Questions tagged [merge]

To combine two or more parts into a larger whole.

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Combine multiple TIFF Files into one

I have brought in multiple TIFF (raster) files into QGIS and want to combine them into one file. I tried this by going to Raster> Misc.> Merge. When doing this the output file comes out as gray and ...
3
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2answers
271 views

To compare and merge two point layers based on lat long

I have 2 shapefiles of point type. Both layers have lat/long associated with each point. In one shapefile, I have about 23 hundred thousand points and in another about 20k points. Because the first ...
3
votes
1answer
991 views

How to merge raster with FME with different spatial resulution?

I have two sets of raster (tiff, aerial photos) which I want to merge to one raster file with FME. The two sets have different spatial resolutions. Set A has a better resolution as B. The two set do ...
3
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1answer
1k 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 ...
3
votes
1answer
4k 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 ...
3
votes
1answer
574 views

Merging ShapeFiles with QGIS for UK counties

I want to draw a map for all the counties of the UK including Northern Ireland. Since I cannot find a source of counties including both Northern Ireland and Britain, I tried to merge two shapefiles ...
3
votes
2answers
441 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
2answers
542 views

Pyqgis How to merge all the active layers? or layers in the registry?

I was wondering if there is a way to merge multiple layers. I actually would like to merge all layers in the registry programmatically, all of them are point layers and have the same fields. I have ...
3
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2answers
77 views

Merging DEM and DSM into single raster

First things first, I am completely new to this so please bare with me if this is a bit unclear as I lack the vocabulary. I have two raster layers (a DEM and a DSM). The DEM layer covers a large ...
3
votes
1answer
56 views

Gaps in polygon after merging

When I use the merge tool on this polygon mesh, I end up with a multipart polygon with large gaps. Before this, I was getting an error when trying to run a merge or dissolve because of "Polygons with ...
3
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1answer
182 views

Merging all vector files within directory with QGIS?

I am unsuccessfully trying to merge all shapefiles in a given directory using QGIS 2.18. I do not want to navigate to the folder using QGIS GUI tools. Instead, I want my script to include all ...
3
votes
1answer
394 views

Dissolve (merge) polygons QGIS based on attribute values only when are adjacent

I am a fairly new user of QGIS having a question regarding dissolve functionality. I am working with the NUTS-2 shapefiles provided by EU, which I have imported in QGIS. I have created a new layer ...
3
votes
1answer
594 views

PyQGIS code for Merge Vector Layers

I've been trying to automate the merge vector layers via PyQGIS but I can't seem to get it right. This is my code: import os import processing loc = r"C:\Users\loc" os.chdir(loc) shapelist = os....
3
votes
1answer
283 views

Merging SRTM rasters that include sea pixels in QGIS?

I was trying to merge a bunch of SRTM rasters in QGIS as I've always done, but this time some of the rasters included large areas of pixels in the sea. The result is that only pixels near the shore ...
3
votes
1answer
626 views

Merging multiple vector layers to give a multicoloured output map

I am currently working on a project: Freshwater Vulnerability Assessment of sub-Saharan Africa. I have 5 sets of freshwater vulnerability categories which i have managed to represent on QGIS as five ...
3
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2answers
2k views

How to mix two raster in R (same extent)?

I want to produce one PNG image for each country in the world. The pixel colors come from a raster that describes the vegetation, and the boundaries of the countries come from a shapefile. I managed ...
3
votes
1answer
777 views

Merging shapefiles with PyQGIS

I've been searching the internet for a while now trying to look for a way to merge all the shapefiles from a directory (a folder) into a single shapefile. I found many solutions but none of them seem ...
3
votes
1answer
889 views

Merging two adjacent polygons which borders are not touching each other?

I want to merge adjacent single polygons which are apart from each other. Important note: I cannot use ArcGIS, I need to do this programatically, in any language (R, Python, Ruby, PostGIS) doesn't ...
3
votes
1answer
213 views

How to reference all the shapefiles within a Windows folder and merge them in ModelBuilder?

I have a group of shapefiles that are stored in a Windows folder. There are multiple users that will be adding shapefiles to this folder or editing existing shapefiles in this folder on a continual ...
3
votes
1answer
984 views

Merging DBF files without using ArcPy? [closed]

I have ~7,000 2 line dbf files (zonal stats output) that I would like merged into one table, all the same format. I have used the arcpy merge tool, as seen below. #merge tables together ...
3
votes
2answers
2k views

Stratified Random Sampling with large dataset in ArcGIS?

I want to create a Stratified Random Sample with a land cover classification map. The purpose for the Stratrified Random Sample is to produce an Accuracy Assessment. I am using ArcGIS 10.2 with access ...
3
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4answers
7k views

Mosaic to New Raster tool fail

I'm trying to merge 24 DEM files, after applying the tool (Mosaic to New Raster) only 11 out of the 24 merged. All the original files are in the same projection, pixel type, band, etc. I also ...
3
votes
1answer
3k views

How to “Merge Selected Features” with python?

I have been looking for the answer to this question for some time now, but can't seem to find it! My problem is straight forward: I have one layer It contains lots of features (only polygons), say ...
3
votes
3answers
180 views

Automated way to join

I have river networks (polyline) of several adjacent countries as shapefiles that almost match up at the borders, but not quite. Is there any way to automatically connect them to a consecutive river ...
3
votes
1answer
1k views

Merge selected features and programming

I have a shapefile with UK districts and unitary authorities. In the past, using commuting patterns, I worked out a new geography which is close to travel to work areas. I now would like to create a ...
3
votes
1answer
648 views

How to combine lines from different sources reperesenting the same road network but with slightly different geometry?

I have got two layers of polylines which represent the same road network but they are from different sources and have different geometry. The two layers are mostly the same tracks with larger or ...
3
votes
1answer
726 views

Merging a geodataframe and pandas dataframe based on a column

I have a simple geopandas dataframe that includes geometry and a column called 'MUKEY': merged_spatial_df.head() I want to merge it to a tabular (.csv) pandas dataframe (which also has a column ...
3
votes
1answer
98 views

Merging or joining two tables with some matching columns in QGIS to calclulate unique values

I have two tables (A and B) that display the presence or absence of a species within a polygon and within each polygons associated buffer layer. The purpose of the buffer layer is to account for a ...
3
votes
2answers
56 views

Are there different definitions of “merge”?

The merge tool in ArcGIS ArcToolbox is used to combine two layers, but it seems that there is also a Merge option under Modify Features that is used to combine and dissolve adjacent features within a ...
3
votes
1answer
69 views

Copy elevation from points to line

I have a vector line, but it has no z-dimension. I have some points along the line, which have the elevation included. Can I add the elevation from the points to the line at that specific point? ...
3
votes
1answer
80 views

Assigning existing geometry to another layer in QGIS?

I have several line layers that run parallel to each other and would like to assign the geometry of the central line to all the others without losing information in the attribute tables. Is there a ...
3
votes
1answer
393 views

Problem merging multiple paths of KML files (saved as SHP) in QGIS

I have several KML files (trail01.kml, trail02.kml etc.) each containing multiple paths (about 30) created in Google Earth. I have opened them in QGIS and saved them as SHP (trail01.shp, trail02.shp ...
3
votes
1answer
236 views

Joining postcodes to coordinates in a .csv file

I have a .csv of land registry sales data that includes full addresses and postcodes. I'm trying to geocode all the data so that I can plot it in QGIS but my issue is that I have 2 million records ...
3
votes
1answer
113 views

Representing multiple polylines in unique vector layer?

I have imported a layer which contains a lot of lines. They overlap each other in a cross kind of pattern. When zoomed out it can look like this: When zooming in on one of the broader lines it looks ...
3
votes
1answer
451 views

Merging shapefiles with DBF file, error with duplicate values

When I try to merge my household data file in a .dbf format with my shapefile by using key variable, I get the following error message: Chosen table merge key field IL contains undefined or ...
3
votes
1answer
47 views

QGIS: Mergin two layers always creates new attibute field

I want to merge several layers into one. Each layer has a specific Attribute field (type: GG, DO, eg.). In the merged layer QGIS produced a new Attribute field for each type. I want QGIS to but all ...
3
votes
1answer
2k 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" ...
3
votes
1answer
625 views

Iterators in model builder - merging nested files with same filename ending

I am trying to merge files that are nested in different folders by their file names. For example folder 1 contains up to 100 subfolders that each contain a set of shapefiles: subfolder1_A.shp, ...
3
votes
1answer
764 views

Merge 2 Pointlayers with same coordinates but different attributes in QGIS?

I have two layers with points who have exactly the same coordinates but different attribute fields. I would like to merge the tow layers so that I only have one point at each location who has the ...
3
votes
1answer
694 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*": arcpy....
3
votes
1answer
518 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 ...
3
votes
1answer
870 views

Merging .dbf Tables in Python w/o merging all fields of same name

I'd like to merge several tables together using Python. They all have the same field names: "TIME", "X", "Y", and "VALUE". I would like the "VALUE" fields to remain separate when merged, so that the ...
3
votes
2answers
961 views

Merging DEMs of different grid size

I'm trying to merge two grids with different cell size. One has a cell size of 10m and the other 50m. The 10m one covers a subarea of the 50m one. I know that the most accurate one is the 10m one and ...
3
votes
1answer
4k views

Merge multiple feature datasets while maintaining shapefiles for respective point, line, and polygon files nested ArcGIS

I've been doing some digging and a few days of playing around with my data in ArcInfo but I haven't been able to find a solution to merging datasets, which consist of many different point, line, and ...
3
votes
1answer
3k views

How to merge several google map images into one?

I want to have a high resolution aerial photo of a catchment area. I took some images from google maps and georeferenzed these and saved them as a layer file. but how can I merge them now that I have ...
3
votes
1answer
312 views

shapefile batch clip and merge combined

I have two shapefiles, one is polyline, the other polygon. For each polygon I would like to clip the polyline vectors inside. Using arcpy I already found part of a possible solution: https://gis....
3
votes
2answers
121 views

How to merge overlap polygon respectively in one shapefile in QGIS

I want to merge the polygons of one shapefile if they overlap, but I don't know what to do. I try'dissolve' but get only one final polygon. This is not what I need. I want to merge them respectively.
3
votes
2answers
150 views

Merge shapefiles with common field

I'm trying to merge several shapefile layers. Each of the layers has three attributes: CGRSName: Name of the grid cell (same for each shapefile) CGRSType: explains the type of grid (not important ...
3
votes
1answer
62 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 ...
3
votes
3answers
82 views

Dissolving polygons when only relationship is spatial location?

I have a feature class with parcel information; some of the parcels have roads included while others do not. When a parcel has a road included there is always a matching parcel without the road ...

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