SMT201 AY2019-20G2 Ex1 FOO CHUAN GENG

Part 1: Thematic Mapping

• Distribution of public education institution

I have use the code provided by our coursemate to plot the school data points as using mmqgis will result in missing data points
Classified the data according to its school types, which each data points having a unique symbol ...

• Hierarchy of road network system

I classify the road network according to its road types , there are 3 different road types differentiated by different colours

• 2014 Master Plan Landuse

I categorize the map based on the Land Usage , initially i wanted to group the attributes with common words , but i feel that those attributes may meant different operations to the planner
e.g. Buisness 1 , Buisness 1 - White, Business 2

Part 2: Choropleth Mapping

• Aged population (+65) in 2010 and 2018

For both maps, there is a large number of aged population in the east side of Singapore as the darker the colours , the more the ageing population
There is also an increasing number of aged population from 2010 - 2018

• Proportional of aged population in 2010 and 2018

The proportion of aged population is more spreaded out across Singapore
There is also an increasing number of aged proportion from 2010 - 2018

• Percentage change of aged population between 2010 and 2018

• Discussion

For the data for age population 2010 & 2018 , a lot of data cleaning is involve, i reference the data layout in excel with one of the take home exercise where we are given the age population excel data set . One of the challenge that I face that the column for all the values are recognize by qgis as string format due to it having a comma e.g. '1,200', once i change the column properties to make it 'general' e.g. '1200', qgis recognize it as integer / double which solves the problem.
For Aged population (+65) in 2010 and 2018, I added the columns from 60-65 till 85 & over.
For Proportional of aged population in 2010 and 2018, I use Aged population (+65) / The total age columns * 100 to get the percentage
For the percentage change of age population 2010 & 2018, I joined the shape file of 2008 and 2014 Master Plan , and also the excel file of 2010 and 2018 to calculate the percentage change.