a) Zoom in the Area for Selecting LOST;
(b) Highlight the Existing Pipe;
(c) The Connecting Result
Figure 10. The Interface of Connecting Existing Data
LOSTJJo
Select
New_Pnt
Connect
Edit
Start
Image
Figure 11. The Tool Bar of SWDUS
