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Western I ndonesia National Roads I mprovement Project 25
6.7.1 WebGIS 1. What is WebGIS?
Website Geographic Information System WebGIS is a web-based information system that can collect, store, process, manage, and displaying spatial data into
thematic maps that related to highways. The thematic maps and other project information then overlayed in the Google Maps. And users can accessed it on
internet with URL http:gis.winrip-ibrd.com.
2. Objectives
• To trace the highways alignment to conform with Detailed Engineering Design
DED. •
Displaying location and others project information on maps that is more easily seen and understood by users.
• Knowing natural and geographical conditions around highways like rivers,
forests, mangroves and beaches that have an impact on highways. So that it requires the construction of bridges, retaining landslides and abrasion.
• Knowing highways have crossed over the protection forest area that needs a
feasibility study of environmental impacts. •
Knowing social conditions of communities and settlements around highways for preliminary information in land acquisition activities.
3. GIS Concept
Data sources for GIS derived from images data, field data, field survey, socio- economic maps, and GPS Global Positioning System. All further processed and
analyzed with specific software as needed to produce output of the thematic maps.
GIS comprised of 2 types of data, namely:
1. Spatial data, ie the data that pertaining to spatial aspects such as
geographical conditions on surface of earth. Generally in form of geographical maps in a digital format that has coordinates x, y and z.
2. Non-spatial data, ie attribute data that is related to characteristics and
descriptions of geographical objects. For examples: street name, roads length and elevation, place name and others project information.
To design and process maps, we used popular GIS software like MapInfo or ArcGIS. These software server as a tool to visualize, explore and analyze spatial data and
non-spatial data into a thematic map. This thematic map is then displayed on website.
Monthly Progress Report September 2013
Western I ndonesia National Roads I mprovement Project 26
4. Spatial Data and Layers
Spatial and non-spatial data that use in WebGIS application is divided into several layers as follows:
•
Highways Alignment Outline polygons that displaying highways alignment of the WINRIP project. Red
lines for packages of AWP 1, orange lines for packages of AWP 2 and yellow lines for packages of AWP 3.
•
Protection Forests Shape polygons that displaying the protected forest areas on the Sumatra island.
•
Floods Shape polygons that represent areas of potential flood affected on the Sumatra
island.
•
Landslides Shape polygons that represent areas of landslides on the Sumatra island.
•
Project Information Attribute data of project such as package number, length of roads, procurement
method and cost estimates.
•
Physical Progress Photo Photos that shows of physical progress of each package in the field.
•
Physical Progress Chart Charts that shows of physical progress of each package in the field.
•
Financial Progress Chart Charts that shows of financial progress of each package.
5. Technical Information
• Base Map, is the base map as a place to put all of maps and information.
Here we use the Google Maps as a base map of WebGIS application. •
Maps Framework, is a server machine where to process map using Google Maps Engine.
• Integration with WINRIP Website, WebGIS applications will embedded in
WINRIP website that users can easily to remember and accessing the application.
