Splitting a line

Question

Hello,

I want to split a line into many lines.
Every 500m I want to make a split.

I found this description for 9:
http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Splitting_line_features
and this for 10:
http://help.arcgis.com/en/sdk/10.0/arcobjects_net/componenthelp/index.html#//002500000300000000

in 9's solution i can split it into only two parts or CREATE points along the line in equivalent distances
but i need a combination of both and performance is important, so I ant to solve it in one turn not in two

in 10's solution the line is also onloy splittet by points

an other solution could be to use this:
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/into_an_equal_number_of_parts/001t000003vz000000/
I could read the lines lenght, divide it into approximately  500m pieces and split the line into the divide-count
but I cant find anything like this function in the sdk....

does anybody know a better and faster way?
thanks for ideas and help

AriadnaP · Answer

HI!

Is there another way to split the WHOLE line by distance? By using the Editor - Split, it only splits the first segment, and I have to keep repeating the same process for the whole line.

For what I've read it seems I should download this IPolyline.SplitAtDistance tool? or the SplitAtLength. But how do I do that? these links only lead me to command steps but I would need to know how/where to download it and use it from ArcMap Interface...

Thank you for your help

Hello,

I want to split a line into many lines.
Every 500m I want to make a split.

I found this description for 9:
http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Splitting_line_features
and this for 10:
http://help.arcgis.com/en/sdk/10.0/arcobjects_net/componenthelp/index.html#//002500000300000000

in 9's solution i can split it into only two parts or CREATE points along the line in equivalent distances
but i need a combination of both and performance is important, so I ant to solve it in one turn not in two

in 10's solution the line is also onloy splittet by points

an other solution could be to use this:
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/into_an_equal_number_of_parts/001t000003vz000000/
I could read the lines lenght, divide it into approximately  500m pieces and split the line into the divide-count
but I cant find anything like this function in the sdk....

does anybody know a better and faster way?
thanks for ideas and help

DubravkoAntonic · Answer

IFeatureEdit.Split method looks more performance intensive then SplitAtDistance because after each split it stores new features, and deletes starting feature. And it looks to me you will call the Split function more then once for each Polyline.

Consider Neil advice and use IPolyline.SplitAtDistance. All operations are stored in local memory and you will store final features/geometries without continuous deleting in DB.

If you have large amount of long and complex features to process keep in mind that for complex feature Geometry at beginning of operation can take about 10Mb each. Just not to loose performance on memory paging and swap files.

SebastianKrings · Answer

I additionally found this:

http://help.arcgis.com/en/sdk/10.0/arcobjects_net/componenthelp/index.html#/Cut2_Method/002m000003tt000000/

that's what I want, just for polylines, too, instead of only polygonsCut2 is now only available in polygons.

Or:
http://help.arcgis.com/en/sdk/10.0/arcobjects_net/componenthelp/index.html#//002m000002p4000000
It seems that it is deviding a Line by a Polyline into a right and a left part.
What will happen if there are more then one cutting points?