Data build-up and transformation of cadastral data from different localplane coordinate system to PPCS-TM/PRS9
Caparas, Alexander et al.
This research aims to develop operational methodologies in integrating cadastral data into the Philippine Plane Coordinate System Transverse Mercator/ Philippine Reference System (PPCS-TM/PRS92) through evaluation of different methods of data conversion and transformation in five (5) municipal cadastres. The research was divided into four (4) major tasks each aimed to find effective methods in the area of cadastral data conversion from analogue to digital format; coordinate conversion; plane coordinate transformation and cadastral integration; and automation of cadastral data build-up. The execution of the developed methodologies for each of the tasks resulted in findings which includes quality issues in the cadastral data and survey of some approved cadastre which do not permit effective cadastral transformation; severity of problem in the cadastral data record system which causes damage and lost of cadastral survey records necessary for the data buildup, transformation, and integration; and difficulty of integrating adjacent cadastral projects caused by unreliable boundary monument positioning. On the other hand, this research also yielded effective methods and procedure for transforming and integrating cadastral data. The methodologies developed from this research which yielded the best results in terms of effectiveness and efficiency for cadastral data build-up and transformation were translated into procedural manual and guidelines.
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