Is it possible to create location boundaries long an alignment from station & offset data
Base on the data below - or is there another works around for a large data set
Thanks in advance for any help
Thanks, James found a workaround
1.Create offset strings
2.Run an alignment offset reports against the required chainage (at the required intervals)
3. Export CH / OFFSET & EASTING NORTHING to EXCEL
4. IN EXCEL copy and past into sheet tabs
5. Build Summary Sheet with vlookup to find the required easting northing against chainage and offset required
5. Output results to PT, E,N,Z, Code
6. Import point file into TBC and process line work
I can't think of a way of doing this in TBC, however there is something very similar to this in the Trimble Access Roads module. TA Roads has an option called Additional points where you can key in or import points based on station and offset. Additional Points is accessed from the Define menu in Roads after select the Road (or Alignment) to edit. If importing from a CSV file, the format is:
Station, Offset, Elevation, Code
Once these point have been imported they can be staked out. For more details, please look up Addition Points in the help.
If you don't have TA Roads, it is possible to key in points into TA General Survey using Station and Offset relative to a line or alignment. However you can't import a CSV file using this option. You can only key in individual points.
You can do one of the following
1) use the creTe linestring command and then select station and offset input mode and then enter the station and offset values and that will create you a linestring that uses these values
2) create a corridor using the alignment and then create a single offset elevation instruction and then in that for offset use a table of station and offsets Copied and pasted from your table and then for elevations do a table and copy and paste the station and elevation data from your table into an elevation table. This will create a corridor surface with sections where you have table entries and then you can Explode that surface to create the lines you want
You can also create an excel spreadsheet with the following format
First line says TBC Excel
Second and subsequent lines read either
Point ID, Station,Offset, Elevation, Code or
Station offset elevation code
Save as a CSV file
You can then use the import command - it sees the CSV file checks the first line and if it sees TBC Excel it reads the data as a STATION offset file and asks for alignment and also whether your file has Point No or not.
This is a third way to import Station and Offset data from a spreadsheet
Hope this helps
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