Questions tagged [merge]
To combine two or more parts into a larger whole.
1,213
questions
1
vote
1
answer
47
views
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 ...
- 1,332
0
votes
1
answer
21
views
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 ...
- 191
0
votes
0
answers
24
views
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, ...
1
vote
1
answer
52
views
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....
- 53
1
vote
0
answers
27
views
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 ...
- 11
1
vote
1
answer
47
views
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 ...
- 149
0
votes
0
answers
23
views
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 ...
0
votes
0
answers
19
views
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 ...
- 191
1
vote
1
answer
44
views
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 ...
- 57
0
votes
0
answers
33
views
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 ...
- 29
0
votes
0
answers
46
views
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. ...
2
votes
1
answer
90
views
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 ...
- 29
0
votes
1
answer
45
views
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 ...
- 31
0
votes
0
answers
49
views
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 ...
- 25
2
votes
1
answer
83
views
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 ...
- 1,332
1
vote
1
answer
65
views
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 ...
- 35
1
vote
2
answers
72
views
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
...
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 ...
- 13
0
votes
0
answers
24
views
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 ...
- 2,047
0
votes
1
answer
46
views
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 ...
- 113
0
votes
1
answer
37
views
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 ...
- 11
0
votes
0
answers
77
views
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 ...
- 1
0
votes
0
answers
48
views
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, ...
- 445
2
votes
1
answer
78
views
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 ...
- 123
3
votes
1
answer
83
views
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 ...
- 65
0
votes
1
answer
59
views
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 ...
- 11
0
votes
0
answers
17
views
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 ...
- 163
0
votes
1
answer
87
views
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 ...
1
vote
0
answers
51
views
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 ...
- 61
0
votes
1
answer
75
views
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 ...
- 679
2
votes
1
answer
48
views
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 ...
- 144
2
votes
1
answer
33
views
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 ...
- 29
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 ...
- 109
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 ...
- 19
2
votes
0
answers
48
views
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 ...
- 41
0
votes
0
answers
47
views
Deleting borders from merged layers in QGIS
I merged more layers together but I need to delete these borders. It is possible?
0
votes
0
answers
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 ...
1
vote
1
answer
82
views
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: ...
- 89
0
votes
0
answers
37
views
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 ...
- 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 ...
- 95
1
vote
0
answers
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 ...
- 1,332
2
votes
0
answers
49
views
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 ~...
- 21
1
vote
0
answers
46
views
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 ...
- 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 ...
- 15
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 = ...
- 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 ...
- 1,104
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 ...
- 21
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.
- 11
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 ...
- 11
0
votes
1
answer
179
views
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 ...
- 29