[GIS] How to add a polyline segment created with Points to Lines tool to a feature class and apply that feature classes attributes to the line segment

arcgis-10.0

I am a new ArcMap user transitioning from using AutoCAD.

I have created lines from a point shapefile and have broken them into segments. These segments need to have a specific attribute table attached to them with unique ID's.

I have created all of the line segment types as new polyline feature classes and have the appropriate attribute table correctly formatted for each line type. They are empty at this point.

What I need to do is to take the segments that I have and move them into the various feature classes so each segment has the 'classes attribute info. The ultimate goal is to have these segments correctly attributed for submission to a government agency.

I hope this description makes some sense.

I know that I can 'create features' and trace these segments but I was hoping to find a more efficient way.

Best Answer

Ryan,

If you want to transfer Point attributes to your Polyline features, you can use ArcMap's "Spatial Join" to accomplish this. This runs on all features in both feature classes. The Point feature must "touch" a Polyline feature for the join to take place. There is also an "Attribute Transfer Tool" where you must click the source feature and then click the destination feature for the transfer to occur. No batch mode and no Spatial relationship is required. The "Attribute Transfer Tool" has a dialog to define the field relationaships (what field values will be transfered to the destination feature class).

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Then calculate the new field to the value 0 (zero) for all the features.

Now, in your Create Routes tool, you choose the "Measure Source" to "TWO_FIELDS" and select the From (From Measure Field) and Section_length (To Measure Field) fields. This way the routes get the digitalization direction, as their measure direction.

[GIS] How to populate From Node and To Node fields for a polyline feature class? (ArcGIS 10)

Just figured out this in VBA. Before running this make a backup (not well error handled). First layer should be the Intersection point layer and second layer should be the road layer. make sure you have started Editing.

The code spatially identifies the point features on the start and end points of every line feature and Updates the OBJECTID values to FNODE and TNODE fields.

Sub UpdateFromTo()
Dim pMxDoc As IMxDocument
Dim pMap As IMap

Set pMxDoc = ThisDocument
Set pMap = pMxDoc.FocusMap

Dim pointFtrLyr As IFeatureLayer
Set pointFtrLyr = pMap.Layer(0)

Dim lineFtrLyr As IFeatureLayer
Set lineFtrLyr = pMap.Layer(1)

Dim lineFC As IFeatureClass
Set lineFC = lineFtrLyr.FeatureClass
Dim fromNodeIndex As Integer
fromNodeIndex = lineFC.FindField("FNODE")
Dim toNodeIndex As Integer
toNodeIndex = lineFC.FindField("TNODE")

Dim pFI2 As IFeatureIndex2
Set pFI2 = New FeatureIndex

Set pFI2.FeatureClass = pointFtrLyr.FeatureClass
Set pFI2.OutputSpatialReference("Shape") = pMxDoc.FocusMap.SpatialReference
pFI2.Index Nothing, pointFtrLyr.AreaOfInterest


Dim m_IQ2 As IIndexQuery2
Set m_IQ2 = pFI2


Dim pID As New UID
pID = "esriEditor.Editor"
Dim pEditor As IEditor
Set pEditor = Application.FindExtensionByCLSID(pID)

pEditor.StartOperation

Dim pLineCursor As IFeatureCursor
Set pLineCursor = lineFtrLyr.Search(Nothing, False)


Dim pLineFeature As IFeature
Set pLineFeature = pLineCursor.NextFeature


Dim foid As Long
Dim toid As Long
Dim fdist As Double
Dim tdist As Double


Do While Not pLineFeature Is Nothing

Dim pLine As IPolyline
Set pLine = pLineFeature.Shape
m_IQ2.NearestFeature pLine.FromPoint, foid, fdist

If Round(fdist, 0) = 0 Then

    pLineFeature.Value(pLineFeature.Fields.FindField("FNODE")) = foid
    pLineFeature.Store


End If

m_IQ2.NearestFeature pLine.ToPoint, toid, tdist


If Round(tdist, 0) = 0 Then

    pLineFeature.Value(pLineFeature.Fields.FindField("TNODE")) = toid
    pLineFeature.Store

End If

Set pLineFeature = pLineCursor.NextFeature
Loop

pEditor.StopOperation "Calculate FromTo Nodes"

MsgBox "Features updated!!"

End Sub

Best Answer

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