Citation
Abdullah Daud, . and Taher Buyong, . (1995) Developing digital cadastral databases for GIS : the conjugate gradient method. [Proceedings Paper]
Abstract
In theory the problem of maintaining the geometrical quality of a digital cadastral database can be solved if measurements are used instead of coordinates as the source data. This approach requires a very efficient method solving the large amount of measurements in cadastral work. Currently the most popular method of adjustment is the least squares technique which invariably involve the solution of normal equtions by Cholesky decomposition method. This paper describe a method of solving and optimizing the least squares adjustment by a method known as conjugate gradient. This is a unique approach. It does not require the formation of normal equation but it solve directly the observation equations for the unknown. This paper highlights the advantages of the conjugate gradient method and some preliminary results is presented.
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Abstract
In theory the problem of maintaining the geometrical quality of a digital cadastral database can be solved if measurements are used instead of coordinates as the source data. This approach requires a very efficient method solving the large amount of measurements in cadastral work. Currently the most popular method of adjustment is the least squares technique which invariably involve the solution of normal equtions by Cholesky decomposition method. This paper describe a method of solving and optimizing the least squares adjustment by a method known as conjugate gradient. This is a unique approach. It does not require the formation of normal equation but it solve directly the observation equations for the unknown. This paper highlights the advantages of the conjugate gradient method and some preliminary results is presented.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. G70.5 A7S471 1995 Call Number |
| AGROVOC Term: | CADASTRES |
| AGROVOC Term: | SURVEYS |
| AGROVOC Term: | DATABASES |
| AGROVOC Term: | GEOGRAPHICAL INFORMATION SYSTEMS |
| AGROVOC Term: | METHODS |
| AGROVOC Term: | REMOTE SENSING |
| AGROVOC Term: | MALAYSIA |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:13 |
| URI: | http://webagris.upm.edu.my/id/eprint/10939 |
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