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| Keywords | |
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MapServer |
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PostgreSQL |
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PostGIS |
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Open source |
| Authors | |
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MENG Hua |
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CHEN Sheng-Bo |
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ZHANG Dong |
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LIU Yan |
| PubMed | |
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Article by Meng, H. |
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Article by Chen, S. B. |
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Article by Zhang, D. |
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Article by Liu, Y. |
��esearch on publishing geographic information based on open source MapServer
MENG Hua, CHEN Sheng-Bo, ZHANG Dong, LIU Yan
College of Geo-exploration Science and Technology��Jilin University��Changchun 130026��China
WebGIS can publish geographic information on the network and achieve the operation of geographic information�� In face of the current major problems of WebGIS��this paper proposes a construction method (geo-graphic information publishing system) based on open source MapServer and PostgreSQL (PostGIS) according to the present situations of WebGIS and trend of WebGIS development�� Through the description and configuration of Mapfile��regarding the open source spatial database PostgreSQL (PostGIS) as the data source��the paper achieves geographic information publishing which based on the open source MapServer�� Conclusions showed that MapServer and PostgreSQL (PostGIS) can build an open source geographic information publishing system�� By logical expression of changes of Mapfile attributes��the hierarchical surface features display can be shown at different scales�� The number of layers has a significant effect on the performance of the system��especially when the number is greater than 100�� It is effective to improve the system performance by reducing the number of layer��