Tag: coordinate

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Development of Web-Based Application for Shapefile Coordinate System Conversion for Malaysia

By Elysonia Alim
Supervised by Dr. Shahabuddin Amerudin
UTM Undergraduate Thesis Year 2018
It is difficult to process GIS vector data when they are not aligned with one another. The need for different coordinate systems rose from the fact that some coordinate systems are better fitted to describe the phenomenon happening in a specific area. However, even commercial software had been proven to have questionable accuracy in coordinate system conversions. The purpose of this study is to develop a web application capable of converting the coordinate system of a GIS data format such as a shapefile for Peninsular Malaysia. The web application named Coordinate Conversion Application (CCA v1.1) was developed using Django 2.0 with Python 3.6 and is capable of 5 coordinate transformations namely WGS84 to GDM2000 (forward and backward), WGS84 to MRSO (old) (forward only), MRSO (old) to Cassini (old) (forward and backward). Results obtained were compared with existing software such as GDTS v4.01 and ArcGIS 10.3, and analysis shows that CCA v1.1 has achieved satisfactory accuracy

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Published in ACRS 2018

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Development of Web-Based Application for Shapefile Coordinate System Conversion for Malaysia


By Elysonia Alim and Shahabuddin Amerudin

It is difficult to process GIS vector data when they are not aligned with one another. The need for different coordinate systems rose from the fact that some coordinate systems are better fitted to describe the geographical phenomenon occurring in a specific area. However, even commercial software had been proven to have questionable accuracy in coordinate system conversions. The purpose of this study is to develop a web application capable of converting the coordinate system of a GIS data format such as a shapefile for Peninsular Malaysia. The web application named Coordinate Conversion Application (CCA v1.1) was developed using Django 2.0 with Python 3.6 and is capable of five-coordinate transformations namely WGS84 to GDM2000 (forward and backward), WGS84 to MRSO (old) (forward only), MRSO (old) to Cassini (old) (forward and backward). Results obtained were compared with existing software such as GDTS v4.01 and ArcGIS 10.3, and analysis shows that CCA v1.1 has achieved satisfactory accuracy.

Published in Proceedings Asian Conference on Remote Sensing ACRS 2018 pg. 449

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Development of Web-Based Application for GIS Data Format Coordinate System Conversion

By Elysonia Alim and Shahabuddin Amerudin (Supervisor)

Unpublished 2018 4th Year Undergraduate Project’s Technical Paper

It is difficult to process GIS vector data when they are not aligned with one another. The need for different coordinate systems rose from the fact that some coordinate systems are better fitted to describe the phenomenon happening in a specific area. The purpose of this study is to develop a web application capable of converting the coordinate system of a GIS data format such as a shapefile for Peninsular Malaysia. The web application named Coordinate Conversion Application (CCA) was developed using Django and Python and is capable of 5 coordinate transformations namely WGS84 to GDM2000 and vice versa, WGS84 to MRSO (old), MRSO (old) to Cassini (old) and vice versa. Results obtained were compared with existing software such as GDTS and ArcGIS, and analysis shows that CCA has achieved satisfactory accuracy.

Download Unpublished Technical Paper

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Malaysia MIF Format Coordinate Conversion Tool

MIF Coordinate Conversion Tool

By Shahabuddin Amerudin

A Valuable Tool for Geospatial Data Conversion

The MIF Coordinate Conversion 2001 tool has proven to be invaluable for geospatial professionals working with MapInfo data in MIF format. This application enables seamless conversion between various coordinate systems, including WGS84, RSO and  State Cassini. The conversions are executed with exceptional precision, ensuring accurate and reliable results.

A History of Development and Use

Originally developed in Microsoft Visual Basic Version 6 in the late 1990s, this tool has undergone continuous improvements over the years to enhance its functionality and performance. Its significance was particularly evident during my academic pursuits at UTM, where it played a crucial role in my Final Year Project (PSM).

Application in Geospatial Research

My PSM project focused on the impact of using multi-data sources in GIS databases from different coordinate systems. Given the limitations of GPS technology at the time, including Selective Availability (SA), the collected GPS data required correction using Differential GPS (DGPS) techniques. The MIF Coordinate Conversion tool was instrumental in this process.

One of the key aspects of the project was evaluating the effectiveness of DGPS in a scenario where the GPS base station was located in Kuala Lumpur and the rover was in Johor Bahru. This study highlighted the challenges of real-time coordinate transformations in GIS software at that time. Many GIS packages struggled to perform accurate conversions due to incorrect parameter usage and unfamiliar transformation formulas.

Conclusion

The MIF Coordinate Conversion 2001 tool has been a valuable asset for geospatial professionals, especially during a time when real-time coordinate transformations were limited. Its ability to accurately convert between various coordinate systems has contributed significantly to the advancement of geospatial analysis and research.