Huíla: region in Angola
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 Huíla, Angola on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Huíla as of 2014, the overall level of street-network sprawl is 3.58, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 2.88, 4.22, 4.51 and 3.36. Street construction in Huíla increased in disconnectivity initially but has since improved. The streets constructed in 1991-2000 were the most disconnected.
Quantity of street network construction: The street network in Huíla spans a total of 5416 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 3.36, 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 2.88, 3.76, 3.85 and 3.58. The aggregate street network in Huíla increased in disconnectivity initially,but the trend has turned around after 2000.
The level of street-network sprawl in new development in Huíla peaked in 1991-2000. To get a sense of how street development has changed in Huíla, we can consider three of its most populous cities: Lubango, Matala and Chibia. Out of the three cities, Matala and Chibia do not follow the same trend as the region. The level of street-network sprawl in new development in Matala followed a zig-zag trend. The level of street-network sprawl in new development in Chibia followed a zig-zag trend.
How do development practices in Huíla fare in comparison to others in Angola? Most recently in 2001-2014, street construction in Huíla was the 12th-most disconnected out of the 18 regions in Angola. Its position in the ranks since 1975 has fallen; relative to other regions in Angola, street construction in Huíla has become more connected. Huíla ranked 9th in 1975, 3rd in 1976-1990, 6th in 1991-2000 and 12th in 2001-2014.
As of 2014, the city with the most disconnected street network in Huíla is Quipungo with an SNDi of 4.49, which is highly disconnected. Conversely, the most connected city is Caluquembe with an SNDi of -0.99, which is very well-connected. See trends for these cities: Caluquembe, Quipungo
The level of street-network sprawl in the aggregate network in Huíla peaked in 1991-2000. To get a sense of how the aggregate street network has changed in Huíla, we can consider three of its most populous cities: Lubango, Matala and Chibia. Out of the three cities, Matala and Chibia do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Matala followed a zig-zag trend. The level of street-network sprawl in the aggregate network in Chibia followed a zig-zag trend.
To date, Huíla is the 8th-most disconnected out of the 18 regions in Angola. Its position in the ranks since 1975 has risen; relative to other regions in Angola, the street network in Huíla has become more disconnected. Huíla ranked 9th in 1975, 5th in 1976-1990, 6th in 1991-2000 and 8th in 2001-2014.