Input module could read and convert any kinds of GIS space data, such as vector format data arcinfo SHP, mapinfo MIF, autocad DXF, etc. and grid format data BMP, TIF, JPEG, GIF, PCX, etc. It could also read and convert other database formats which are in common use. It can make data in different application environment to operate with each other, which establishes foundation for network data share in the future. Output module not only could export print text, figure and chart, but also form general GIS space formats and other database formats in common use.

Fig.2 Structure of Inner Mongolia TRMIS
Tourism resources information data, social data, economic data, natural resources and environmental data need to be renewed yearly. The system provides the convenient data operation and renewal function. Customers can add, delete, modify, edit data, they also can establish database and modify the structure of attribute database. This function guarantees the present situation of data information and reduces the redundancy data.

4.4 Information index and search
Function of information index and search is the essential function of IMTRMIS. The function of general information system limits to index and search of attribute information. While IMTRMIS could index and search attribute data and spatial data at the same time, realize the search and query between attribute information and spatial information and the accurate position of attribute information and spatial information.

There are place name information query, logic query, landscape information search, key words search and other related search in IMTRMIS. These search operations are very brief. The place name query includes all landscapes and name and quantity of basic tourism resources and spatial position of tourism resources and district that they belong to. Search fields, logic operation signs and field values constitute logic expression formula. For example, click name search button, the name dialogue window will flick on the system interface, input “forest ” on the dialogue, then click enter button ,you will find 19 matched records. Every matched record could be found in the control bar.

4.5 Graphics function
Graphics of IMTRIS are divided into gradate graphics and statistic graphics. Gradate graphics aims to operate on map. It sets up colors and signs of map. The fields of gradate graphics are region-id, area, perimeter and id, etc. Customers could select gradation and edit it. They could create individuation map with help text.

Statistic graphics utilize map database and attribute database to cartography. Selecting index from attribute database, with the help text we could make statistic charts on map correspond district, such as city tourism income schematics. Statistic graphics make statistic data relate with its map position, that favors attribute data analyze. IMTRMIS provides 36 categories of two-dimensional symbol and three-dimensional symbol, they are histogram, strip diagram, cake diagram, circle diagram, fan-shaped diagram, ball diagram, pyramid diagram and percent diagram, etc.

5. Conclusion
Tourism resources management information system is GIS application in tourism. It could offer information services for tourism plan supervisor, management department, researchers. Making use of TRMIS, We can quantitative analyze tourism problem and combine attribute information of tourism resources with their spatial position.

With development and application of technique about GIS, computer, GPS, RS, three-dimension, network and intelligent decision, TRMIS will develop at the direction of intelligence, network and multi-dimensions.

References

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