Questions tagged [merge]

To combine two or more parts into a larger whole.

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Merging satellite images error

I am trying to merge 3 satellite images of 3 times. The images are median images. I have used the following code but there is an error. var maskL8 = function(image_m) { var qa = image_m.select('BQA'...
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31 views

Tabulating points from CSV that are within 1 km of points from another CSV using QGIS?

I have two sets of data. One that is from a csv and contains a relatively small amount of data (we will call location data), and another csv that contains a larger dataset that contains environmental ...
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139 views

Merge connected lines and split them after set unequal distances

I need to edit line features in QGIS 3.4.4. I have more than 1000 line features that I want to first merge and then split. The line features describe roads in useless intervals, my goal is to ...
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212 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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153 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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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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182 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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91 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
518 views

How to set the “LAYERS” parameter of the QGIS 3 algorithm “native:mergevectorlayers”

I do not understand how to set the LAYERS parameter for the QGIS 3 native: mergevectorlayers algorithm (for standalone python code). Merge vector layers (native:mergevectorlayers) ... ----------------...
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352 views

Error Code -2147483647 when combining vector layers

I am trying to combine multiple vector layers in QGIS using the "merge vector layers" function from the dropdown lists (vector -> Data Management Tools -> Merge Vector Layers) All data are ...
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1answer
288 views

Merging multiple non overlapping raster layers into one layer

I'm working in Qgis 2.14 and have received multiple raster files for the Height of a terrain that combined covers the entire terrain I’m interested in. I would like to combine them. Because the ...
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83 views

Join or interpolate broken lines

I have these lines (blues lines) that extract from a raster and need to unite them automatically (red lines). Currently I'm doing it manually using a plugin (Join multiple lines) but it's very tiring. ...
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283 views

Merging Selected Features in QGIS?

i tried to merge several polygon into one using "merge selected features" but it's look not perfect because there are some lines left as residual. can anyone help me to solve my problem. i am using ...
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335 views

Merging non-contiguous polygons in OpenLayers 3 / Turf.js

I need to merge polygons that are in close vicinity to each other. Consider the following screenshot: I want the user to select both polygons and then merge them when clicking on a button, so ...
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62 views

Polygons merge/union using two colums values

I'm using HydroSHEDS watersheds shapefiles for a proyect. Watershed are delinated applying the rules of Pfafstetter codification. I need to merge/union the different polygons in a same shapefile. I ...
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65 views

QGIS 2.18.9 on mac raster merge is interminable

User details first: OSX 10.11.6 using QGIS 2.18.9 with kyngchaos GDAL 2.1.3 and all other standard frameworks, dependencies, and plugins (e.g., MrSID). I want to merge five high-res .jp2 files using ...
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113 views

How to convert multiple Geospatial PDFs to map tiles

What is the best way to convert Geo-referenced PDF files (like the Canadian BC http://pub.data.gov.bc.ca/datasets/177864/pdf/ or USGS maps) to a collection of tiled XYZ web maps. I would like to ...
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Characteristics of layer only for overlapping area of another layer

I have got two layers, one with the land cover of Zimbabwe and another with the administrative divisions. I need to isolate a district and identify its land cover. I managed to cut out the district I ...
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117 views

Merge Symmetrical Difference and Intersection Line

I tried to merge these two types of lines I have from using the geometric tools "Intersection & Symmetrical difference". They end up being part of the same line and I want to join them together ...
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149 views

Merging shapefiles with the same name and shape type

I have several shapefiles I need to merge. I have been successful in merging all of them except for one using the code bellow. For the one that is not working, I get an error message that reads: ...
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289 views

Using “Merge” with in_memory workspace with Arcpy in ArcMap 10.4

I am attempting to merge three tables, all within the in_memory workspace. The merge appears to work fine, but when I try to call the merged table, it cannot be found. I have isolated the issues to ...
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272 views

How do I remove the boundaries between municipalities of my shapefile?

I have a shapefile of a province right now. It includes the barangay/village boundaries and municipal boundaries. However, I only need the municipal boundaries. How will I remove the barangay/village ...
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407 views

Desktop ArcGIS Training Sample Manager cannot merge training samples

I have done the following procedure which has resulted in a troubling behavior: I have a Shapefile Feature Class with multiple different areas under specific distinct description field. I need to ...
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64 views

Create new shapes by merging an existing shape

I want to create a new shapefile from an existing one. I would like to create a new shapefile for next level of geo hierarchy (say regions) by grouping some of features (states) from the existing ...
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34 views

How to create one shapefile between 2000-2010

I have different deforestation shapefiles for Amazon region for each year 2000, 2001, 2002, 2003 etc. until 2010. I want to create a new shapefile that will show the data just between 2000-2010 in ...
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263 views

spatial join field mapping Arcpy, change merge rule

I have a line feature class which represents a stream network. At a confluence of two river segments, I'm joining the stream segments to the point of intersection via spatial join (one to one join). I ...
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784 views

ArcGIS Modelbuilder: Merge features from same layer into one feature

How can I merge two features from the same layer into one feature when using the Model Builder? Outside of the model builder, this can easily be done with the Edit Tool. How can I make the same ...
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1answer
78 views

How to append OS MasterMap Feature Class to the Feature class in PostgreSQL database

I have my Enterprise Geodatabase as PostgreSQL. I want to keep OS MasterMap data on the Geodatabase and would like to update it whenever a new tile is downloaded. However, I am struggling to find a ...
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331 views

Align Geotiff images in Qgis

I generated 3 drone maps of one area. The individual images were stitched using dronedeploy. Each map has some overlap with others. I imported all 3 geotiffs as rasters in Qgis and overlay them. ...
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92 views

how to separate land-use type from rows to columns from one shapefile

i am new to using ArcGIS. i have one shapefile of land-use data (100 rows) that has different land-use areas for each neighborhood (which are 10 neighborhoods), what i want is to have one row for ...
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109 views

Merging multiple fields with same parcel id yet different attribute values, while keeping all fields?

I am using ArcGIS 10.3 for Desktop. I have a property parcel layer that when Intersected, each parcel is broken up into hectares of different land covers. My question is can this be merged (or ...
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62 views

How to create a single feature/segment from connected line segments

I want these 3 connected line segments to be a single feature/segment. I used dissolve and unsplit tools but I am not getting desired output. I dont want it done manually with merge tool, because ...
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25 views

Trying to make one file out of many Hillshade files

I am trying to make a hilshade file for all of Colorado but when I download the DEM data for the state there are over 25 files. I have converted them all to hillsahde, but now I want to work with just ...
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70 views

Error in merging two raster files (precipitation) in QGIS

The newly computed geotiff shows the extent of both raster layers, but only the data of one. If I use identify features tool it gives me only the values of the visible part not of the other part. I ...
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396 views

Using gdal_merge to merge a large amount of files (in pairs)

I'm new to python and how it can be applied to gis. I have a large amount of MODIS files to go through and I've already extracted, reprojected and converted to GTiff the bands that I need from each ...
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102 views

Nested iterators - batch merge from multiple outputs

I'd like to ask you some advice for nesting an iterator (from a submodel) into a master model which also include an iterator (see pic attached). The whole purpose is to 'Merge' the iteration output of ...
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175 views

QGIS how to merge a linestring layer and a point layer into a multigeometry layer

I have two layers: Layer1 is point type. Layer2 is linestring type. I need to obtain one unique layer merging both layers. Of course, it will need to be multigeometry type.
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429 views

Merging contour lines generated by gridded data

I have a set of gridded data, which I have used to generate contour lines based on separate values in the data. In the example provided the contour lines shown correlation coefficients. The contours ...
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61 views

Changing order layers are displayed in using MMQGIS?

I am dealing with hundreds of different layers, all of which have one of 6 names - not by choice, that's just the way they show up when I import them. I am trying to merge all those with the same ...
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309 views

Merging shapefiles to one, rearrange columns?

I am trying to merge two shapefiles which both contain polygons representing properties in QGIS 2.2. One problem is that the names of some of the columns in the attribute table differ between the two ...
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18 views

Merge raster without add nodata value

I was trying to merge 2 DEM raster. Is there any way to not add nodata to the merged raster? thanks.
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27 views

QGIS Error with Merging rasters

I'm using QGIS 3.8 with grass . I have 3 rasters that are located far from each other and I would like to merge them into one raster layer. I managed to merge 2 of them but the third one makes ...
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19 views

Merge and CLASSIFY ImageCollections with different pixel size

I am trying to perform a classification on a merged imageCollection that includes median annual images for both the Landsat 8 and Sentinel-2 satellites. To merge the two datasets, I resampled all ...
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19 views

NetCDF files in QGIS mean of 60 months, the program isn't recognizing subset files

I am trying to merge the files inside an NetCDF file in QGIS,all with same Longitude and latitude size and resolution, but this error is showing; Versión de QGIS: 3.8.3-Zanzibar Revisión del código ...
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31 views

Updating shapefiles in QGIS

I've got a parcels layer from the state and i modified it by adding fields relating to my business as in project number and a reference plan field. The state updated their shapefile by adding new ...
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35 views

Unexpected error merging three point shapefiles

I get the following error when I try to merge the files: The error says that there is an unexpected error. I have deleted the lock files and an empty ArcMap document. It still gives me this error.
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32 views

Using MERGE command in QGIS?

I am working on QGIS 3.4.9 with Mac OS Mojave 10.14.5 I have two DEM raster files and I would like to merge them. Unfortunately, an error occurs and I don't know what to do.
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41 views

Merging annotations in ArcMap?

How do I merge two annotations into a single part?
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27 views

QGIS 3.4 bug merging layers

I have some difficulties with the tool Merge vector layers (free translation from French). The result of the process is an empty layer of the line layers. It is strange, because I did it with two ...
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49 views

Merging Degree Two nodes in Stream Network using QGIS 3.4

I have a stream network and I want to convert it in graph like data structure, for which I need to have precise set of FROM and TO vertices.The geometry of stream network is not correct i.e. the ...