I have an elevation dataset that is contour lines (lines). I have already made a TIN using this data, but for the life of me I can not figure out what arc toolbox command to use to create a DEM from the TIN. What arc toolbox command do I use to do this? I know I can go from a DEM to a TIN. I now want to go the other way. I have a student license of arcgis so I have all the extensions. Ideally I want to go from contour lines directly to a DEM. Is this possible?
You can use the Topo to Raster tool (3D Analyst > Raster Interpolation or Spatial Analyst > Interpolation) to convert the contour lines to a DEM . There is also the TIN to Raster tool (3D Analyst > Conversion > From TIN) you could use as well.
I am also trying to create a flood map using a contour line with an interval of 1m. I have created a TIN and DEM from both Topo to raster and from create TIN, but the resulting map seems not correct. With the area that I am working with, there is a lagoon enclosed by a land (indicated with contours of some height). The resulting DEM shows that there are also elevations in the lagoon, which was not provided in the contours.
I have a related question, about using the DEM created by Topo to Raster in ArcScene (10.2, I think?). When I try to set the base heights so that the DEM displays as a 3D surface, I don't have the option to "Use elevation values in the layer's feature." Any suggestions on how to fix this, or what I may have done wrong?
I should mention that I have only recently started getting back into GIS after several years away, and it's entirely possible that I have forgotten a crucial step.
Ok, now I have a problem. I tried to regenerate a DEM with a polygon made up of polylines (constraining the land), and I use Topo to Raster in ArcGIS 10.1. When the process finishes, the message pops up showing that the Topo raster has been completed successfully. However, there was no DEM produced. It was suppose to come out as a new layer, but this time, it doesnt. I kept trying many times and no results generated.