CAD DXF格式转ESRI Shapefile：数据转换方法

1. CAD DXF格式 转ESRI shapefile

http://happysquirrel.com/index.php?feature=dxf2shp

此位牛人提供免费的在线转换。但是貌似没有源码。

用到的库是dxflib，c++开发，开放源代码。

自己抽空和 gdal  结合试着自己实现一个dxf2shp，文档说不用了解dxf文档的结构。按API行事即可。

dxflib库的开发文档：

http://www.ribbonsoft.com/dxflib/manual/overview.html

ogr的实现

ogr2ogr -f "ESRI Shapefile" C:\temp\contour.shp C:\temp\contour.dxf

would also suggest to use OGR but in only works with dwg/dxf version 2000 or prior; you could use Teigha (http://www.opendesign.com/) to convert the files to 2000 version and then you can   use OGR.

I've done tons of conversions from dwg to shp what I usualy do is convert the dwg to a dwg version 2000 using Teigha, then convert that dwg-200 to a shape file; once a shapefile you'll see that this file contains all the layer in order to separate each layer into a different shape file I use this command

ogr2ogr new_map_from_layer_X.shp -where "LAYER = 'X'" shape_converted_from_DWG_lines.shp

IBM:http://www.ibm.com/developerworks/opensource/library/os-autocad/index.html

2. shapefile转PDF

计划使用libharu pdf库实现一个完整的输出地图pdf工具。

小实验倒是已经完成。

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