I agree Shane, There is a lot more room for improvement of collecting and storage algorithms at the time of scan. I carried out an exercise a few months ago on a scan of a railway tunnel done with a P40 and ended up with a 73% reduction on number of points for no visible difference in the scan and no difference > 0.1mm on the delivered model. If you have co-planar points, or even co-linear points, very close to one another with similar intensity values there should be an option to discard them at time of scan. A high speed scanner that can collect a million or two million points a second is fine, but most of these points should never be stored. This, and how and when it is reduced is also an issue. For V7 DGN files, the default location is the lower-left or bottom-left corner of the coordinate space.Matt Young wrote: ↑ Thu 2:14 pmThe real problem I see is the amount of data being collected these days. For V8 DGN files, the default location is the exact center of the 2D design plane or 3D design cube. The global origin setting defines the location of the x, y, and z origin coordinates 0,0,0 relative to the file's coordinate space. Many organizations that require a specific global origin, provide DGN files as downloadable files from their website. Spatial data that falls outside the defined coordinate boundary is notĮxported to the drawing file. Global origin, working units, and the 2D (design plane) or 3D MicroStation seed files contain critical information about the drawing's Any nonzero value in the Min or Max text box indicates that the data is three-dimensional.
Click the Feature Extent tab and examine the values in the section labeled Z Extent. To determine if your input features are three-dimensional, right-click the feature class in a Catalog window and open the Feature Class Properties dialog box.
You can browse and choose from other seed files in the ArcToolbox templates folder (example: C:\Program Files\ArcGIS\Desktop 10.8\ArcToolbox\Templates). If the input features contain three-dimensional data, you must use a 3D seed file. By default, the Export To CAD tool selects a sample 2D seed file with units set to meters. MicroStation drawingsĪll MicroStation V8 drawings require a seed file. AutoCAD drawingsĪutoCAD formats do not require seed files to generate output. Any format specified by the Output Type setting is ignored. The results are similar to appending the input features to a copy of the seed file. If you need the CAD drawing to contain specific settings or other native base data, you can add a seed (CAD template) file as a secondary input. To enable the tool to overwrite existing CAD datasets, click Geoprocessing > Geoprocessing options on the Standard toolbar and check the box overwrite the outputs of geoprocessing operations. To overwrite existing CAD file, uncheck the Append to Existing Files check box. When this setting is unchecked, the file name specified in the Output File text box is ignored. This exports the input futures to the path and file names specified in each row of the feature class table. Uncheck the Ignore Paths in Tables check box if the input features have been modified to include the DocPath field in their respective tables. This exports all the input features to one CAD drawing and overrides any paths that may defined by the input features with the DocPath field.
To name the CAD drawing when you run the tool, type the full path and file name in the Output File text box and check the Ignore Paths in Tables check box. Navigate to the To CAD toolset in the Conversion toolbox.In a Search window, type Export To CAD and click the Tools filter.In a Catalog window, right-click the dataset or feature class and click Export > To CAD from the context menu.In a map document, right-click the layer in the table of contents and click Data > Export to CAD from the context menu.You can open the tool in the following ways: You can run the tool out of the box with the default parameters or you can customize the output to conform to specific CAD standards. Using the Export To CAD tool, you can export feature classes and shapefiles to AutoCAD and MicroStation formats.
Separate features with the DocPath fieldįor many organizations, design projects in CAD begin with base data generated from a GIS.