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Data to Design: Good Design Requires Accurate Base Maps 7 Jan, 2009 By:, You have just won the latest infrastructure project and can't wait to get started with the design. But first, you must prepare the existing conditions base map.
A complete, accurate base map is critical to the success of your project. The project team will need to research and include the usual existing condition boundaries, easements, and topographic, hydrologic, and infrastructure features. And, with today's safety, environmental, and sustainable design requirements, you will also have a wealth of other robust data that must also be included. Including all of this often disparate data into your project base map can be a cumbersome experience, and when your base map is constructed with different data types, such as GIS, survey, imagery, tabular, and even legacy hard copy items, this can sometimes take more time than the actual design itself! Today vast amounts of robust data are available for our use. However, most CAD systems are not able to easily consume and directly use these data types in their CAD-based drawings.
Many engineering professionals face the challenge of taking a CD full of CAD, GIS, survey, imagery, and miscellaneous project-related data and compiling it in order to get a base map prepared in time for a meeting with only a day's notice. Tomtom Maps Uk Rapidshare. With the incredible amount of data available today in a variety of formats, the challenge is to get that data into your CAD base map drawing as accurately and easily as possible.
Data conversion, coordinate system reprojection, and drawing cleanup can make this task laborious and time consuming. This article outlines how to use AutoCAD Map 3D 2009 to bring disparate data into drawings through its Feature Data Objects (FDO) data connection and how to use Map 3D’s built-in drawing cleanup tools to best prepare data for the design process. Removing the Road Blocks With Map 3D’s FDO connection, you can connect to all the different data types (such as SHP, SDF, JPG, MrSID, DEM, and point list files) for use in the base map drawing. FDO allows users to quickly gather information, such as center lines of roads, parcel boundaries, control benchmarks, soil types, zoning limits, contours, and high-resolution aerial photos. Standard connection types include SDE, Oracle Spatial, raster (MrSID, GeoTiffs), WFS (web feature service) and WMS (web mapping service), as well as ODBC, MySQL, and SQL server.
The FDO data connection tool is accessible from the docked Task Pane. Once loaded, the data can be symbolized and queried for display in the map model window. The Style Editor allows the data to be labeled, symbolized, and themed by any of the attributes that are associated with it. Use the FDO connection in AutoCAD Map 3D to bring together disparate data types. Working with Coordinates When working with CAD systems, all the data must be in the same projection and coordinate system or it simply will not overlay correctly. Often the imagery, engineering, and GIS data are in different coordinate systems and even in different units.
For example, the images might be in Universal Transverse Mercator (UTM), the engineering data in state plane coordinates, and the GIS data in a WGS latitude and longitude system. Allison And Lillia Download Sub Indo 3gp here. Units must also be consistent. Systems may be in meters, U.S. Survey feet, international feet, or some other unit.