SMT201 AY2019-20T1 EX1 Tan Wei Long Ryan

Part One: Thematic Mapping

Distribution of Public Education Institutions in Singapore

The map shown is a qualitative thematic map with point symbols.
The different public education institutions are symbolized by classifying them based on the institution’s education level, namely Junior College/Centralized Institutions, Mixed Level, Primary and Secondary and plotted on the coastal outline of Singapore.
A light grey fill is chosen for the coastal outline which allows the symbols on the map to stand out with their respective colours, allowing readers to easily see the distribution of the schools across the island.

Hierarchy of Road Network System in Singapore

The map shown is a qualitative thematic map of lines. According to a reference from LTA (refer to Fig. 1), there are 5 different categories of roads in Singapore, which can be inferred from the suffixes of their names. For example, Expressways will be named with Expressway, Parkway or Highway.

Fig. 1

An attribute, Road_Type was added into the attribute table of the layer, allowing each road to be classified based on its road type.
The different roads were plotted with contrasting coloured lines to allow users to visualize the hierarchy of the road network system easily.

2014 Master Plan Landuse

The map shown is a qualitative thematic map of areas.
The areas were classified based on their land use description, however due to having over 32 categories, similar categories were grouped under one colour on the map, such as purple for businesses and blue for water bodies and beach areas as having 32 different colours would make it difficult for the readers to identify features at glance.
Readers can see the types of categories that have been grouped together on the legend, preserving the original land use description provided in the master plan.

Part Two: Choropleth Mapping

Singapore's Aged Population (65+) in 2010

At first glance, we can tell that there is a larger amount of people from the aged population living in the east due to the darker shades of blue as shown on the choropleth map and the rest of the map having a whitish colour, indicating the presence of little to no aged population residing there. However, these whitish areas are uninhabitable, such as water catchment areas. Hence, the aged population in 2010 is quite evenly spread out, with a slightly higher concentration in the east

Singapore's Aged Population (65+) in 2018

Comparing this 2018 choropleth map with the 2010 choropleth map, we can tell from the legend that the amount of people in the aged population is growing as seen from the increase in the raw numbers of the 5 different classes. Additionally, there are new areas having a darker shade of blue across the map, signalling that there is an overall increase in the amount of people living in Singapore that are in this aged population group, and hence having an aging population.

Proportion of Singapore's Aged Population in 2010

123

Proportion of Singapore's Aged Population in 2018

123213

Percentage Change of Aged Population From 2010 to 2018

123213

Reasoning behind classification choices

123321

Derivation of new variables and handling of missing values

1231321

References and data sources

1. https://www.data.gov.sg/search?q=school+information
2. https://www.data.gov.sg/dataset/master-plan-2014-land-use
3. https://www.data.gov.sg/dataset/master-plan-2014-subzone-boundary-no-sea
4. https://www.lta.gov.sg/content/ltaweb/en/industry-matters/sale-of-plans-and-information/road-line-plan/road-line-plan-explanatory-notes.html
5. https://remembersingapore.org/2018/08/15/singapore-street-suffixes/
6. SMT201 elearn - Week 4 Hands on Ex 4 - Coastal Outline Shapefiles from SLA
7. https://www.mytransport.sg/content/mytransport/home/dataMall/search_datasets.html?searchText=road - Road Selection Line