Questions tagged [splitting]

Division or partition of geometric features

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votes
0answers
40 views

Measure collected polygons in Geometry Generator, avoiding extra texts from multipart polygons

I combined a set of polygons on the first instance of Geometry generator using something like this: buffer(buffer(collect( $geometry, concat("MZNA","REGLABEL")), 0.1), -0.1) Buffers are meant to ...
4
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2answers
543 views

Splitting polygons at narrowest part using R?

I have a dataset of polygons like this one: I would like to split these polygons in separate parts at their most narrow location (if they have one). For example the two small polygons should not be ...
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0answers
14 views

Split height data based upon grid? (Same as Create Grid, Intersection, Split Data for Vector)

I have vector data for a large area that I have split into 2km x 2km layers using Create Grid, Intersection, and split, within the vector menu. I've downloaded STRM data for the whole area. I'd like ...
2
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1answer
29 views

Split features of multi-part polygons according to condition(s) in QGIS

I have a multi-part polygon with a large number of irregularly-shaped features (>600 features). I would like to split them into smaller sub-features/ segments(?) and assign a unique id to these ...
0
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1answer
31 views

Splitting OSM files into multiple smaller pieces using QGIS?

I have a large osm file of a city. I want to split this file into multiple smaller pieces (e.g 50) and retain all smaller pieces for further use rather than just a portion of it. Is anyone aware of ...
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0answers
16 views

Can ArcGIS solve split delivery problem, for each order split into like 2 or 3 orders ateast?

I am trying to solve the split delivery vehicle routing problem using ArcGIS desktop. I first tried splitting the orders into very small quantities like 20. Before splitting, my original orders were ...
1
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1answer
43 views

Split lines by polygons PostGIS

I have lines that I would like to split at polygon boundaries. The line table is MULTI and the polygon table is MULTI and was derived from a MULTILINESTRING table that was buffered then unioned to ...
1
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1answer
23 views

Assigning points to all bends on polyline in QGIS 3.6

I have a series of polylines representing water pipelines that I want to clean up. I want to split the pipeline polyline at key locations where there is a fitting such as a stop valve or hydrant. ...
2
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0answers
45 views

Splitting layer with many polygons into independent shapefilles? [duplicate]

Is there any way to save many shapefile, which are not multipolygons, into shapefile, and then iterate over them? I have shapefile with plot polygons and I want to have each one independent in order ...
3
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1answer
50 views

QGIS: Split with lines does not fully work

I'm using QGIS 3.8 and I've got two shape files which I would like to cut in pieces using Split with lines Both times I used the algorithm the first two lines did not cut through my shapes, while the ...
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1answer
16 views

Splitting lines: Options for managing IDs and related records

I have roads in a feature class (Oracle 10.3 geodatabase). Roads are split into separate lines where they intersect. This is an established business rule that cannot be changed. Each road has ...
3
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2answers
89 views

Splitting feature says invalid geometry but Check Validity says its valid?

I am trying to split features in a shape file but I got an error message. I've had cases in other shape files where the message also appear. I then run the "Check Validity" option and rearrange the ...
3
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1answer
51 views

Determining if Parcel is Sub-Dividable?

I am trying to determine which residential real estate parcels are sub-dividable but am running into issues when it comes to placement of an already existing structure on a parcel. For example, let'...
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2answers
111 views

How to pull values from one geodataframe to populate corresponding column/rows in another geodataframe

I have 2 geodataframes; one made from polygons (bldg_res_df) and one from centroid points (parcel_res_df). I used .concat to combine them into a single geodataframe to do some calculations. df_list = ...
1
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1answer
28 views

Split polygons by area/percentage with QGIS 3.x

Is there a function in QGIS 3.6 Noosa that allows me to split polygons with given area or percentage? There is a plugin for QGIS 2. "split polygons" that seems to have exactly what I'm looking for, ...
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0answers
32 views

QGIS splits line feature at all intersections? [duplicate]

I have a long GPS track that I've converted to a shape file. I need to divide it into segments. The first time I use the "split features" tool, it makes a cut where I draw my line, but also splits the ...
1
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1answer
53 views

Problem creating a GeoTIFF with RGB splitting image - R

I've like to split a RGB raster in multiple pieces and save each image in GeoTiff format, but in the file name I need the count of points (pts) inside each piece. My code runs perfectly when I used a ...
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0answers
26 views

Split lines in R creating 2 group ids [duplicate]

I would like to split a linestring into two features separated by a point. Here's what I mean: This is what I've tried so far in R using the sf package: Sample data library(sf) library(dplyr) # ...
1
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1answer
62 views

How to get only Intersected polygon in Open Layers 3

I am trying to draw a line on polygon which I want to split, Example: I want to split 616 polygon as show in image with below code when I tied to get intersected polygon I am getting 616,617,615 ...
2
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1answer
33 views

Using splitGeometry in PyQGIS

Using QGIS 3, I'd like to split a polygon using a line. My inputs are .geojson files, but that should be irrelevant: Line: { "type": "FeatureCollection", "name": "line", "crs": { "type": "name", "...
3
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1answer
119 views

Splitting vector layer into shapefiles (not geopackage) using QGIS?

Using QGIS 3.6.3, I have a layer with ten polygons. I want to use split vector layer to split the file into ten shapefiles, But the result output file is a Geopackage. How can I get ten shapefiles by ...
5
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2answers
126 views

Splitting polygon using another polygon in QGIS?

I have two polygon layers (yellow and orange in the attached image). I am wondering if there is a way to get a count of the number of isolated areas that the orange polygon has divided the yellow ...
2
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2answers
102 views

How do I split a line feature in segments of a set interval distance in Qgis?

In order to record some vegetation along a Dutch highway, I want to create a line feature along said highway of about 25 kilometers. The line feature must be split every 100 meters to create seperate ...
1
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0answers
14 views

Error while converting WGS84 => Albers-Siberia by ogr2ogr [duplicate]

While converting from one geosystem to another polygons crossed by 180 meridian left got split into eastern and western parts. Tool used - ogr2ogr library. Initial geosystem - WGS84, target - Albers-...
2
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1answer
252 views

Client-Side Polygon split

I wanted to know if there is a way to split a polygon using JavaScript. So I have a web map which uses Leaflet API, and the user needs to cut polygons which are shown in the map using a straight line. ...
2
votes
1answer
210 views

Splitting polygons and dividing attribute value proportionally using ArcGIS Pro?

I am using ArcGIS Pro 2.3.0. I have two feature classes (pictured below), RED polygons and BLUE polygons. The RED polygons have a numeric attribute, Value1. How can I split the RED polygons with ...
2
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1answer
143 views

QGIS SAGA split lines at points creates redundant lines

I have 2 projected (ESPG 2039) layers of roads and points (bus stops and junctions). I snapped the points to the roads layer and this is how it looks: I then try yo use Saga Split lines by points to ...
2
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0answers
39 views

Splitting line into two lines with GRASS GIS?

I converted a raster to polygon, after converting polygon to lines I have one line of the channel of a river which border a river. But I need to split this line in two lines: left border and right ...
2
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1answer
53 views

Split a polylines according to a specific point in R

I have 2 distinct spatial objects: on one hand I have a SpatialLinesDataFrame on the other hand I have a SpatialPointsDataFrame Considering one line and one point that intersects that line, I ...
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0answers
18 views

Splitting polygon using ArcGIS Pro ModelBuilder?

I would like to split several polygon features using other polygon features inside a model. I use arcgis pro 2.2.4 When I do it manually, it works perfectly fine and quite fast, but inside the model ...
0
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2answers
78 views

Splitting polygon with line in ArcGIS Pro?

I am using ArcGIS Pro and I want to cut my polygon features with a line, as the output would be also a polygon. I have no special licences, so I am looking for an alternative way.
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0answers
99 views

Spliting shapefile by geometry in QGIS

I was wondering if there is a way to split a shapefile's features in QGIS? I have many polygons in a shapefile which are separated geometrically. But in their attribute table they all have came in ...
3
votes
1answer
62 views

Splitting long polylines in shapefile?

I am looking for preferably a Linux command line tool that would spit long polylines in my shapefile to shorter segments. Length limit can be defined by the length in meters or in max number of ...
0
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0answers
30 views

Split Tool Deleting Smaller Polygon

I'm attempting to use the split tool to divide a vector shapefile into two parts. I used a process that I've been successful with before: Go to Edit > Split > Select my feature to split > Draw a line ...
4
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3answers
1k views

QGIS split vector layer gives me GPKG files but I need shp files

QGIS 3.6.0 I am new to QGIS software and not very technical on its deep workings. I am trying to split a .shp file using split vector layer. I need .shp file outputs but it auto creates .gpkg files. ...
3
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1answer
59 views

How do I split subjacent lines and merge attributes in QGIS [duplicate]

I have 2 vector line layers. They are subjacent, so one of them is exactly on top of the other but the features have different nodes and attributes. My goal is to create labels and descriptions for ...
1
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1answer
29 views

Using ArcMap to Split shapefile into multple shapefiles by attribute category?

I have a shapefile feature class that represents an area with signal strength per section of area. It has signal strength from multiple radio sources but I would like to make separate file for each ...
2
votes
1answer
810 views

Split polygon by MultiLineString - shapely

I'm working on splitting a polygon given a set of linestrings using the shapely python library. The problem I'm facing is that a polygon cannot be split by a MultiLineString usingshapely.ops.split(...
1
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1answer
121 views

Merge connected lines and split them after set unequal distances

I need to edit line features in QGIS 3.4.4. I have more than 1000 line features that I want to first merge and then split. The line features describe roads in useless intervals, my goal is to ...
0
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0answers
37 views

Exporting by attributes to PDF

I need to write a model in ArcMap that is similar to "Split by attributes", but, instead of creating the feature classes, it zooms the layout by unique attribute and export it to PDF. Any ideas about ...
2
votes
1answer
107 views

How to split and reproject a polygon shapefile into a grid based on area proportion with QGIS?

I have a shapefile with polygons (municipal.shp) which contains a variable (float numbers) for each municipality of an area. I want to distribute these values into a vector grid (grid.shp) with ...
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0answers
156 views

Impossible to split line in two parts with QGIS tool 'Split features' [closed]

I'm willing to cut a line in two parts with QGIS. So I enabled Snapping and I wanted to use the Split Features tool, like I've seen anywhere: one first left click and then another left click on the ...
0
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1answer
144 views

Clip linesegment at a polygon boundary using turfjs

Having a linestring and a polygon, Is there a way to clip the linesegment at the boundary of the polygon and retain the shape of the linestring which runs inside the polygon? Example Linestring { ...
0
votes
1answer
100 views

How to separate or cut the elevation from bathymetry raster TIFF file with vector layer coastline in QGIS 3.4.3?

I have a raster GeoTIFF file downloaded from GEBCO 2014 which contains bathymetry and elevation. I need to split in 2 layers the raster GeoTIFF file (layer: Bathymetry and layer: Elevation) using ...
0
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0answers
11 views

Clip the underlying map into several separate layers at once based on the rectangular fishnet

This is the final map of yield data. In order to see the details at a finer level, I want to cut the sections of the map overlain by the rectangular grid and display them as separate maps. Is it ...
2
votes
1answer
55 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
27 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
68 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
88 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
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0answers
21 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 ...