To combine two or more parts into a larger whole.

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10 views

Combine Community Layer with County Layer in ArcMap?

I have a County shapefile that I am trying to combine with an updated community or jurisdiction shapefile. I have tried Unioin, Merge, and Spatial Join, but am not getting the desired results. The end ...
1
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0answers
16 views

Merge multiple geojson-polygons

Lets say I have a very big image With a polygon in it: I want to polygonize this very big image with gdal polygonize. But the image is too big, so I dont have enough memory to polygonize that ...
0
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0answers
19 views

Join GeoJson with additional info files

I have a GeoJson-file [1] with multiple polygons exported from OpenStreetMap that will be updated regularly and I want to add additional information (to the properties) from another file [2] (JSON ? ...
2
votes
1answer
82 views

Overlaying lines and aggregating their values for overlapping segments

I have a number of routes (5 in this example data) stored in a SpatialLinesDataFrame called r. These have different origins but all converge on the same destination (Manchester Airport): Each ...
1
vote
2answers
23 views

Merging raster data in QGIS using wildcards

I have a problem merging raster data sets in QGIS, and I have searched various forums, but have not found a solution yet. An "ordinary" merge, for example merging the raster files ...
2
votes
1answer
29 views

ST_LineMerge doesn't return LineString

I want to create a LINESTRING from a MULTILINESTRING. However in the following case ST_MultiLineString is returned: Select ST_GeometryType(ST_LineMerge(ST_AsText(' MULTILINESTRING( (-70.52570888 ...
1
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1answer
20 views

FME - How to merge geometries that they are in a distance of x meters?

I have a CAD file which I import in FME. I have two different geometries. A polygon and a point geometry. Each point geometry has some attributes which I want to pass to the polygon geometry. Both the ...
0
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0answers
23 views

How to merge grd files programmatically, ideally in Python?

We currently get LIDAR data from the field in grd format. Sometimes this data is overlapping. This data gets fed into a python program that does some analysis. What I'm after is some way of ...
2
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0answers
41 views

Create polygons from many small. Expand to include space between

I'm just a programmer without GIS-skills as such. Hence this question: Intro: I have a lot of polygons; actually each private-owned real estate in my country. I also have "counties" as polygons. ...
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0answers
20 views

QGIS how to merge a linestring layer and a point layer into a multigeometry layer

I have two layers: Layer1 is point type. Layer2 is linestring type. I need to obtain one unique layer merging both layers. Of course, it will need to be multigeometry type.
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votes
1answer
66 views

Unable to merge two shapefiles (created from text files) using ArcPy? [closed]

I am trying to merge 2 shapefiles together created from 2 text files. I am new to python and managed to get the textfiles into shapefiles, however, when trying to merge the two newly created ...
0
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1answer
59 views

Merging polygon and line shapefiles into one using QGIS?

I have two shapefiles: One is a line feature of the rivers and waterways of London, the other is a polygon feature of the reservoirs, lakes and ponds of the same area. Is it possible please to merge ...
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2answers
38 views

Mosaic To New Raster - Raster Cells Shift

I have wind raster datasets for the U.S. that are organized by state and I would like to merge these datasets to get one map of the whole U.S. I am new to using ArcGIS and through some research I ...
1
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0answers
31 views

merge polygons of single feature QGIS

I am new to QGIS and have done some research on this topic before posting but not sure I found an answer. I have one feature that has multiple polygons (islands of a nation). In reality, there is ...
0
votes
2answers
49 views

python conditional statement to allow either two inputs or only one input going into a merge

I have a model builder process that I am converting to python for additional editing. In the process I have both a point and line features(input variables) being buffered and then the resulting ...
0
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1answer
39 views

Merge Feature Records with Identical Parameters in Two Different Fields using ArcPy or SQL [SOLVED]

I'm trying to merge feature records based on identical parameters in two different fields using Python or SQL. I have a polygon feature class with ~800 records, that I've intersected with another ...
2
votes
0answers
37 views

How to union linestring data distributed on multiple layers?

I have four shapefiles. Each contains a linestring as shown in the image. Each shapefile is represented as its own layer in QGIS. I would like to union these linestrings into one polygon which ...
0
votes
1answer
19 views

How to join multiple lines (branches of a large stream network)

I've generated a channel/stream network based on a DEM, but each branch of the network is split into very small lines. I'd like to have the network divided into as few separate lines as possible, so ...
0
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1answer
44 views

Merge two points of two different polygons to get one polygon at the end

I would like to join points from two different features. I already searched for plugins but so far but didn't find one working plugin or solution for my task. So here is a picture of 2 ...
2
votes
1answer
50 views

Error message trying to merge Shapefiles in Python

I try to merge all Shapefiles from one folder together into one, using this: shapeList = arcpy.ListFeatureClasses() print shapeList for fc in shapeList: if fc == "*domain*": ...
1
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0answers
22 views

combine multiple geojsons

I have several geojsons which contain polygons. But the polygons are reaching over other geojsons. When I import them into lets say Qgis, the polygons, which are distributed among several geojsons are ...
2
votes
1answer
57 views

Merge multiple bus stops with same name

my question is similar to this one, but it's not answered sufficiently: How to merge points (bus stops) in QGIS manually or programmatically? I have OSM-transit data with bus stops. Some stops have ...
0
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1answer
62 views

Merge layer files in folders and subfolders with arcpy

I work with arcview 10.3. I try to merge layer files in order to get one layer file that include all the features in the other layer files. All layer files as different names, and they all spread in ...
0
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1answer
70 views

Merge shapefiles in folders and subfolders with arcpy

I try to merge 20 shapefiles in order to get one shapefile that include all the features. All shapefiles are called "migrashim", and they spread in big folder that divided to a lot of sub folders. ...
2
votes
1answer
43 views

Difference between: join, merge and group

Suppose it is desired to make polygons A and B, and their respective attributes to be one unique polygon C. What is this GIS operation called? Is there any difference in GIS terminology about ...
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0answers
30 views

QGIS polygon - filling a polygon gap

I do not use Python, I'm afraid. I need to fill in a polygon gap for this map of Scotland. Here is the gap: How do I fill in this gap? I have already tried drawing another polygon inside the gap ...
2
votes
1answer
47 views

Merging Only Selected Lines in ArcGIS for Desktop?

Working in ArcGIS 10.1 for Desktop, is there a way to only merge selected lines from a layer? For example, I want to merge these three red lines (all from one layer).
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0answers
34 views

Python scripting error (merge)

I've been trying to use this code to add a field to, merge, and sort multiple feature classes: import arcpy, os arcpy.env.workspace = r'W:\S&P\s&p ...
1
vote
2answers
111 views

Python scripting for feature classes (loop, sort, merge, and replace)

This is what I have to accomplish using a python script for ArcGIS 10.1: Loop through all feature classes and first add a field, then write the name of the feature class into the added field. Merge ...
0
votes
1answer
46 views

Merging multiple feature classes into one using Python

So I have feature classes from an ArcGIS database that I renamed using this Python code: But now I have to merge all the feature classes that are output from this into one feature class named ...
1
vote
1answer
16 views

Eliminating pixels of a Merged image

I need to change the value of pixels that where created in an image as a result of merging 2 rasters, this new pixels have a value of 0. The problem is, that there are pixels with 0 in the original ...
2
votes
1answer
66 views

FieldMap in Arcpy Merge for Selected Fields Only

I am trying to use FieldMap in arcpy to merge only a few of the same fields from 8 feature classes. There are many different fields in all of the different feature classes, but I have identified the 9 ...
2
votes
2answers
73 views

Merge layers and fill gaps

I have 14 layers, which are polygons. They represent the channel of a river at different periods. I need to fill the gaps that exist once I overlay the polygons, but I can't change the properties of ...
2
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0answers
29 views

Trouble merging 2 rasters using qgis

I am trying to merge two rasters using the "merge" tool on Qgis 2.6. Qgis does complete the process, but the resulting image only shows one of the two rasters with the rest of the extent with really ...
2
votes
2answers
111 views

How to merge same long lat points with different data into a unique one?

I have a layer where there is more than 1 feature for a same object. Imagine i have a layer called signals. There can be up to 10 features in the same place (long/lat) for a unique signal but the ...
3
votes
0answers
67 views

Merge Raster Layer Specific Order in Graphic Modeler

I'm using the Graphic Modeler/Processing Modeler to automate a process. The last step in this process is Merging three different Raster Layers. I'm using the "Merge Raster Layers" from Saga 2.0.8. ...
2
votes
2answers
70 views

Shapes not matching number of records

I am trying to merge features (polygons) from 7 subregions in ArcGIS (v10.x). Merge goes fine but when I do any other process on it (e.g. Adding a field, calculations etc), the merged file is ...
2
votes
0answers
130 views

PostGIS: Merge any and all adjacent polygons

I would like to do adjacency tests on a parcel (polygons) layer and merge them if they fit certain criteria (could be size). Per the picture below, I would like to merge polygons 1,2,3 and 4, but not ...
2
votes
1answer
47 views

Combining many polygons from multiple datasets into one raster

I am a beginner in ArcGIS. I have a query regarding merging many polygons to form one big polygon, and then rasterizing it. The polygons are from varied datasets and represent different ...
2
votes
1answer
92 views

Merge tif files with python

I'm also having problems with running gdal_merge.py within another python script and I cannot run it. I already checked a similar problem here. My example is as follows: First I set my workspace and ...
2
votes
1answer
54 views

QGIS: How to merge single polygons to multi part polygons by maximum distances?

I have a polygon layer with a land-use class and ID for every polygon. How can I merge polygons (into multi part polygon) which do not adjoin, but are not further than x meters apart from each other. ...
1
vote
1answer
50 views

Problem Merging two line segments

I am using ArcMap 10.2 and merging several line segments with the same ID. Most of the time this works fine and I end up with one segment. (about 95% of the time) However, occasionally the segments ...
1
vote
1answer
94 views

Why does one polygon disappear when merging in edit mode?

I want to merge some polygons into one using the merge tool. But when doing so, one of the polygons just disappears (see screenshot 2). Why does this happen? When I use the simplify tool before, it ...
2
votes
2answers
155 views

merging raster aerials in QGIS issue

I follow the instructions here very closely and yet every time QGIS gets caught in a loop. It takes a few small rasters totally less than 100mb and creates HUGE gb files and will not stop until ...
1
vote
4answers
106 views

How can I join all data of two raster datasets in ArcMap 10.2?

I have two raster datasets in ArcMap10.2. One is displaying rails and one that is displaying a 100m Buffer to both sides of it. My cellsize is 100x100m. What I want is to combine the rails AND the ...
1
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0answers
23 views

How to merge DMAs using QGIS — Creating Custom Regions?

What I am trying to do might seem basic, but bear with me as I am just hacking my way through a lot of this space. What i am trying to do: I am trying to create a new .shp file of custom regions. ...
1
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1answer
114 views

How can we merge the two selected features in a vector layer

I have taken one feature and find which are the neighbouring features to the feature which i have taken and then i have combine all those neighbouring features with my feature to make one feature. i ...
5
votes
2answers
269 views

Correctly merging DEM rasters and eliminating edge effects

I'm using 10m DEM rasters from the NRCS Data Gateway for a large portion of California. The problem is some strange tiling that appears after merging, but isn't present in the original data (before ...
3
votes
1answer
285 views

How do I merge DEM rasters correctly?

I've been struggling with this problem for awhile. Here is a curvature raster to illustrate the problem. I'm using 10m DEM rasters from the NRCS Data Gateway for a large portion of California. The ...
4
votes
1answer
159 views

Why are my calls to SAGA routines in QGIS not working cross platform?

The ability to write and run cross platform scripts for QGIS using python is OUTSTANDING! However, when I try to run the SAGA:MERGESHAPESLAYERS algorithm from a python script it works fine in windows ...