To combine two or more parts into a larger whole.

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56 views

Merge adjacent polygons

I want to write software that merges groups of (mainly) adjacent polygons. For example, merge the US counties into sales regions. Then, display either the boundary of these sales regions or fill them ...
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1answer
43 views

Merge several .lyr files that contain a raster photo column

Shapefiles do not support raster files, so I created a geodatabase and made feature classes of the points. I then added a column titled "photos" and added the photo as a raster to the point. I now ...
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1answer
99 views

How to merge two point feature classes based on spatial location using ArcPy?

I have two point feature classes, each containing about fifty points. These 2 point feature classes should be merged, or the points of feature class 2 added to feature class 1, as feature class 2 does ...
3
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1answer
122 views

How to merge layers into a single QgsVectorLayer?

I have a set of different layers (and their respective shapefiles) with information of electric lines. All the layers have the same Fields in their Attribute Tables, but contain information about ...
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2answers
181 views

gdalwarp - merge two images, but only the no-data values

I am preparing tiff elevation files. For one particular country I have a 10 meter elevation model, but the data is present only for the specific country - so when the image is sliced into smaller ...
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2answers
117 views

How to Merge, Buffer, and then Intersect multiple features based off of the Buffer feature in ModelBuilder

I have created what I thought to be a simple ModelBuilder model and the final output (.shp format) is always an empty. As you will see in the ModelBuilder image below: Merged 3 track logs now called ...
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0answers
20 views

Making Merge Tool run just once in ModelBuilder? [duplicate]

I have dozens of point shapefiles I want to merge. First I used the Feature Classes Iterator and declared the iteration output as input for the merge tool directly, the problem was that it merged the ...
4
votes
1answer
133 views

Merge connected lines IF they share adjacent polygon(s) (arcgis/arcpy)

I have lots of lines that I need to merge IF and only if they share the same polygon(s). All lines are made from the polygons (copy-paste into line) so they all snap. In this little example line ...
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1answer
525 views

Different origin problem while merging rasters

I have two dem files downloaded via the getData function in the raster package. Here you can see the code: I tried to make the example reproducible so there you have it. library(raster) dem_n1<-...
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1answer
135 views

Using lasmerge in QGIS 2.8.3 is not working: “…instance has no attribute”

Every time I try running lasmerge tool from LASTools within QGIS, I get the following error message: Algorithm lasmerge starting... lasmerge instance has no attribute '...
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2answers
112 views

PostGIS - Merging linestrings into multilinestrings in a particular order

I have a set of linestrings, which I want to group into a single multilinestring, and in a specific order. However, when I use ST_Collect, it merges them out of order, like this: Geometries as ...
1
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1answer
44 views

using arcpy.Merge_management

This script should make a field for all the feature classes in a geodatabase, populate the new field with the name of the feature class it's being created in, and then merge all the feature classes ...
2
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0answers
58 views

Fixing undesirable lines between tiles from SRTM contour line extraction?

I'm trying to make a South American topography map based on SRTM data on QGIS. The problem is a visual one. If the topography contours are extracted from individual SRTM tiles, it results a little ...
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2answers
102 views

Fast way to merge 8000 raster?

I have to merge almost 8000 rasters (TIF). I tried using Mosaic To New Raster in ArcGIS 10.3, but it's processing really slowly and crashes quite often. Is there a faster (or more stable) way to ...
3
votes
2answers
147 views

How to Merge dbf files?

I'm beginner in python and learning it with examples. I have 100s of dbf tables like Type value1 value2 Type value1 value2 A 3 1 and A 5 7 B ...
1
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1answer
34 views

error when merging geotiffs

I have a problem with a actually simple task: I want to merge 12 Geotiffs in QGIS. With Raster => Miscellaneous => Merge there is always an error saying: xyz.tif does not exist in the file system, ...
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0answers
28 views

How to merge shapefile data and pick out what has changed in QGIS?

I work for a conservation charity just starting to use QGIS. I am starting to think about how to consolidate GIS shapefiles returning from different and separate project areas across the UK to be ...
2
votes
1answer
75 views

Merging more than 9 input files with lasmerge?

Is there a possibility to feed more than 9 LAS files to lasmerge tool? The user interface only allows 9 LAS files from LAStools toolboxes in QGIS or ArcGIS, but at liblas.org it’s described as there ...
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0answers
21 views

Merge without dissolve in ArcGIS for Desktop? [duplicate]

I am trying to merge several polygons in a feature dataset into one. Normally I would use a simple merge but the issue is that merge automatically dissolves. I on the other hand want to have them all ...
1
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1answer
77 views

How do I perform a Union (as per ArcGIS and QGIS) in MapInfo

I am running MapInfo 15.0 and need to perform a Union of two polygon layers (i.e. combine the two and preserve all boundaries and associated attributes). I know there is some ambiguity over the term ...
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2answers
317 views

How to batch merge shapefiles

I have a catalog tree with a number of subfolders. In every folder there is point and polygon shapefiles. What I want to do is for every type of shapefile point and polygon to do a merge by type. ...
1
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1answer
144 views

How to merge vector buildings height layer with raster DEM to get solar maps in r.sun in Grass GIS?

Welcome, this is my first post. I have vector layer with buildings heights and vector/raster DEM file. I need to create solar maps with sun radiance values on the roof (and on surface, ofc). I am ...
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2answers
46 views

Merge Ordnance Survey VectorMap District from different folders

I have four different folders with Ordnance Survey-Shapefiles from different regions. I want to merge all these files theme by theme (for example all buildings to just one shapefile). The problem ...
0
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1answer
56 views

Retaining UNIQUE attribute fields after dissolving a shapefile

I tried the solution to "Dissolving shapefiles but retain attribute fields" but my original shapefile (3000 rows in attribute table) has many duplicate values in the field that I want to retain so ...
2
votes
1answer
62 views

Change number of cells in raster using GDAL?

i have 5 raster files and i want to merge them to one file with exact 50x50 cells because i have an R script to process it later. I tried the ArcGIS function "mosaic to raster" but it delivers a ...
3
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0answers
126 views

Merge line segments by length (in QGIS)

I have a layer containing line segments which are connected by their endpoints (e.g. as within a street network). I'd like to merge (union) polylines within this layer into one feature until following ...
1
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1answer
61 views

Shapefiles failing to merge

I am attempting to merge two shapefiles together. Both are line features. I have merged these files before and it worked successfully however due to problems during editing I have to start again and ...
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0answers
185 views

Speeding up ArcGIS arcpy.Merge_management for MANY files? [closed]

I'm currently running a script that is using the arcpy.Merge_management function to merge roughly ~1500 shapefiles together. When I tried this with much smaller test runs, it ran perfectly. Now ...
4
votes
2answers
240 views

Shapefile Naming conventions in ArcPy?

I have shapefile named `band-tailed_pigeon.shp which is fine and no problem on displaying or geoprocessing on Desktop but in ArcPy when I try to merge some layes to it I am getting this error ...
2
votes
1answer
370 views

Debugging ERROR 000725: Output Dataset: Dataset … already exists?

Using ArcGIS 10.2 Desktop I am trying to run a Merge function by Arcpy as # Set environment settings env.workspace = "E:\\GIS\\ROR" path = "E:\\GIS\\Data\\" featureClass = "band-tailed_pigeon.shp" ...
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3answers
142 views

Merging XYZ's in ArcGIS Desktop?

I have like 6 .xyz files that are to be included in a single map (they sort of overlap). However, I'd like to save time and automatically merge them together through python code into one .XYZ before ...
1
vote
1answer
153 views

Dissolve overlapping polygons in R

Is there an analogue of ArcGIS Dissolve function in R? I need to dissolve the overlapping polygons and create a single part object. I was trying to use gUnionCascaded, but it creates a multipart ...
2
votes
1answer
49 views

How to merge new values only?

Using ArcGIS 10.3 Desktop. We have a single feature class within our geodatabase which is a merge of all the other feature classes in the geodatabase. I would like to build a model that we can run ...
2
votes
3answers
98 views

Dissolve without removing interior lines in ArcMap? [duplicate]

I'm fairly new to GIS and I'm having an issue that I hope someone can help me resolve? Basically, what I'm trying to do is merge features based on a single attribute so that my table no longer ...
1
vote
1answer
199 views

Merge layers (SAGA) ERROR

with QGIS 2.10 it is not possible to merge vector layers with the "Processing-Saga" tool (merge layers). The following error log comes up: Algorithmus Merge layers startet... shapes_tools "Merge ...
2
votes
0answers
120 views

How do you merge overlapping .asc files in QGIS with topography and bathymetry?

Firstly, apologies for any incorrect terminology - this is my first time trying to manipulate GIS data. I have two files. The first is higher resolution (SRTM) topography data for a region of islands ...
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0answers
190 views

Creating multipart polygons with ArcPy Dissolve? [closed]

I need the functionality of the editor > merge command for use in a python script tool. I realize this function is not directly accessible through ArcPy, but I am hoping someone can help with a work ...
6
votes
2answers
805 views

Merging multiple SpatialPolygonDataFrames into 1 SPDF in R?

I have created 2 polygons in QGIS. Using them in R, polygons become automatically SpatialPolygonsDataFrame (SPDF). I would like to merge them into single SPDF (as is super easy in ArcGis using Tool ...
0
votes
1answer
39 views

Merging buffers together with no fill colour? [closed]

I am a bit of a novice with GIS. I have created several 500m buffer zones around streets in GIS. I ultimately want a combined buffer so only the outside line that measures 500m away from all of these ...
1
vote
1answer
103 views

Merge a table with a shapefile (not the same dimension)

I am trying to merge a table with a shape file using R. The shapefile's database is bigger than the table and I need to have null or zero values where the two data sets don't match. Table data no. ...
2
votes
1answer
167 views

FME Proccess to merge two CSV files not working

I am trying to merge two datasets of golfcourse data with almost similar information. my end goal is to have all the data into one csv file that have merged information from both csv files. I have ...
0
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0answers
225 views

Combining tiff with shapefile

I have a geotiff image with a D_WGS_1984 Datum of land cover for the continental US and I want to be able to merge it with a US counties shapefile. What is the fasters and best way to do this? My ...
2
votes
1answer
133 views

Calculating area using dissolve and merge but getting shapefiles with empty attribute tables in QGIS?

I have a shapefile of a country with the 29 provinces. I also have shapefiles with the areas which are protected from construction (there are 4 categories for protection, within 4 shapefiles. Some of ...
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0answers
38 views

Error in merging two raster files (precipitation) in QGIS

The newly computed geotiff shows the extent of both raster layers, but only the data of one. If I use identify features tool it gives me only the values of the visible part not of the other part. I ...
0
votes
1answer
77 views

Merge shapefiles heatmap

I have to merge few shapefiles into one and create a heat map out of it in qgis. I'm a first user of the QGIS, I tried to do it there: vector-management tools-merge files into one, but it kept to make ...
2
votes
1answer
848 views

What is FME equivalent to ArcGIS Dissolve?

I am trying to dissolve polygons that are spread out across a region. ArcMap's ModelBuilder will dissolve these polygons into a single, multi-part feature. How can I get FME to do this same thing? I ...
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0answers
182 views

Using gdal_merge to merge a large amount of files (in pairs)

I'm new to python and how it can be applied to gis. I have a large amount of MODIS files to go through and I've already extracted, reprojected and converted to GTiff the bands that I need from each ...
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0answers
28 views

Calculate normalized summary

I am trying to dissolve polygons having unique values for var1 and then calculate values for var2 to var4. Following is the attribute table. Var2 to Var3 values are dependent on the area. Dissolving ...
1
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1answer
106 views

How merge osm files with same ID objects?

How merge many OSM files with same ID(between files) to one OSM file? I trying OSMCONVERT but he not add object with same ID in other OSM file.
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0answers
143 views

Merging polygons interactively in ArcMap using less clicks than Merge tool?

I am looking for an interactive tool which simply merges two polygon geometries by clicking on each polygon and nothing else. I need a workflow for a particular project-step which cannot be automated ...