Overview |
Crop Production |
Crop Pattern |
Crop Yield |
Irrigation |
Soil Management | Precision Farming |
Relevant Products |
Relevant Links
Interactive online mapping with XML for agriculture information system at district level These conversion scripts begin with Base theme, AxioMap creates layers.xml, a.xml and g.js files in the selected folder and the files are written by the conversion script into .xml files. The themes in ArcView required to be opened as .shp files, the scripts in AxioMap supports only .shp files for conversion to XML files. While reading a file from a remote server into the AxioMap map, one needs to enable data access across domains in Internet Explorer 5. From the IE5 pull-down menu, select Tools – Internet Options – Security – Custom Level. Scroll down to “Miscellaneous” and Enable “Access data sources across domains” (by default, this option is disabled). To publish desired map(s) on the Internet/Intranet, simply upload map folder (or several folders) along with the axiom folder, to a web server. The axiom folder, and folders containing all maps, is next to each other on the same level of hierarchy. To publish the application on the web, a URL consisting main.htm loads the AxioMap viewer with the base theme selected. This viewer consists two frames, left frame is utilised for Map navigation, and right panel is used for presenting map. Development of Agriculture Information The thematic mapping of the soil characteristics such as Land capability, Soil depth, Land irrigability, Soil texture and Agriculture chemical thematic maps such as soil solution, nutrient status such as macronutrients (Nitrogen, Phosphorous and Potassium) micronutrients (Zinc and Iron) were obtained from Department of Agriculture. Hyderabad, AP. The attribute data pertaining to all the parameters were also obtained for integration with the spatial (thematic) data. The topographical sheets in the scale of 1; 250,000 with the indexes numbering 56 G, 56 H, 56 K, 56 L, 56 P, 57 E and 57 I were obtained from Survey of India. These maps were scanned using DeskPro scanner in a single view, later saved as JPEG file. The images were available in Raster format. The image in the raster format is imported to AutoCAD software; p-line (poly-line) function available in the software is utilised for converting the raster format to vector format. The vector format of the image in the AutoCAD is saved as a .dwg file. This file was transformed to convert the .dwg file to .dfx format; this is suitable for importing the data into PC – Arc/Info. Errors were eliminated in the case of over-shooting, under-shooting of the lines and also the spikes caused during digitisation process with the help of editing functions. Clean and build commands or functions were run on this file to build topology: hence the relationships of the spatial data types were established.  Fig 6: The AxioMap 0.9 extension pull-down menu in ArcView Creation of Spatial Data The digital database of the Mahboob Nagar was created after performing the editing operations. The geographic locations of the Mandal divisions were of type nominal data comprising point data corresponding table was point attribute table. Division boundaries were classified as polygons. The adjacency relationships for 15 Mandal divisions were established for all division boundaries. The software creates Arc Attribute Table, Polygon Attribute Table and Point Attribute Table. The data was exported to generate .e00 format to enable the file to import into ArcView. All the spatial data for the purpose of Agricultural Information were scanned, digitised and built to generate topology as explained earlier. Storage Media The disk drive for the map generator was taken necessary care in order have sufficient space to hold input and output data for the predetermined locations. Creation of Database Model The database files that were generated to be classified according to the range and extent of the characteristics of parameters. The attribute data required to be integrated with the spatial data, for developing a well-versed GIS model. The Department of Agriculture had collected the all types of attribute data, and classified the attribute data by grouping the values. The characteristic features of spatial data linked to the spatial or geographical locations of the District map. |