Selangor: region in Malaysia
What exactly constitutes the spatial extent of the city? For these aggregations, we used the Global Human Settlement Layer Urban Center Database (GHS-UCDB) to define the boundaries of the city. These cities -- or urban centers -- cover areas that are densely populated and built-up, and so may extend beyond the spatial borders of these cities that we may be familiar with. The GHS area is shaded in blue.
View Selangor, Malaysia on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Selangor as of 2014, the overall level of street-network sprawl is 4.72, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 4.64, nan, 5.16 and 5.66. Data was not available in 1976-1990.
Quantity of street network construction: The street network in Selangor spans a total of 24592 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 4.64, which is highly disconnected.
Effect on the aggregate network: New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 4.64, 4.64, 4.65 and 4.72. Overall, the SNDi of the aggregate street network has risen: the street network in Selangor has become more disconnected.
The level of street-network sprawl in new development in Selangor followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Selangor, we can consider two of its most populous cities: Rawang and Meru. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Rawang followed a zig-zag trend. The level of street-network sprawl in new development in Meru followed a zig-zag trend with an overall decrease.
How do development practices in Selangor fare in comparison to others in Malaysia? Most recently in 2001-2014, street construction in Selangor was the 6th-most disconnected out of the 13 regions in Malaysia. Its position in the ranks since 1975 has risen; relative to other regions in Malaysia, street construction in Selangor has become more disconnected. Selangor ranked 3rd in 1975, 7th in 1991-2000 and 6th in 2001-2014. There was no ranking in 1976-1990 due to unavailable data.
As of 2014, the city with the most disconnected street network in Selangor is Meru with an SNDi of 5.53, which is highly disconnected. Conversely, the most connected city is Rawang with an SNDi of 4.59, which is highly disconnected. See trends for these cities: Rawang, Meru
The level of street-network sprawl in the aggregate network in Selangor rose steadily. To get a sense of how the aggregate street network has changed in Selangor, we can consider two of its most populous cities: Rawang and Meru. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Rawang rose steadily. The level of street-network sprawl in the aggregate network in Meru fell steadily.
To date, Selangor is the 6th-most disconnected out of the 13 regions in Malaysia. Its position in the ranks since 1975 has fallen; relative to other regions in Malaysia, the street network in Selangor has become more connected. Selangor ranked 3rd in 1975, 4th in 1976-1990, 5th in 1991-2000 and 6th in 2001-2014.