A new determination of regional area by utilizing rectangular approach method and google maps

Calculation of Central Java Province Region Area Using Shoelace Formula Based on the Gadm Database

“…A total of 168888 latitude and longitude coordinate points are needed to form the boundaries of the regencies / cities in the province. Based on BPS data, there are 573 districts and 8578 villages in Central Java, covering an area of 32800.60 km 2 .…”

“…of villages (1) Ref. area (2) 12 The application of shoelace formula on UTM coordinates give relatively better results than that of the Karney method. However, this formula can only be used for areas that are all located in the same UTM zone (such as the province of Central Java), and cannot easily be used for provinces whose areas have UTM zone boundaries such as West Java, East Java and Central Kalimantan provinces.…”

“…Applying the shoelace formula and the Karney polygon method on the outer boundaries of Semarang regency, the calculated area is 1221.97 km 2 and 1222.85 km 2 , respectively. Subtracting the area of the city of Salatiga which is 53.05 km 2 and 53.08 km 2 , respectively from that area, we get 1168.92 km 2 (23.02% greater than the reference area) and 1168.77 km 2 (23.00% greater than the reference area). The difference between the calculated area and the reference area becomes smaller when the boundaries of the district and village are used.…”

“…Genome-wide Various methods may be applied to determine the area on earth's surface, including the circular approach method [1], the rectangular method [2], the spherical quadratic approach method [3] and the polygon method proposed by Karney [4], [5]. The Karney polygon method is considered good for the purpose but is not an easy method to understand, while the circular approach method is a method that is easy to understand but gives unsatisfactory results.…”

Personalized Route Recommendation Method for Field Survey Officers using Social Media Information and Administrative Border Maps

“…One of the features provided to users is that users can create personal and custom maps according to their individual needs [11]. Google map itself have often been used in providing road or route recommendations for users [12] [13], used in planning the location of electric charging stations for electric-powered vehicles [14] determining agricultural locations with satellite imagery [15], minimizing accidents [14] [3], to classify children's health [16] and determine the location of water pipe damage [8]. However, the use of google maps for officers' route recommendations were very limited and in this research, we proposed a new mechanism that can be proposed for the survey officer to minimize error scope and other problems in field survey caused by a restriction in location or because PPKM.…”