I have some bathymetry data in TIN format; I am able to open this in arcmap and view the terrain. However I need to use this data within a simulation framework called Delft3D, which needs the bathymetry data in ascii format (.dep). I am very new to both of these software technologies, I wanted to know how I can convert the TIN format data to a .xyz file or even a .dep file using arcgis or even something external.
[GIS] TIN file to a POINT file
arcgis-desktoppointtin
Related Solutions
It has not. Only some geoprocessing is supported with Terrain Datasets. TIN should be used for with TIN Editing tools and most geo-processing
Simple method:
Rename the file(s) to csv or asc to see the tables (you may need to edit each one and add a header line), create a feature class from XY table (or make XY event layer) then perform a Point to Raster (your cellsize is 15 metres), this will give you a DEM. With the DEM run GDAL_Contour or Esri contour:
gdal_contour -i 10 D:\some_path\XYBQ30_04_01_2000_PointToRas1.img D:\some_path\XYBQ30_04_01_2000_Contour.shp
Better method (with extensions):
From the points created from the XY table create a Terrain and do your contours in Esri using Surface Contour (3d Analyst).
You can smooth out contours by resampling your data from 15m to say 5m using a bilinear method.
If you have a few to do you might be best to set your Snap Raster and Cell Size environments, this will ensure the cells line up. It is best to mosaic tiles together then clip out slightly more than you need as contours will end halfway through the last cell.
This is what I got from the tile:
Best Answer
If you have access to the 3D Analyst extension, this can be accomplished using the TIN Node tool found here: 3D Analyst Tools - Conversion - From TIN - TIN Node. This will create 3D points (i.e Z-enabled) at each triangle node that forms the TIN. Alternatively you could convert your TIN to a raster, and then use the Raster to Multipoint tool which will create points at each raster cell center (as opposed to the TIN nodes). This approach will give you more flexibility regarding the number of output points, as it will be based on the raster resolution which you can modify to fit your needs.
Once you have your point file, you can use the Feature Class Z to ASCII to get your desired output format.