Questions tagged [merge]

To combine two or more parts into a larger whole.

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481 views

Using GDAL or Python, how can I merge/combine 3 NITF images (RGB) into one image and keep the RPC metadata intact?

I'm looking to merge 3 imagery bands that are saved as separate files. The file format is NITF. The reason they are saved as NITF is because they have RPC metadata embedded into the images. I would ...
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46 views

Appending annotations changes the scale of the new annotation?

I am trying to append an annotation feature 1 (green)to another annotation feature 2(red). While these features are separate, I have the scale set to 1:4000, and the font size is correct. However, ...
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1answer
57 views

Merging on specific fields

Lets say I have three shapefiles/features I want to merge: 'florida.shp', 'mississipi.shp' and 'louisiana.shp'. They all have 3 standard fields common to all: 'DFIRMID', 'SFX', and 'FIRMPAN'. I want ...
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112 views

batch merge error: Error in match.arg(method) : 'arg' must be of length 1

I am attempting to read in a series of polygon shapefiles from a directory and batch merge them into a single shapefile. They all have the exact same field names. I am using this code: all_data <-...
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82 views

Python - Merge shapefile polygons based on criteria

I have a shapefile with thousands of polygons and would like to merge (join) adjacent polygons based on a threshold between attributes. I need to use python because I'm not allowed to use ArcGIS. e.g....
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269 views

Combine GeoJSON files into bigger shapes with external JSON to merge on

I have a shapefile of New York ZCTAs here I also have these neighborhood definitions that map zip codes to New York City Boroughs. I'd like to take my "all of New York zip code" data and: Clump up ...
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37 views

Convert shapefile to KML: KML polygons don't match shapefile

I've edited my shapefile quite a bit using the Cut and Merge tool (through the Editor toolbox, not the geoprocessing tool). It looks like this: For some reason, when I export the shapefile to a KML ...
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2answers
39 views

Merge Featureclasses if there is more than one in the FeatureClassSet

i want to check through all my gdb if a FeatureClassSet contains more than one FeatureClass. If so merge them and save the result in an other gdb otherwise just copy them to the gdb. It sounds really ...
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2answers
34 views

Merged vector layers in two seperate rows in attribute table QGIS

I merged two shapefiles together, with the same geometry: rain runoff data in a watershed population living in that watershed But when I open the attribute table, the information merged is presented ...
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1answer
38 views

Polygons split themselves when I zoom out

I've been having issues with polygons getting deleted and re-created in this layer, and also with polygons not merging the way I would expect. I thought I had everything fixed-- my topology check ...
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3answers
76 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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1answer
138 views

Removing black lines between merged tiles?

I merged several rasters, but there is a problem with lines between sheets. Raster is created from LiDAR datasets. Rasters were produced from different datasets via this application: https://iaps.zrc-...
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1answer
264 views

Combining multiple .tiff files obtained after download from Google Earth Engine?

I downloaded some of my classified images from GEE using the following script- Export.image.toDrive({ image: input.clip(district), description: 'Test', maxPixels: 499295920080, scale: 30 })...
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1answer
63 views

Sum fields in ArcGIS

I need to merge fields in rows in the attribute table based on common values of some attributes and calculate the sum of the area associated to them. How can I do that?
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2answers
69 views

Merge only lines that they are touches on QGIS 3.2.3 and create a shapefile output with the result

I have a project with five lines, every element have a different ID. This is view below: I want to merge only lines that there are touching. According with this conditions the lines they should ...
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1answer
141 views

Merge many objects with equal position while sum up their attribute values in QGIS

I´m looking for a smart way to merge multiple line objects with the same geometry and same position in one layer while also sum up their attribute values. The result should be only one geometry (...
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1answer
78 views

Appending multiple FeatureClasses to one another gives ERROR 000735?

I have 5 fairly large Feature Classes with identical fields but different attribute data which I have been trying to merge/append together unsuccessfully. When using merge_management the process ...
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71 views

ogr2ogr merge fgdb (while importing to PostGIS)

I have millions of records and hundreds of tables in several file geodatabases.. The tables name in these FGDBs are all same but just in different areas. For instance, the Admin table, you see below,...
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2answers
43 views

Polygons from different layers

How to create a map with polygons from all the different layers? I'm using ArcGIS Pro and it does not have Overlay analysis tool.
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1answer
42 views

Merging/combining huge point (layer) data using ArcMap?

i have 2 point feature layer (file GDB), each layer have a lot of point feature (records with depth value), around 80.000.000-100.000.000 records/point. there are overlapping area between those layer (...
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1answer
406 views

Merge multiple raster .tif in QGIS 3.2?

I'm trying to merge 12 .tif raster layers (raster -> misc -> build virtual raster), but keep getting this error: Loading resulting layers The following layers were not correctly generated./var/...
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2answers
144 views

Merging attributes in QGIS? [closed]

I have a layer with several polygons making up a division together. They all have attributes with population. Is it possible to add up the population in a merge so I don't have to use a calculator ...
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3answers
141 views

Adding value of overlapping point features?

I have several different point feature classes (shape files) spread on a grid, each point (located at grid centers) has a attribute named value. For example, assume we have a 3x3 grid, which has nine ...
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1answer
185 views

Merge tool QGIS producing black box

I have been using the merge tool in QGIS frequently and it had been working fine until today when the results started producing a black box around the bounding box area for where the raster tiles do ...
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1answer
1k views

Merging multiple LiDAR (.las) files?

I downloaded about 9 LiDAR scenes from USGS and I want to use ArcGIS to merge them so that I can carry out tasks on them together as opposed to one by one.
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1answer
212 views

Connect points from two SpatialPointsDataFrames in R, considering the closest distance

I have two SpatialPointsDataFrames. In SpatialPointsDataFrame one (dat1) I have three points (A, B and C). In SpatialPointsDataFrame two (dat2), I have eight points with temperature measurements. I ...
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84 views

Keeping my changes up to date with OSM

One year ago, we exported data from OpenStreetMap. We added attributes and cut some segments with JOSM. Now, we want to update those files (.osm) to the current state of OpenStreetMap. How can we ...
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147 views

could not find function “merge_eurostat_geodata”

Just a couple of codes with the same error at the time of merge data: FIRST CODE: library(eurostat) library(dplyr) library(ggplot2) library(stringr) fer <- search_eurostat("fertility") ...
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0answers
77 views

QGIS - Parallel Lines - Count length of one

I have a large layer of lines (telecommunication duct) with in parts several parallel lines that are close to each other (cause they lay in the same trench). I would like to count the length of the ...
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2answers
141 views

Combining two shapefiles which contain overlapping and duplicate geometry

Well this could be an interesting one. I've got two shapefiles of polylines (contours). I need them to be one nice and clean shapefile covering the same area. Only issue is, the shapefiles overlap ...
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1answer
150 views

Tried running a script, kept getting “AttributeError: DescribeData: Method spatialReference does not exist”

Anyone know how i can fix this problem below? I am trying to merge all the layers under the same name in different subfolders. import arcpy import os # parameters input_folder = arcpy....
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1answer
43 views

Boundary of merged parcel feature does not disappear after merge

In QGIS, when I merge several parcel features using Merge Selected Features, some of the boundary of parcels still remains. Steps I used: Enabled snapping options. Enabled Toggle Editing. Select Add ...
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1answer
47 views

Merge/Dissolve Polygon overlapping within

I have a polygon that has been broken down to an intersecting analysis point. Each segment has its own acreage within an acre field on the attribute table. I want the intersecting lines to be removed ...
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1answer
154 views

How to merge big and many polygons (SHP) in QGIS/Spatialite?

Background: I have a bunch of (huge) SHP-files that I would like to merge to one big SHP-file that I can use for geo-processing (clip, etc.). Now I was able to merge a big part of the SHP-files to one ...
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1answer
67 views

Reducing a network on QGIS by merging some edges and deleting unneeded nodes

I have a network(nodes=7479, edges=9033) on QGIS that I want to reduce by merging some edges and deleting some nodes that I will not use for my calculation. Below a zoom on a part of my `network. ...
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1answer
187 views

How to merge single band chunked raster tiles with ST_Union in PostGIS

I have written the code below to select specific polygons and determine which grid tiles they intersect via a lookup table. Then depending on the grid tiles I want to merge the associated raster tiles ...
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0answers
32 views

Merging bunch of tracks into fewer?

The following OverpassTurbo query for train routes in Sicily, Italy, returns ten's of tiny tracks: [out:json][timeout:25]; //Sicily: 39152 rel(39152);map_to_area -> .searchArea; ( node["...
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1answer
128 views

Lost pixels during a raster merge with gdalbuildvrt

I'm trying to merge some rasters with gdalbuildvrt in a python script: rasters = glob.glob('/{0}/ndvi_masked/*.tif'.format(path)) gdal_cmd = 'gdalbuildvrt -q -vrtnodata "0" -overwrite {0}.vrt'....
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2answers
189 views

Dissolve Shapefile and sum attribute in R

I have a shapefile with thousands of polygons and a separate csv of additional attribute data. I have joined these by new_shp <- merge(old_shp, add_data, by.x="ID", by.y="ID") However, now I ...
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0answers
174 views

Match attributes (with spatial join) weighted by length of line feature in polygon in ArcGIS

I have line features (streets) and polygons (air quality raster). I need to transfer the air quality attributes into the lines. However, some lines are part of two or more polygons (e.g. the selected ...
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1answer
420 views

How to display a bright and realistic GeoTIFF using GDAL?

I am using GDAL (gdal_merge) to put together some landsat photos using the proper bands. When I open the GeoTIFF that is created using gdal_merge (in Windows), the GeoTIFF is super dark. Now, when I ...
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88 views

How can I merge a DEM mosaic with an overlapping bathymetry raster (while keeping only the portions of each that I want)?

I am tasked with merging a bathymetry raster with a mosaic raster I created from ArcGrid DEM Tiles downloaded from the National Map, for an areal extent spanning the Coastal Lowlands Aquifer System. ...
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1answer
147 views

Spatial Join has Merge Rule Delimiter greyed out

I'm trying to use Spatial Join between a line layer and polygon layer. Where the polygon layer contains Area Names I would like to add to the lines. Sometimes a line will cross more polygons, so I'm ...
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1answer
120 views

Feature merging in QGIS? [closed]

I want to merge these two features into one (N.B: One polygon shapefile, lots of features). But an error occurred. Any possible solution please? QGIS version: 2.14.20
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1answer
238 views

How to merge all layers in QGIS project using 'merge vector layers' within PyQGIS

I am trying to use the 'merge vector layers' tool in PyQGIS to merge all of the layers in my QGIS project into one shapefile, as part of a larger script I am developing. I tried this script, but I get ...
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1answer
148 views

Merging small polygons with biggest adjacent polygon using ArcGIS Desktop?

I have a polygon shapefile classifieds in different regions. In each region there are many small polygons that I'd like to merge to the biggest polygon adjacent to each one of them, as long as these ...
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2answers
74 views

Merging information of two maps using ArcGIS Desktop?

I have a raster file with 68M pixels and a shapefile with 83 polygons covering the same area. I would like to find, for each pixel, which polygon it is located. If there is more than one polygon per ...
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2answers
2k views

Merging 2 shapefiles

I would like to merge 2 shapefiles to create just one: 1 - a shapefile for the 9 GOR English regions with 2 - a shapefile which has the rest of the UK: Scotland, Wales, Northern Ireland and England ...
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1answer
82 views

Merge adjacent polygons into a land use map

I illustrate my problem: in practice I have a land use in vector format that is also made up of polygons irrelevant from a dimensional point of view but that I would like to delete for a question of ...
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1answer
134 views

Understanding Merge Error 001156 from ArcGIS Pro?

I have been having trouble merging point features together in ArcGIS Pro due to the error "001156." I've been looking up solutions but they don't necessarily help me out! I don't know which output ...