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Questions tagged [merge]

To combine two or more parts into a larger whole.

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14 views

Python: No module named 'gdal_merge'

I try to merge two DEM data sets with python, using gdal_merge, but it doesn't work. I install like this: from osgeo import gdal But this doesn't work: import gdal_merge as gm I get the error ...
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1answer
43 views

Merging TIFF files using QGIS?

I have around 1200 tiff files (example below), and corresponding .tfw files and .aux files with sonar data that I'd need to merge into one file and I'm struggling to do so. I browsed some topics ...
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1answer
43 views

Why can't I buffer polygons in ArcGIS Pro?

I've created a polygon by merging several polygons from the same layer using the merge option under Edit menu. Now I cannot buffer the resulting polygon. I tried repair geometry it didn't help. I'm ...
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0answers
23 views

Merge gives an empty output

Within ModelBuilder I've got an orginal file, out of this file a few locations are extracted by mask and the data has been changed afterward. Now I am trying to put this data back by first erasing the ...
5
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1answer
132 views

Is there a “Merge Parts” tool in QGIS?

In the advanced digitizing toolbar, QGIS has these 3 tools: Split Features, Split Parts, and Merge Features. Is there a tool or equivalent algorithm for the logical fourth one: "Merge Parts"? This ...
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1answer
104 views

Merging lines (with and with no overlaps) in QGIS

I have two layers ("Layer_1" and "Layer_2") of lines where they sometimes overlap and follow each other for a bit and then takes another route (see the image below). "Layer_1": Red line "Layer_2": ...
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0answers
21 views

Merge two shapefiles into one new shapefile with OGR/GDAL library in C#?

I am currently coding a C#/WPF application that lets you choose two shapefiles and create a new merged one, with the content of both shapefiles. My problem is that I am quite new (1 month with gis) ...
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3answers
68 views

Merging layers into one- QGIS

I have numerous population layers for the Baltic Sea. In the attribute table of each layer, I have population densities, name of towns etc, all the same geometry (points). I'd like to merge the layers ...
6
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1answer
433 views

Merging overlapping buildings but not adjacent buildings using ArcMap?

I have a dataset that has buildings generated from satellites which leads to imperfect building outlines. The buildings circled in red are one building but the computer drew them as having multiple ...
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1answer
21 views

Merging layers with preferences or ranks using ArcGIS Desktop?

I want to make a "Mosaic" or a "Compilation" of 20 shp. layers which some of them are overlap. The layers has a field named "Year" and I want the newest be on top and delete the overlap older shps ...
2
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1answer
48 views

Getting maximum values of attribute of multiple Shapefiles merged into new shapefile in QGIS?

I have thousands of points in multiple shapefiles. I want to get the maximum value of an attribute of each shapefile. Then I want to merge all the maximum values to a new layer. Is there a way to ...
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2answers
175 views

Getting black square after merging two rasters in QGIS

After merging two SRTM TIFF files all I get is a black rectangle. Merged raster has zeros next to both black and white squares under layer name. I have no clue what I am doing wrong. Any suggestions?...
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2answers
33 views

GRASS r.viewshed from Python with multiple raster tiles

I'm new to GRASS and struggling to do a viewshed across multiple tiles. I have got the GRASS r.viewshed function working from Python as follows for a single tile: gis_path = os.path.join(output_dir, '...
2
votes
1answer
19 views

Merging multiple rasters applying priority rules using ArcGIS Desktop?

I have three raster layers covering the same geographic area. I would like to merge them into a single raster layer. The layers have different levels of importance, so I would like the merge to move ...
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0answers
23 views

Project tool swallows data [closed]

I want to project my data into another coordinate system. I tried using the Project tool but when I opened the attribute table after ArcGIS said it had finished it was empty. I also tried using ...
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2answers
52 views

Merge thousands of rasters with gdal_merge.py

I have several thousands of small rasters, kb size, tens or hundreds of pixels most of them. Batch command of gdal_merge.py can't take all the files at once, so I am doing partial merges of chunks of ...
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1answer
47 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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1answer
19 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
37 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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1answer
28 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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0answers
24 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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0answers
24 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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0answers
32 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
32 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
24 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 ...
2
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1answer
35 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 ...
3
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3answers
64 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
58 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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0answers
30 views

Getting mosaic with NIR TIFF files?

I'm new in GDAL library for Python. What I'm trying to do is to merge or get a mosaic with a lot of NIR pictures captured by a Parrot multispectral camera. The pictures I get from this camera comes in ...
0
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1answer
53 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
34 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
24 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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0answers
32 views

ArcGIS merge SHPs and delete identical (no common attribute other than spatial overlap)

I have merged two SHP files that together have over 9000 polylines; no common table attributes. Roughly half of the two datasets are exact duplicates (mixed throughout the table and the map space). ...
0
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1answer
34 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 (...
0
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1answer
27 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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0answers
38 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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0answers
18 views

Bringing together data points with same value?

As shown in the picture, I would like to bring together data points with same values, sort of creating a pie chart. The location where it merges doesn't matter as long as it is inside a specific grid. ...
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2answers
38 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
34 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
67 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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0answers
20 views

Using merge rules in field mapping of ArcGIS Merge tool? [duplicate]

I am working with ArcGIS and have below simple two point features that I want to merge to get the right side feature class. I give merge tool the first two feature sets, and in field mapping section, ...
2
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2answers
52 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 ...
0
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3answers
61 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
67 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
161 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
48 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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0answers
60 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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0answers
40 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
51 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
67 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 ...