Importing Topographical Information
Paolo Rossi's Topography Tools has the ability to import topo survey data in .xyz files. These are standard ASCII text files with five columns of data in CSV (comma separated value) files.
Import and Export ASCII Survey Coordinates
Import and Export ASCII Survey Coordinates to PowerCADD Import and Export menus to handle the import and export of total station coordinates. These handle topo point objects in TopoTools and Topography Tools and use the U.S. standard NEZ and European standard XYZ format.
The files are comma-separated-value (CSV) text files with five fields for item number, X, Y, Z and description. Item number and description are optional, but there must still be five fields, even if these two are empty. As an example of the contents of the file:
To Import ASCII Survey Coordinates:
To help you check things, the first ten points are traced with an orange polygon with a round arrow at the start of the polygon.
If you have Topography Tools, please continue to use the included Import XYZ file capability, which is similar to this and which offers more options.
At this time. Import ASCII Survey Coordinates is a work-in-progress and may need more work in dealing with objects that will not fit on the page and setting a global origin to match the imported points.
Inport GPX and Import KML
GPX and KML files are the two most commonly used file formats for GPS coordinates, and they are produced by many iPhone apps such as GPS Kit, EveryTrail Pro and myTracks. There is also a Mac app for myTracks in the Mac App store. It's an inexpensive program, and you can bring any of these types of files into the program.
These two commands open the files and create a polygon that is placed in the drawing. If the polygon is too big to fit on the drawing, then a new layer is created with a custom scale that is sufficient to handle the objects, which can be very large. In this case because of the change in scale, the polygon is red to alert you to the problem. If the polygon fits on the drawing, then it will be in the Normal line style of Style Tools.
There is a minor problem that these importers will not work if you have an 16-bit unicode character in the file name or anywhere in the file path. If the importers will not open the files, look to see if you have such a character anywhere in the file chain and eliminate it. Or just move the file to the root directory of the computer.
These file formats include the Z height. While these two import functions read the Z heights from the files, they do not yet place objects in the drawing with the Z height. This can be done, but it creates a messy display with all the topo point objects, and it's questionable whether this is of any use.
The KML file will handle multi-geometry tracks, but these are not yet handled by Import KML.
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