Perbandingan Pemetaan Spatial Kepadatan Penduduk Pulau Pinang Menggunakan Kaedah Koroplet dan Dasimetrik
Comparing the Mapping on Density Spatial of Penang’s Population Using Choropleth and Dasymetric Techniques
Keywords:coropleth, dasymetric, Landsat 5 TM, population density mapping, GIS
The study was conducted to map the population density of Penang state through application of koroplet and dasimetric methods. Population census data in 2010 were used in this study. The population census data of Penang by the territory, namely 22 terrritories for Seberang Perai Tengah, 16 territories for Seberang Perai Utara and Seberang Perai Selatan, seven territories for the Northeast and 22 territories for Southwest. Land use for the state of Penang is also one of the important input data for the dasimetric method. Thus, land use in the state of Penang was created through the interpretation of Landsat satellite image in 2010 to eight types of land use, namely water bodies, forests, palm oil, recreational, paddy, mangroves, non-built up and open space. Population density mapping using the koroplet and dasimetric methods were implemented and it was found that the dasimetric method was seen to be more effective in describing the real situation in the field (Penang state) compared to the method of the koroplet represented by only one color in each polygon or territory involving dark colors (high density population) and faded colors (low density population). The result of the dasimetric mapping method shows that the distribution of the population is uneven even in the same territory or polygon. Generally, the dasimetric map produced the spatial distribution of population densities according to the suitability value of the dwelling based on the land use distribution.