Division or partition of geometric features

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3
votes
1answer
86 views

Split single line based on the 3D length

so I have a transect line which I already add the z value using the Interpolate Shape. I need to split this line into 100m in 3D length, which due to elevation must be different than 2D. However the ...
2
votes
1answer
157 views

Using ST_split to split a line feature using nearby points

I have a line shapefile and a point shapefile, and the line has just one segment and its attribute table, the point shapefile has points near the line above, not on it and the close ...
1
vote
1answer
55 views

Split a polygon based on density of points in ArcGIS 10.1

I have two layers: Polygon layer representing administrative boundaries Polygon layer representing topography (i.e. a map) In some of the administrative areas, the buildings (shown in the map) are ...
1
vote
1answer
78 views

Force St_split() to return geometries in specific pattern

I'm Using PostGIS st_split() to split a polygon geometry by a linestring. Then I use st_dump() to return each of the splitted geometry and it is working fine. But the issue is I want to force ...
0
votes
1answer
71 views

Removing slivers after splitting a polygon with a line

Image 1 shows before editing. Image 2 shows 'edited line which i used too split with and with labels Close up in 3rd image. I often split polygons with a line (ArcGIS 10.1 Split Polygon tool). In ...
0
votes
1answer
75 views

Identifying streets of same name where split by osm

I have a large map of every street in the country. This is a vector layer in QGIS many streets are split by OSM , IE have a different OSM ID yet the street has the same name. Often these streets are ...
0
votes
1answer
152 views

How do you change starting point on a polyline? (split tool)

There must be an easy fix for this. I am using the split tool and I want it to split a polyline into equal parts. For some reason, it is starting in the middle of my polyline. How do I force it to ...
2
votes
0answers
48 views

How to split a raster into x tiles that overlapped by x km?

I have a raster that I split into three tiles by using the function Split raster in ArcMap as follows: How can I split my raster into three tiles that overlap by 2 km as follows : ?
2
votes
0answers
36 views

Dividing a polygon into two OpenLayers

I'm using OpenLayers to draw a polygon to my users. I want the ability to implement through a line, split the polygon into two, with the cutoff line that the user drew. Does anyone know if this is ...
2
votes
0answers
100 views

Dividing a line into 250m segments

I am currently working on a hydrology project where I am trying to break a stream network into 250m segments. The problem is that the streams are not all adjacent, as I have clipped the NHD file to ...
1
vote
0answers
41 views

Splitting Line.shp at Point.shp with Python/ogr

I'm trying to modify some ESRI Shapefiles using Python with gdal/ogr module. What I want to do is quite simple, but I didn't find any solution by now. I have two shapefiles: (1) Lines.shp and (2) ...
1
vote
0answers
48 views

Splitting lines once at specified distance from each end?

This is related to an old problem of mine, regarding arrowheads on lines, which doesn't look very nice unless the line is very thin. It's even an ArcGIS idea with quite a lot of votes (although no ...
1
vote
0answers
22 views

ST_SplitRight() in PostGIS?

I am looking to split a shapefile via a line. I am interested only in the feature that lies to the right of the line; exactly what ST_SplitRight does here. Do any of you know of a way to do this in ...
1
vote
0answers
20 views

Is there a way of splitting roads at intersections with contours in QGIS?

I'm a beginner with QGIS. I need to split a polylines showing public roads at each intersection with a table containing elevation data (contours) which is also in polyline format. I will also need ...
1
vote
0answers
160 views

Splitting a branched river network at point layer

I need to split a country-scale river network (polyine) at certain barriers (point) so the length of (branched) river sections that have a certain minimum length. I used the following procedure: 1) ...
0
votes
0answers
26 views

What's the best way to break closed polyline using ArcObjects?

I have a polyline feature class with several closed lines (the start point = the end point). I need to break these lines in two features, using ArcObjects (doesn't matter Java, VB or C#). I have ...
0
votes
0answers
34 views

Dividing a polygon into certain areas (open source solution preferred)

I have a polygon with an area of 50.000m². Now i want to devide this area in two polygons of different areas with a line layer. The left polygon should have an area of 30.000m² and the right polygon ...
0
votes
0answers
93 views

Splitting multiple polygons with a line in JTS geotools

i am using geotools as my GIS map solution. now i want to split multiple polygons to build a road or river. passing through multiple polygons so, can you plz help me how to do this splitting a single ...
0
votes
0answers
83 views

How to split an oblong, irregular polygon layer into even pieces?

I have a polygon layer (landuse) that I want to split into 100 meter pieces. The polygons show landuse along a road. I want to split the polygons layer so that I can then calculate the percentage of ...
0
votes
0answers
45 views

Split/Erase/Differentiate polygon by polygon within a same layer

Is it possible to split a polygon with a polygon within the same layer in QGIS ? As in the image, i want the Polygon 2 to be split & the pointed area has to be retained as a separate polygon. ...
0
votes
0answers
28 views

Chopping vector polygons

I am a Global Mapper user. In GM we have a function to chop polygons with holes in it. Is there such function in QGis? If yes, is it available via script? I am totally new to QGis so I would ...
0
votes
0answers
209 views

How to split multiple lines into equal parts or overcome split tool limitation using Basic or Standard license?

I would like to split multiple lines into equal aproximately 10m lengths. (Line length / 10m = number of segments) The split tool can only split one selected feature at a time. To overcome this I can ...
0
votes
0answers
135 views

ArcMap 10.2 SplitLineAtPoint setSplitRule not calculating RATIO

I am trying to set a length field to use the RATION split policy. I set the split policy for the feature layer but when I use the SplitLineAtPoint_management it does not calculate the RATIO length. ...
0
votes
0answers
120 views

How to split a line at designated points and vertices(confluences)?

I have a line that already has its own segments and attribute table: I've used line dissolve tool in Geoalgorithms to make the previous attribute table look like this:so I make the segmented line ...
0
votes
0answers
109 views

How to change Split Vector by Attribute to produce files with attribute values as file names?

Using: QGIS 2.0.1 I am trying to separate a large fauna point .shp file into many shapefiles based on each species' unique name attribute (i.e. by "SCI_NAME" field)??? I am currently using "Split ...
0
votes
0answers
815 views

How to split polygons based on other polygons?

In ArcGIS, I have a layer of polygons (created from the Service Area function) and want to split each one of those based on another polygon layer (the boroughs of London). The purpose is that I want ...
0
votes
0answers
191 views

Splitting a TAB file by attribute?

I have TAB file with LOADS of points. Each point as a unique ID and group assigned to it (ranging from 1-154). I'm wondering if there is an easy way to split this up into a TAB file for each group, ...
0
votes
0answers
88 views

why are split-lines saved in the attribute table? (qgis 1.7.4)

A few months ago I splitted some lines in a shapefile with official roads because they are not accessible anymore. Now I loaded that file again into my project and the splitlines appears. Because I ...