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Contour line to DEM

Anonymous User

Original User: luke.kaim

Hi,

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?

Thank you,
Luke Kaim

Thank you
Luke Kaim (SIE)
Lucas.Kaim@maine.edu
(914)263-7866

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Anonymous User

Original User: voldune

You may want to look into Topo to Raster (3D Analyst Tools > Raster Interpolation), or if you want to convert your TIN to a raster, use TIN to Raster (3D Analyst Tools > Conversion > From TIN).

Patrick

TimothyHales

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.

SteveLynch

Luke

TopoToRaster will convert the contours into a DEM.

Steve

Anonymous User

Original User: JJsiano

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.

How to proceed from here?

Jay

MargaretSneeringer

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.

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Anonymous User

Original User: stevelynch

With regards
With the area that I am working with, there is a lagoon enclosed by a land (indicated with contours of some height).

Did you specify this lagoon as a LAKE?

Steve

anitaYeeting

No I did not specify the lagoon as a lake. Instead I use the boundary to mask out the water from the land or to separate the land from water.

I have a separate data called the coastline but it was made up of polylines. I had to create a polygon from these polylines first so that I can make it a boundary of the DEM.

As with the Lake, is it going to be the same result as using the coastline as a boundary?what would you suggest as the best way to do it in terms of accuracy???,

thanks anyway

Jay

With regards
With the area that I am working with, there is a lagoon enclosed by a land (indicated with contours of some height).

Did you specify this lagoon as a LAKE?

Steve

Anonymous User

Original User: stevelynch

Rather use it as a lake and are you using ArcGIS 10.1 or later because TopoToRaster was updated in 10.1 (http://resources.arcgis.com/en/help/main/10.1/#/What_s_new_in_ArcGIS_Spatial_Analyst/016w00000028000000/)

anitaYeeting

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.

any tips?

Jay

Anonymous User

Original User: stevelynch

Jay

- Where are you sending your output?
- Try writing it to Esri grid in a newly created folder.
- Try running the tool in foreground mode (Geoprocessing->Geoprocessing Options->Disable Background processing)

Steve

anitaYeeting

I am still having problems displaying my outputs.

I have tried to disable the background processing and I still dont get my outputs displayed on my map.

My outputs are send to my workspace...the output was generated and added to the table of content but it was not displayed on the map.

What do you mean by writing it to ESRI GRID?how to do that???

Thanks

Jay

myname

first you create tin from contours

then you convert tin to raster/dem

here clip for you Coutours to DEM in ArcGIS - YouTube

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