HOW TO IMPORT DATA TO SOBEK Created by: Vu Minh Tue National University of Singapore With help of Nguyen Hoang Huy Team blue RED TEAM INCHEON 2008

Objectives In order to import network data (manholes, pipes, nodes) to SOBEK, MOUSE has been used as an intermediate model that imports data from excel file and exports to Svk19 (Scandinavian Exchange Format ), which is the importable file for SOBEK

INPUT FILES: Excel file: “Import data into MOUSE” from Hydroasia website Cross-section file: provided “Incheon_CRS.MEX” Please refer to the “Import_to_MOUSE.ppt” to know how to import data into MOUSE

PROCEDURE After importing data to MOUSE Project\Export…\Export text files and choose option: “GeometryTXT(svk19)” Press “Execute” and choose the name to export. For example: “Incheon.txt” Done, now you no longer use MOUSE anymore!!! Close it

PROCEDURE Open SOBEK and choose New Project Enter name: ex “Incheon” Choose Case\New\ then 3 blocks will appear in yellow This manual only deals with the block “import network” Double click on “import network”

PROCEDURE Choose option “Import Suf-HYD” network and press OK Keep the default value in the table

PROCEDURE Browse to the file exported in Svk19 format “Incheon.txt” and press OK. Click No for HGF requirement Select blank for the District code, and press OK

PROCEDURE Importing DONE Not difficult? Not yet… come on to experience our problem

PROBLEMS Thing is not easy with the stubborn input file and so is this case. After finishing importing data to Sobek, we realize that there are some problems with the network data: –Some nodes are not connected in order –The storage and bottom area for manholes have default value, i.e 100 and it’s very difficult to input those values for more than 2600 nodes manually.

PROBLEMS - Analysed Problems are analysed and finally we figure out that all the faults are blamed for MOUSE. Since when MOUSE exports data to Svk19 format, the Node IDs are limited to 7 characters only. If the node ID’s name exceeds 7 characters then it will be taken out the first 7 characters from that long name i.e: PM => PM02186

PROBLEMS - Analysed So there will be some nodes having the same IDs. Whilst the links are kept unchanged, the links will connect to wrong nodes. => First problem solved.

PROBLEMS - Analysed Second problem is the default storage area for all manhole. The task block import Suf-HYD does not provide us any option to import storage area to manholes, so we need to do it manually or by programming. Here, I write some small codes to do it. Thanks to God that Sobek has an option to copy and paste tabular data and here we go. The platform using is excel

PROBLEMS – Input file From the excel file “Import data into Mouse”, change the name for the whole workbook (3 sheets: catchment, node and link) with following criterias: –PM0xxxxxx  axxxxxx –M0xxxxxx  bxxxxxx –M1xxxxxx  cxxxxxx By doing this, all the Node IDs will have maximum 7 characters and will not be cut when exporting to svk19 file

PROBLEMS - Import Now the input file is created. Do import this file into MOUSE and export to SVK19 file. Using Sobek to import this file. The network now is the best with perfect links and nodes.

PROBLEMS – Storage area In order to match the area in catchment tab in excel file with the storage area of the manhole in Sobek, we use a simple macro code, written by me. This module can be downloaded from this link:

PROBLEMS – Storage area Open a blank excel file, go to: Tool\Macro\Visual Basic Editor The Microsoft Visual Basic window appears Select File\Import File and browse to the downloaded module. Close this window.

PROBLEMS – Storage area Open Sobek and open the netter of Incheon region. Select\Select by rectangle Drag the cross pointer to surround all the network. Right click at the selected area and choose Model data\Flow model

PROBLEMS – Storage area -Multiple Data editor window appears -On the left panel of the window, select from the tree: Flow-Manhole with runoff\Manhole Click on ID, the whole table is selected press Edit\Copy

PROBLEMS – Storage area -Now the data in this table is copied. -Paste to excel -In the “import data to MOUSE.xls”, choose tab catchment -List the value of “LOCATION” column in AtoZ order -Copy all the data in this worksheet -Paste to cells (K,6) on the same worksheet that was pasted the data from Sobek -And ??? What do we do. Let’s see the most important part

PROBLEMS – Storage area -Sample is displayed below:

PROBLEMS – Storage area -Select Tool\Macro\Macro -PERSONAL.xls!Incheon_couple_Sobek_ MOUSE -Wait for 1 minute for the program to run -The result will appear in column J. -Note that result is in “ha”, you will need to multiply this value with 10,000 to convert to m 2. -Copy this column and paste back to the table in Sobek.

PROBLEMS – Storage area -The sample of the final file is also uploaded to our webpage. Come and download it at: -

All thing done, phew!!! Good luck