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Geographic data sets are often very large in size. Interactive visualization of such data at all scales is not easy because of the limited resolution of the monitors and inability of visualization applications to handle the volume of data. This is especially true for large vector datasets. The end user's experience is frequently unsatisfactory when exploring such data over the Web using a naive application...
A variety of free, open source GIS tools is now available for geo-related processing. The Web processing service (WPS) uses Web service technology for spatial calculations or easy access to models on the Internet in contrast to traditional geospatial processing, which is standalone, inefficient and often requires purchase of expensive software. A number of standards-compliant geospatial Web services...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.