Changes between Version 13 and Version 14 of Processing/TerrascanTips


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Timestamp:
Nov 3, 2008 1:12:04 PM (11 years ago)
Author:
mark1
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  • Processing/TerrascanTips

    v13 v14  
    2222
    2323The main steps to set up a Macro are to select tools -> Macro.  Then classify "from any -> default" to get everything the same classification. Then "default -> low (group)", "default -> low (single)" and then classify isolated points "any -> low". This should classify all the overtly noisy points to low points. Test the macro at this stage and see if it is classifying correctly. If so, add the ground classification to the macro, "default -> ground" and re-test the macro. This is the basic ground classification macro.  Save it to a file for future re-use.
     24
     25=== Creating Projects in TerraScan ===
     26''This is untested as of yet''
     27Projects in TerraScan are useful for showing trajectories and splitting/combining LAS files.  It is often easier to use a project when processing large quantities of data. To create a new project select the option from the toolbar ''(looks like offset stacked rectangles)''.  Then file->new. Select LAS storage, scanner airborne and give it a description.  Blocks can be used/placed which allows the data to be split up into sections. When placing blocks try to get an even amount of data in each one, and make sure they are flush together so that no data is ignored. Blocks can be automatically generated when importing the data. Select File->import points to project. Macros can be run on the data to classify it, the macro can run on all blocks or just a selection of blocks. The results can either overwrite the previous data or new copies made.
     28
     29WARNING Projects appear to stay in the Microstation design files. So if you are going to make a new project, copy the design file first.