Division or partition of geometric features

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1answer
80 views

How to get the LineStrings from a MultiLineString

I was wondering if there is a way I can extract the LineStrings from a MultiLinestring object. What I am really trying to do is look into a MultiLineString and see if I have a certain LineString. I ...
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1answer
174 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 ...
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2answers
112 views

How can I split polygons in the Natural Earth 10m land shapefile?

This problem, that I have also been struggling with, in QGIS 1.7.3 as well. Here are the steps to reproduce the problem: 1)Download Natural Earth 10m land shapefile from original website. *2)*Open ...
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1answer
99 views

Writing length of line along the line

I sometimes have to write out the length along a line for every couple of hundred meters or kilometers. This applies to pipes, when the construction team wants to know where along the pipe they are or ...
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1answer
57 views

QGIS - split polyline

I need to create a shapefile with crossed streets. I can't split the lines to number each segment with the house number ranges.
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2answers
41 views

Splitting polgons in QGIS produces topology errors

I am trying to split existing polygons but when I do, gaps and overlaps are created between the polygon I am cutting and adjacent polygons. I have snapping switched on and have enabled topological ...
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1answer
137 views

How to split lines with PostGIS and view the result in QGIS?

I have two tables, one contains lines (test_line) and the other contains the points at the vertices of the lines (test_line_vertex). I want to split the line into individual segments based on the ...
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1answer
38 views

Split linear features from non-linear in the same feature class

I have a vector layer (Originally a raster layer) of well sites, cut blocks, and seismic lines all lumped together in the same feature class and no distinguishing attribute between them. I want to ...
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2answers
150 views

Set a split policy/rule on a field without domain in ArcMap

Can you define a split policy or split rule on a field without a domain? When a domain is involved, you can set the default value of the field and chose a rule for when a feature is split or merged. ...
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1answer
84 views

How to split Polygons by line grid?

I want to split a polygon by a intersecting line into different parts, exactly like in this post(Qgis - Is there a way to split a polygon layer with a line layer?). I have a vector grid to cut the ...
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1answer
697 views

ArcGIS 10.2 Extract Polyline from Start/End Coordinates

I have two files. A polyline shape file of highways and a spreadsheet that contains beginning and ending coordinates w/ descriptions of segments of the highways. For example: BegX, BegY, EndX, EndY, ...
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1answer
106 views

ET Geotools Split Lines at Vertices Issue

This might seem like a really simple question but for whatever reason I can't figure it out. How do I run the split line tool in ET Geotools on an entire polyline layer? I can do it for a single ...
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1answer
367 views

Splitting polygons in OpenLayers is not working

I have some WFS layers in OpenLayers, containing Polygons. I try to make a tool to split these polygnos and save them to db. //The layer which I want spliting work on var contract_layer = ...
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3answers
81 views

Split a layer into a single layer

I have two multi-polygon layers, one a map of land uses, the other borders of administrative areas. I am interested in analyzing the amount of land use in each administrative area, but the polygons ...
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1answer
242 views

Distance of many polygons to a segmented line

I have a shapefile of U.S. counties. I also have a line segment. I want to compute the distance of each county to the line. I have also divided the line segment into 10 equal segments. I want to ...
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0answers
22 views

ArcGIS 10.1 - identify Vehicle Routes from Segment Counts

We have vehicle counts on every road segment in a small portion of our city, but we are trying to determine the route of individual vehicles on these segments. Is there an algorithm in ArcGIS 10.1 ...
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1answer
120 views

Split polygon into several smaller polygons in QGIS

I have a layer of polygons depicting response boundaries, I would like to break each of these polygons into a number of sub-polygons. As this is for an exploratory project, the polygons themselves ...
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0answers
92 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 ...
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1answer
78 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 ...
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0answers
24 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 ...
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0answers
25 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 ...
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0answers
564 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 ...
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0answers
183 views

Splitting a branched river network at point layer [duplicate]

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) ...
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2answers
245 views

How to split a shapefile feature?

The world map that I am using from NaturalEarth.com has France and French Guyana as one feature. I want to split these into two separate shapes. I'm sure there is a quick fix for this, and the others ...
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1answer
123 views

How to cut/split multipolygon with blade (linestring) into two pieces using PostGIS? [closed]

I struggle to do split operation in postgis I tried to build a query but Im always fail. Id like to cut a multipoligon with a blade (a linestring) into two pieces. These two objects have specific ...
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1answer
61 views

Split lines with points while maintaining other dissolved lines

I am on ArcGIS 10.2. I have a line feature class of a stream network. I also have a point feature class along the main stream (line) where a catchment enters that stream. I have dissolved my whole ...
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2answers
336 views

Splitting Shapefiles [duplicate]

I am trying to create a code that will accept the input of a shapefile, and separate each of its features into separate shapefiles into a specified directory location. Can anyone help ? I am trying to ...
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1answer
77 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 ...
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1answer
104 views

Split a line from point but with a certain distance [duplicate]

I am using ArcGIS 10.2. I need some suggestion about this problem, maybe there is a certain tool, but I think no. I think some python code... but I do not know from where to start :( I have two ...
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1answer
67 views

problems using the Split Features tool [closed]

i'm using the split features tool to create two polygons from a bigger one. The problem is, when i save the split i have done, half of the polygon disappears. But sometimes, after doing some more ...
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2answers
224 views

postgis linestring segmentation

How can I divide a single postgis linestring with SRID 4326 into segments (preferably an array of linestrings) with no segment longer than a given distance? I've tried st_segmentize(), but it spits ...
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1answer
16 views

Can A PLugIn in QGis let me cut polylines where the points of another shapefile are [duplicate]

I want to know if there is a plugin/tool in Qgis, that let me cut lines of a shapefile where the points of another shapefile are. Thanks in advance!
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1answer
52 views

What to use as split field or target workspace with Split tool?

I'm trying to use the split tool in arcgis 10.1 but I dont know what I should use as the split field or my target workspace. W:\S&P\s&p techs\Emily\Geodatabase\Geodatabase.gdb this is what I ...
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0answers
90 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 ...
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0answers
153 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 ...
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1answer
95 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 ...
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0answers
97 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 ...
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1answer
79 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 ...
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1answer
344 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 ...
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1answer
100 views

Splitting hexagonal grid into segments, dissolve by location

I am a little bit frustrated because I want to do something I did 5 years ago and I can't figure out how to do it again. I am creating a turnover map of species communities using R and ArcGIS 9.3. As ...
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0answers
154 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. ...
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1answer
90 views

How can we split a polygon within another polygon in Qgis? [duplicate]

How can I split the green area as a separate polygon fro the grey one in QGIS?
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1answer
161 views

Split by attribute automatically on several layers in QGIS

I need to do a 2 stage split by attribute, using QGIS 2.0.1-Dufour. After the first split, I got 30 layers. Is there any way to do the second split automatically? I don't really like the idea to make ...
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0answers
1k 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 ...
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0answers
251 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, ...
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0answers
98 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 ...
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1answer
18 views

creating many Shapefiles from from a single multi-polygonal shapefile using ArGIS tools [duplicate]

I have a country shapefile with many districts polygons which are administrative boundaries, I want to have a shapefile for each of the district, which tool in ArcGIS can I use to accomplish this
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3answers
494 views

splitting a lines layer using points

I'm looking to accomplish a similar task to this thread: How to split a line at point positions? Using QGIS and the Processing and GRASS toolboxes available, I'm looking to split a vector layer ...
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1answer
188 views

Optimizing ArcPy code to cut polygon?

There is a lot of nested loops and wondering of ways I could speed up this code? Any ideas? Note: This requires ArcMap 10.2 def cut_geometry(to_cut, cutter): """ Cut a feature by a line, ...