Analisis peringkat lokasi potensial taman Kota Depok di tingkat kecamatan menggunakan sistem informasi geografis dan topsis

Abstract

This article provides rank alternatives of 113 potential urban park locations at sub-district level in Depok Municipality. These potential locations were selected because they have areas between ≥24.000 m 2 and <144.000 m 2 based on urban park classification in sub-district level. Three spatial criteria in form of vector datasets, namely road length, potential green open space (GOS) and park area were processed using Geographic Information System (GIS) and then weighted using ranking method. In every column of each location within spatial attribute table, those 3 criteria were processed to provide positive ideal (r +) and negative ideal (r-) solutions using Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) method. These solutions were computed to generate the relative closeness (c i +) of each location. When input into TOPSIS, road length and GOS status were classified as benefit indices while park area as cost indices. Results show the first rank has c i + 0.83, while lowest rank has c i + 0.039. For assessment of TOPSIS results' performance, the demand for park total unit and area for every sub-district were computed from predicted population of 2030 and 2040. Simulated urban park development percentage from TOPSIS results were classified into 3 scenarios, namely scenario I (100% development), scenario II (50%) and scenario III (10%). It can be concluded that scenario I successfully meet the urban park area demand in 2040 for every sub-district. Moreover, scenario I sufficiently serve park unit demand in 8 sub-districts equal to 72.72% of the whole sub-districts in Depok Municipality.