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Questions tagged [splitting]

Division or partition of geometric features

3
votes
1answer
54 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
votes
0answers
22 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 ...
2
votes
1answer
58 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
votes
1answer
56 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
vote
1answer
23 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
56 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
vote
1answer
65 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
votes
0answers
33 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
78 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 ...
1
vote
0answers
45 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
votes
0answers
21 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
47 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
votes
0answers
10 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
42 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
26 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
49 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
44 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
18 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
72 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
25 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
101 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
24 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
37 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
61 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
39 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
54 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
68 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
80 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
27 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 ...
1
vote
1answer
75 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
48 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
81 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
27 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
1answer
44 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
51 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
40 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 ...
5
votes
1answer
595 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
102 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
297 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
121 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
107 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
40 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
64 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
93 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
104 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
46 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
81 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
67 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
28 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
22 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 ...