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Questions tagged [splitting]

Division or partition of geometric features

2
votes
1answer
36 views

Split a line at a specific elevation

I have a polyline shapefile with the following attributes: start elevation, end elevation, slope and length. I need to split the lines at a specific elevation, using ArcGIS. Essentially, if my line ...
2
votes
0answers
23 views

Showing split polygons in different layers in QGIS

I used the split feature to split a polygon into two parts. Is it possible to show the split parts in sub-layers in the layers panel, so that I can hide them individually? I am using QGIS 3.
1
vote
1answer
39 views

Splitting multilinestrings in segments using PosgreSQL

I need to split several multilinestring into a defined number of segments using PosgreSQL. I tried using ST_subdvideand ST_segmentize but they didn't work. Can someone help me to solve this problem? ...
3
votes
1answer
32 views

Filling or splitting polygons proportionally based on variables using QGIS?

I want to divide each country into three separately coloured areas, like this: The proportions of the three coloured areas must based on three columns of attribute data in the country shapefile's ...
1
vote
0answers
15 views

Split Multiple Rasters into multiple rasters of different size in QGIS

I am wondering if there is a way to take multiple .tiff or .ecw files of any given size, and divide them up into multiple files of the same type, but of different size, using QGIS. Also, is it is ...
2
votes
1answer
69 views

Un cut features QGIS

I was working on a polygon that I split using the Split features tool. I'd like to put it back into one piece, is there a way to do so?
1
vote
0answers
21 views

Split single polyline network at a point feature to make unique fields with unique distances

I am working with a large river network polyline shapefile. I am trying to calculate a dendritic connectivity index using a point shapefile representing locations. The river network shapefile has a ...
1
vote
1answer
38 views

Splitting polyline at multiple points using Mapinfo Pro?

I have a table of points and used the mapbasic app "Connect the Dots" to create a polyline. The problem is it creates a single polyline and I want to split it up into separate lines so I can delete ...
2
votes
1answer
21 views

Change unit in Split tool on ArcGIS Pro?

I'm working on a project with a CRS in meters, map units and display units are also in meters, but Split tool (from Modify features) is in feet: Is there a way to change unit to split based in a ...
1
vote
1answer
35 views

Merging lines, issue

I use qgis 2.18. I've merged two lines into one with the merging tool from advanced toolset. When I cut off a small part of the line, I see the original lines again? In these two lines I have the same ...
2
votes
2answers
59 views

Splitting catchments in GRASS

I have the polygon of my catchment of interest, I call it catchment A (Reyran in the schema). (format *.shp). I have also the x-y coordinate of a dam that is situated in the catchment. I have also a *...
0
votes
0answers
33 views

Split Polygon to match length of lines with QGIS

I have a large polygon shapefile with many features (green), representing waterbody outlines, and a line shapefile (brown) representing river sections. I now want to split the polygon features into ...
0
votes
1answer
41 views

Splitting line into segments of different length with ArcGIS Desktop?

I have a river network and I have to split each river into transects of different length. The distances where the lines have to be split are in an excel sheet. For example I have to split the river 1 ...
2
votes
0answers
38 views

Splitting lines/creating vertex at intersection using PyQGIS?

I am looking for an easy way or function to split 2 previously selected line features (generate vertex) at intersecting points (or touching points). See the following picture: I am developing a ...
0
votes
1answer
57 views

Dividing polygon and assigning values ​proportionally (population) using QGIS?

I need to split several polygons (census blocks) that contains numerical attributes (population) into smaller blocks, but assigning that data proportionally. For example: if the splitting is made by ...
0
votes
1answer
26 views

QGIS Line Subdivide by distance

I know in QGIS you can subdivide a line, but is there a way you can type in a distance and the line will split according to this, with the last segment being smaller in length? If not I will try to ...
0
votes
0answers
37 views

Split to equal length option is not working properly

I have a road data (line vector) which consist of a few lines and I have the length of each line segment. I want to split it into segments of 100m. When I used v.split tool, apart from 100m segments, ...
1
vote
1answer
71 views

Using Iterator with ModelBuilder for clipping and splitting in ArcMap?

My input feature class is a county-wide dataset and the input clip feature is a township’s ‘section.’ I have 576 different ‘sections’ in which to clip the county-wide data out to. Though I dont have ...
0
votes
1answer
36 views

Splitting line in proportional parts in QGIS

I have recorded flight paths of birds as lines. Now I want to transform the lines to points, which represent the bird's position in a minute interval. For this I want to divide the lines by the time I ...
1
vote
1answer
70 views

ModelBuilder overwrites output when using split tool?

I have one SHP file containing polygons that describe splitlines in rows and cols. I'd like to use this to split an existing dataset of a few hundred SHPs containing tree positioning data. The extends ...
0
votes
0answers
25 views

Why does ArcGIS produce different file output types for the 'Split by Attributes' tool when using either ArcPy or the GUI?

I'm trying to split a polygon shapefile into separate shapefiles based on attribute values within an ArcPy workflow. I use the following: inData = "saltmarsh_extent.shp" inTemp = "G:\tmp" arcpy....
0
votes
0answers
28 views

Getting the new two lines distances after splitting a segment on a point for a set of data PostGIS

I have a road shapefile that I imported into PostGIS that includes mainly the geom and the length (in km) of each of my segment AND hub shapefile containing set of nodes that I placed on the road. Now ...
0
votes
1answer
43 views

Split polygons between 2 shapefiles

I have 2 overlaping shapefiles. Is there any way, where I can select polygons from the 1st shapefile and trim everything that overlaps with them, in the 2nd shapefile? I am using QGIS.
1
vote
0answers
34 views

Digitization tool not showing split in QGIS

I have a line shapefile and a polygon shapefile (boundary+map). I want to split the polygon with the line (making my map have two distinct areas) . I used the digitization tool and no errors appear ...
1
vote
0answers
36 views

Splitting feature into fixed measurements

For my thesis I'm trying to split featuring in QGis into multiple new features of a fixed size (5.5 by 2 meters). I think it would be the equivalent of ArcGIS' Parcel Division tool, but unfortunately ...
4
votes
1answer
382 views

Split polyline by point using 'sf' package in R

I'm learning the sf package in R and would like to locate about 450 sites along the nearest reaches of a river network and to obtain the upstream and downstream distances along the reach where the ...
-1
votes
1answer
84 views

Splitting points from GeometryCollection?

I am using PostGIS ST_ClusterWithin function for clustering: SELECT row_number() over () AS id, ST_NumGeometries(gc) as total, ST_AsGeoJson(gc) as geo_collection, ...
3
votes
1answer
265 views

How do I split polygon in equal parts based on polygon area?

So, I came across this relevant question, but I think my problem is a bit different. I have two tables i.e. polygon poly and points pts in my Postgres db. I am on Windows 10 (x64) based machine and ...
1
vote
0answers
105 views

How to divide irregular polygon into equal areas [duplicate]

I am seeking to divide this 200 acre polygon into 5 polygons of 40 acres. I have yet to find a concrete solution to this task by searching this forum. Is there a pragmatic tool in existence that can ...
4
votes
2answers
92 views

Automatic split a mosaic of satellite images into pieces

I have a mosaic of satellite images, but for the analysis, I need to define the boundaries of each part. Does anyone know how to do it in an automatic way? I need to get the red boundaries like on the ...
1
vote
1answer
39 views

Splitting line at all vertices in ArcGIS Desktop?

I need look through 3025 lines and split them at every vertex, then make points at the end of them and call them fittings. My coworkers would select 1 by 1 and hot key them. Is there a better way? ...
0
votes
1answer
59 views

Combining two models, one having an iterator

I have two different ModelBuilder models: Create a new field and split a layer Merge all layers in one folder I want to append both models in one but it does not work. The Model have a loop and I ...
0
votes
1answer
79 views

QGIS - Split Vector Layer returns empty layer

I'm to split a vector layer by feature with "split vector layer" tool in qgis I want to split the "switchboar" column after I fill the tool I receive the new empty layer Does anybody know why I don'...
3
votes
3answers
80 views

Split a large polygon with a layer of polylines or with a layer of polygons

I have a large polygon, of about a size of a municipality and i want to split it in about 12 - 13 pieces by using a related layer of either polylines or polygons (buffered polylines). I tried using ...
1
vote
0answers
41 views

Split shapefile to approximate area

I have a shapefile with multiple polygons of different sizes and want to split this shapefile to new ones trying to achieve a determined area, but without splitting any polygon. For example: I want ...
0
votes
0answers
60 views

Split Line at Point not working in ArcGIS Desktop?

While i was using the "Split Line at Point" function with two features, both with 80000 point features and 90000 line features each, the finished result wouldnt split on the points. It would split a ...
2
votes
1answer
52 views

split attribute using ArcGIS Field Calculator

I have a long string in one attribute. I want to be able to extract a small portion of it into a new attribute. This is an example of the attribute: "< html xmlns:fo="http://www.w3.org/1999/XSL/...
1
vote
1answer
26 views

cutting waterlines at the edge of polygons

Using ArcGIS 10.3, I would like to cut the river lines at the edge of water body polygons bordering the region. Using the intersect tool and split line to points tool resulted with the disappearance ...
0
votes
0answers
20 views

Splitting a polyline at vertices and calculating start and end measurements for new features based on a known measurement of the original polyline

I have a route network which has a length-attribute defining length of each feature. This length-attribute comes from a data register outside of gis. Now I need to split each original feature at ...
1
vote
1answer
62 views

QGIS: split polygon features with different polygon layer

I have two polygon layers. One containing vegetation features and one containing the borders of different monitoring areas. I want to calculate the total size of different vegetation types per ...
3
votes
1answer
161 views

Finding geographic median in ArcGIS Desktop?

Is it possible to split the total population in 501 polygons, each polygon with a different number of inhabitants into two North/South sub-areas with roughly the same number of inhabitants in each sub-...
1
vote
1answer
83 views

Splitting line by other lines using ArcMap?

I have two shapefiles. The first: a line. The second: several lines overlapping the first line. For some reason, I can't split the first line manually so now I want to split it where it's being ...
0
votes
0answers
24 views

Arcpy multivalue add to where clause

I'm trying to create my first tool, where will be possible to insert multivaule into process. I need to insert these values to "where clause" but in my code it inserts only one value. Here is my ...
3
votes
1answer
93 views

Splitting lines with polygons that do not intersect using ArcGIS Desktop?

Is it possible to split polylines based on the boundary of the nearest polygon using ArcGIS Desktop? I am trying to split a multi-part sidewalk layer based on adjacent parcel boundaries and assign ...
2
votes
0answers
154 views

split lines into segments without creating new layer in QGIS

How to split line objects into segments/multiple objects based on either polygons or lines without creating a new layer? The problem is clarified in the picture below. I need the green line to be ...
3
votes
2answers
331 views

Split vector layer in PyQGIS

I have a polygon shapefile that has several attributes. I would like to know how can I create automatically a vector file for each one. I already find split vector layer in QGIS (like picture): but ...
2
votes
0answers
102 views

Polygon splitting and merging to another one without overlapping using ArcGIS Desktop? [closed]

I have a layer of different types of polygons. Some are fields, other are roads. Sometime a road polygon is entering a field polygon. As presented on the capture, the yellow road (polygon 1) is ...
-2
votes
1answer
30 views

Splitting polyline feature in ArcGIS Desktop causes part of feature above split point to disappear? [closed]

Why is it, when I split a polyline feature in ArcGIS Desktop, that the part of the feature above the split point disappears? Video of it happening: https://imgur.com/erKVSLR
0
votes
1answer
30 views

Splitting line and determining unique output using ArcGIS Pro?

I am using ArcGIS Pro on a water main system. I have water mains and water main valves and I am trying to split the main at the valves. The problem I am having is which attribute becomes the ...
0
votes
0answers
24 views

Refining four sets of polylines to one set using MapInfo?

I'm using an old version of MapInfo. I have 4 data sets of polylines (called links) with different IDs and attributes. Each set has around 5000 links, so manual editing is not feasible. -Set 1 has a ...