Questions tagged [merge]

To combine two or more parts into a larger whole.

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Connect touching lines by condition using expressions in QGIS

I have a polyline layer (Layer_A) in QGIS that represents entities (street crossings) that either consist of a single feature or are split into two or more features. The entities may also touch at ...
winnewoerp's user avatar
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ArcGIS Pro 3.1.2 change only blank selected cells in attribute table

I am using ArcGIS Pro 3.1.2. Is it possible to change only the null values cell in a selected dataset? I could have export the selected features as a new shapefile. Select the null values and replace ...
GIS Noh's user avatar
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Unable to merge Gebco_2023 data

When I try to merge my gebco_2023 raster I get error message. I am looking through the documentation but can't seem to find any info on why my merge might be failing. I first tried with the netcdf, ...
QGISstudent's user avatar
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How to merge sample points that are within a certain distance of each other and calculate mean attributes values for merged points in QGIS?

I have a data set like the following in .csv: sample latitude longitude variable1 variable2 variable3 A 37.18 -115.85 1 0 0 B 37.18 -115.85 1 0 0 C 37.18 -115.85 1 0 0 D 39.44 -117.66 0 1 0 E 39....
goshawk's user avatar
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Using data points lying within certain isochrone to model walking routes in QGIS

I am trying to model the routes students take to university on foot using QGIS. I have the student data in point form, but this is the student data for the whole city. I also have an isochrone which ...
jd6915's user avatar
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Rasterizing raster layers with style

I am merging some old maps with the georeferencer tool. but there are gaps on the edges of the old maps. These gaps can overlap the other map when merging the maps. As a solution I made the white ...
firstlord's user avatar
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Merge two GeoJSON files into one creating connection between parcel info and object info

I have two GeoJSON files, one with parcel info (multiplygons) and one with object on the parcel info (multipolygons). The files have exactly the same attributes. What would be the best way to join ...
zizu 112233's user avatar
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ArcGIS Pro 3.2 fill gaps line section using another line layer

I extracted two lines layers of road condition. One was surveyed when the roads were dry. The other layer is when the roads were wet. The dry layer has some gaps And I want to fill these gaps with the ...
GIS Noh's user avatar
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Treat overlapping pixel when doing merge GeoTIFF images using Rasterio

I have a list of GeoTIFF images. I would like to merge these images together. However, as my understanding, it will take in turn the file and at overlapping pixels will receive the values from the ...
Sang Truong's user avatar
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Merging multiple records into 1 record, group by field ‘group’

I have a point geometry file (GeoPackage) which I am working with in QGIS. It contains tens of thousands of records which discuss the topic 'Mineral occurrences'. Within this point file exist ...
FlyHi's user avatar
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QGIS: Merging neighbouring polygon leads to multipart polygon

I have to merge a lot of neighbouring polygons and for some of them I always end up with a multipart polygon even though the two polygons share multiple vertices and edges without space in between. ...
michafranz's user avatar
2 votes
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Merging multiple records into 1 record, group by field 'group'

I have a point geometry file (GeoPackage) which I am working with in QGIS. It contains tens of thousands of records which discuss the topic 'Mineral occurrences'. Within this point file exist ...
FlyHi's user avatar
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Merging features on the same ID but other attributes combined [closed]

I have a layer with data: ID | Attribute1 | Attribute2 1 x b 2 x c 3 y d 4 y e 5 z f I want to dissolve ...
Lutu's user avatar
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Merge overlapping rasters but preserve all original values (R)

I have a SpatRasterCollection, each raster of which has the same resolution and the same set of variables. Some of the variables are numeric and some are categorical. And some cells of some rasters ...
jccborders's user avatar
2 votes
1 answer
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How can I merge two line layers correctly for network analysis in QGIS?

I have a graphical model in QGIS that takes a basic sidewalk network (derived from OpenStreetMap data where separate sidewalks geometry exists) and adds additional crossings automatically. As a last ...
winnewoerp's user avatar
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Merging a DataFrame with a GeoDataFrame based on two keys

I have a GeoDataFrame called gdf_points with a list of POINTs: index NAME geometry 1 A POINT(A) 2 B POINT(B) And another DataFrame called df_names in which each POINT is associated with possibly ...
Omer Tzuk's user avatar
1 vote
2 answers
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GDAL remove nodatavalues from output for COG format

I need to remove the nodata values from the final mosaic of Sentinel-2 data. Here is the process I apply to each single file: gdalwarp -t_srs EPSG:4326 -srcnodata 0 input.jp2 output_warp.tif ...
Monica Rossetti's user avatar
1 vote
1 answer
62 views

Voronoi polygons along given border in QGIS

I have a shapefile that contains districts (polygons) of a country. I added centroids to each district in order to create Voronoi poylgons around them. On this new layer, the outlines of the Voronoi ...
Ann's user avatar
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Result of merge in QGIS is image that doesn't contains all the merged raster

I'm trying to merge ~10 rasters that I have on qgis. Each raster has 2 bands.The rasters overlap each other, and their no-data value is -9999. This is how all the rasters look like before merging (the ...
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QGIS - Merging polygons based on distance

How can I merge not overlapping polygons? I'm trying to set up a model that merges polygons that are within 500m from each other, at closest edge of the polygon. I have tried with shortest line ...
Endre Aaen's user avatar
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Merge file of certain coordinates to shapefile of cities using ArcMap

I am using ArcMap 10.8. I have a shapefile of cities with their info like name, population and area so I have calculated each city's density of population. Now I have some certain coordinates and I ...
Fatima's user avatar
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Merge downloaded mbtiles

I would like to download the data of the whole world (or at least a continent) as mbtiles from the 2nd zoom level to the 12th zoom level using OSM or ESRI Topo Map and use it offline. But I can only ...
Ecem's user avatar
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ArcGIS Pro: merge small polygons with their larger enclosing polygons

Polygons with an area size below a certain threshold should be merged with their enclosing polygons within the same layer. The image shows several cases in one example: in case of a threshold of 700, ...
stonebe's user avatar
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2 votes
1 answer
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How to merge raster classes using the raster calculator?

I need to do an analysis on landscape change for which agriculture is involved. In my raster they are defined as six different classes which is not relevant for my research I was wondering if you can ...
Hartje's user avatar
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3 votes
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How to merge lines with close coordinates into one line in PostGIS?

The database contains a collection of lines, which have pretty close coordinates (see red lines in the picture). Is it possible to merge these lines and create only one line, that is median of the 3 ...
Slava's user avatar
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Joining polygons touching and merging in one

I am working in QGIS, doing research in different types of forest reserves. I've got this layer of reserves which are for some reason divided into a lot of small polygons (image below). I want to ...
BlaZF's user avatar
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Mosaic to New Raster output discolored

I am attempting to mosaic 3 .tif files together using the Mosaic To New Raster tool in ArcGIS Pro. However every time I run the the tool the output comes out discolored (see attachment). I have ...
Robbie-G95's user avatar
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Cannot join LAS file In QGIS with Whitebox Tools

I have 9 .las files that I am trying to join into a single .las file in QGis. I have been using Whitebox tools plugin in QGis and when I try to select all the files and assign an output file if get ...
proffarnsworth's user avatar
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Download GLOBathy TIFFs by country rather than one at a time

GLOBthy seems to be a very useful resource for studying lakes worldwide, however it has one significant problem; every lake is saved as different TIFF,and apart from a few large lakes, none of them ...
Birdman's user avatar
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How to merge two *.gml files with different geometry types into one gml file

I have two gml files one contains linear data and the other one contains polygon data. I want to have the correct ogr command to merge the two gml files into one file. I found this answer from 2012 ...
milad's user avatar
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2 votes
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Merging polylines to next one in QGIS

I'm working with QGIS and I'm not super familiar with that. I created a Shapefile with several polylines. In some cases, my polylines do not match each other directly. For further proceedings, I would ...
Sulz's user avatar
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2 votes
1 answer
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Merging overlapping parts based on priority in QGIS

Let's say I have two polygons for Protected Areas in my country, one for a National Park and one for a National Forest and they have an overlapping part. I want a tool that removes this overlap from ...
Juan Orozco's user avatar
2 votes
1 answer
133 views

QGIS Raster Merge - Change in the band values problem

I have two raster files and I want to merge them in QGIS. The first raster has values between 0 to 8627 and the second one has 0 to 9118. However, when I do it with the Merge tool (in GDAL/raster ...
Gencergis's user avatar
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1 vote
1 answer
114 views

Merge overlapping portions from two polygons to one or the other using FME

I have a shapefile with many polygons, of which some portions overlap. When I use the AreaGapAndOverlapCleaner, it disconnects the overlapping portion, but makes it an independent feature with data of ...
SaFaL's user avatar
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2 votes
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QGIS 3.26 - Merge selected features

If I use merge selected features, the rule is that the data is automatically taken from the features with the lowest ID. I know that I can manually choose which features to download data from. But is ...
dysano's user avatar
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Deleting borders from merged layers in QGIS

I merged more layers together but I need to delete these borders. It is possible?
Jozef Hiľovský's user avatar
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30 views

Merging two raster .Tiff files

I have two raster .TIFF files, one with a spatial resolution of 90x90 meters (name:A) and one with spatial resolution of 30x30 meters(B). The A has a spatial extent of south east Asia whereas B is ...
Cynthia Fowler's user avatar
1 vote
1 answer
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Merging polygons with adjacent polygons using QGIS

I am using QGIS (version: 3.28) and I am looking for a way for an automatic spatial generalization of polygons: Step: Merge adjacent polygons of same class (e.g. class "Grünfläche") Step: ...
Mat Thias's user avatar
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QGIS 3.28.7 Split merged line network to surveyed lines network

I need to create a shapefile of unsurvey road section in the network. I am using a surveyed layer (Lines) that does not overlap on the network. It is just parallel. I tried the select by location ...
GIS Noh's user avatar
  • 191
1 vote
2 answers
153 views

Superimpose two shapefiles in R

I have two shapefiles, one for provinces: library(sf) library(ggplot2) prv_shp <- read_sf("decoupage/Provinces_2015.shp") prv_shp |> ggplot() + geom_sf() + theme_bw() and one for ...
Saïd Maanan's user avatar
1 vote
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52 views

Transfer attributes from inner polygons to surrounding polygons on other layer in QGIS

I have a vector polygon grid and multipart building polygons (one selected for demonstration) already cut to grid size. How do I get all the attribute data from the buildings into the grid layer? I'm ...
winnewoerp's user avatar
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2 votes
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QGIS - Linking origin and destination points with nearby routes (vectors) [closed]

Context Dataset A contains the origin and destination coordinates of trips made by car in CSV format (n=~1M). Dataset B contains public transport routes for the same area in vector format (GPKG with ~...
Smoon5000's user avatar
1 vote
0 answers
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ArcGIS Pro: Merge tables of geodatabases including existing joins

Is there an option to keep existing Joins for the output of the Data Management > Merge process applied on multiple geodatabase files? I have multiple geodatabase files *.gdb with the same ...
stonebe's user avatar
  • 445
-1 votes
1 answer
203 views

Create one continuous polygon from many polygons with holes in QGIS

How can I create one single continuous polygon from many polygon and the gaps will be preserved? So whole polygon will be connect into one big single polygon. Using the dissolve tool will not connect ...
Gajer's user avatar
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2 votes
1 answer
121 views

Passing output of the processing tool to QgsVectorFileWriter using PyQGIS

Is it possible to pass Processing Tool native:mergevectorlayers to a QgsVectorFileWriter.writeAsVectorFormatV3 object output_folder = r"/home/cirrusklaus/Downloads/tmp/csv/" options = ...
Klaus's user avatar
  • 329
1 vote
2 answers
327 views

Mosaic and merge rasters iteratively using R raster package

I have a list of RasterStack objects. Some of them overlap and some of them do not. I need to merge all the files into a single RasterStack object to finally export it as a GeoTiff file. My approach ...
sermomon's user avatar
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2 votes
0 answers
119 views

Merge the information of two bands in one single "Raster layer unique value report" in QGIS

I have two raster layers that occupy the same area, one for suitability (0-1) and one corresponding to energy output. I merged them keeping separated the information of both layers and now I have one ...
Pepa Perez's user avatar
0 votes
1 answer
164 views

Merge rasters with different extents and pixel sizes

Is there a way to merge rasters with different extents and pixel sizes, or change the extent and pixel sizes of the rasters so that they are equal when I merge them? Ideally in QGIS.
A_Student's user avatar
1 vote
0 answers
35 views

Combine a point dataset with multi-polygon dataset

Using QGIS, I need to combine a point dataset with an associated multi-polygon dataset, and clip away any of the polygons which do not have an associated point, please see image attached. The point ...
Techtix's user avatar
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1 answer
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Merge function failed to conduct on GEE

I want to merge two ImageCollection on GEE simply with merge() function . According to the document on GEE website (https://developers.google.com/earth-engine/apidocs/ee-featurecollection-merge), I ...
Lin Annie's user avatar

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