Create Z for Polyline Vertices using DEM

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01-18-2016 12:59 PM
JohnHandley
New Contributor III

I am working with new polylines and trying to figure out a way to populate the Vertices "Z" column using a DEM. I have tried the 3D "Add Surface Information Tool" but no luck.

TIA!

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16 Replies
KyleBalke__GISP
Occasional Contributor III

Ensure both the DEM and feature layer in the same coordinate system.

XanderBakker
Esri Esteemed Contributor

This does not provide me with a lot of information of the types of input data. Could you include the information of the layer provided in the Source tab of the properties for both the DEM and the polyline featureclass?

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JohnHandley
New Contributor III

This is the Line Feature:

Data Type: File Geodatabase Feature Class
Database: \\energy\data\common\Regency\Dallas\Workgrps\Engineering\Personal Working Files\Handley, J\GIS Data\New File Geodatabase.gdb
Feature Class: New_Feature
Feature Type: Simple
Geometry Type: Line
Coordinates have Z values: Yes
Coordinates have measures: Yes

Projected Coordinate System: NAD27_New_Mexico_East_ft
Projection: Transverse_Mercator
false_easting: 541337.50000000
false_northing: 0.00000000
central_meridian: -104.33333333
scale_factor: 0.99990909
latitude_of_origin: 31.00000000
Linear Unit:  Foot_US

Geographic Coordinate System: GCS_WGS_1984
Datum:  D_WGS84
Prime Meridian:  Greenwich
Angular Unit:  Degree

Can't Copy/Paste Source Tab data for the DEM.

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XanderBakker
Esri Esteemed Contributor

That may be the reason. In what format is the DEM available?

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JohnHandley
New Contributor III

The DEM is available in Geographic coordinates NAD83. I have no problem pulling in Z for the attributes, it's just when I try to add Z to the actual Vertices of a polyline.

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XanderBakker
Esri Esteemed Contributor

Here is a list of raster formats supported by ArcGIS: Supported raster dataset file formats—Help | ArcGIS for Desktop Could you please tell me in what format your DEM is? Or do you have a TIN or a surface?

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JohnHandley
New Contributor III

I finally got the "Interpolate Shape" process to work!

As Kyle pointed out, the data being used needs to be in the same coordinate system. In this case, it was Geographic coordinates NAD 83. In Edit mode, looking at the Sketch Properties, all my line vertices now have Z values. I will also add that using the "Z Factor" is a handy way to convert from Meters to Feet.

Thanks Again.