Questions tagged [merge]

To combine two or more parts into a larger whole.

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Problem merging/clipping MODIS rasters in QGIS

Im pretty new to QGIS and am having some trouble making a NDVI map for Mali. To cover the whole country I need 5 MODIS NDVI tiles, however every time I try to merge them I get a "the following layers ...
FelixMG's user avatar
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Fill in gaps in QGIS shapes?

So basically, I've written a script that generates a lot of polygons over the UK with certain criteria. The output it a lot of shapes like the following - I wanted to know if, in QGIS, I'm able to ...
Alex's user avatar
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Editing errors in shapefile

qgis version: 3.4.9-Madeira I am editing a shapefile. I want merge two adjacent polygon. Then, I run merge tool, and it comes like below picture. You can see some gap(?) or tail shape line between ...
Jung  TaeJun's user avatar
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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'...
Shihab Nur's user avatar
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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 ...
Adam's user avatar
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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 ...
svein's user avatar
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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 ...
Sheldon Cooper's user avatar
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2k 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 ...
Mittenchops's user avatar
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764 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/...
Ken's user avatar
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530 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 ...
jpg's user avatar
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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. ...
Ilana's user avatar
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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 ...
Lasse Kruse's user avatar
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250 views

Adding shapefile name as attribute? [duplicate]

I have 397 shapefiles that I need to merge into one shapefile, and I need to add an attribute for the name of each of the shapefiles. I have no experience in coding/ Python. Is this possible to do ...
Maitri Shah's user avatar
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303 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 ...
Dwiyan Ananda's user avatar
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666 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 ...
BritishSteel's user avatar
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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 ...
jpdelped's user avatar
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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 ...
grad student's user avatar
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348 views

Merge and count adjacent polygons in QGIS [closed]

I have a shapefile that shows single steps as individuals shapes and im trying to figure out the total count of adjacent steps. The little model I came up for now includes using the v.dissolve ...
SeGa's user avatar
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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 ...
maloo's user avatar
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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 ...
Michael's user avatar
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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 ...
Shub's user avatar
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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: ...
Rachel Shaffer's user avatar
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177 views

Merging overlapping lines? [closed]

I've got one shapefile with bus lines and the sum of their passengers. Unfortunately, some lines are sharing some sections. I want to show exactly how many passengers are on theses sections, so I ...
scott.1060's user avatar
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How to generate an Output [closed]

There are a few similar Questions which mention this issue but sadly not helping me out with my problem. I want to generate an output out of my tool but am not sure which phrase and Datatype to use. ...
GISlena's user avatar
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542 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 ...
ODstuck's user avatar
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118 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 ...
Shivraj Rathore's user avatar
1 vote
0 answers
237 views

Python script causing python.exe crash and wrapped C/C++ object failure [closed]

I am working on automating some of the normal processes that I want to do and I have run into some problems I have not found solutions for after a couple days of searching. I am relatively new to ...
A.A's user avatar
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1 answer
136 views

Merge raster assigning to one the overlapping area QGIS

I want to merge 2 raster files, but assigning the overlapped area to a specific one. How could I do it?
giulio's user avatar
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3 answers
2k views

Merging two rasters with different extents, taking the minimum value

I have two raster data sets: a DTM that covers my desired extent river bathymetry data that has the correct river depth data, but only an extent that covers the river itself, everything else is no ...
ninesided's user avatar
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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 ...
Evrim S's user avatar
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318 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 ...
Flousen's user avatar
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1k 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 ...
user3476078's user avatar
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97 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 ...
Samn's user avatar
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113 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 ...
mattc's user avatar
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1 vote
0 answers
36 views

Moving feature classes between FGDB's creates unknown topology errors [closed]

I am attempting to merge together multiple large feature classes from different FDGB's into a single feature class and am getting unknown topology errors when checking for gap and overlap rules. I ...
Dejon Elmer's user avatar
1 vote
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72 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 ...
manish chate's user avatar
1 vote
0 answers
27 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 ...
user62991's user avatar
1 vote
0 answers
49 views

Making Merge Tool run just once in ModelBuilder? [duplicate]

I have dozens of point shapefiles I want to merge. First I used the Feature Classes Iterator and declared the iteration output as input for the merge tool directly, the problem was that it merged the ...
Abraham L's user avatar
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57 views

Merge without dissolve in ArcGIS for Desktop? [duplicate]

I am trying to merge several polygons in a feature dataset into one. Normally I would use a simple merge but the issue is that merge automatically dissolves. I on the other hand want to have them all ...
dpalm's user avatar
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644 views

Speeding up ArcGIS arcpy.Merge_management for MANY files? [closed]

I'm currently running a script that is using the arcpy.Merge_management function to merge roughly ~1500 shapefiles together. When I tried this with much smaller test runs, it ran perfectly. Now ...
Oly's user avatar
  • 51
1 vote
0 answers
73 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 ...
Enzo Baldini's user avatar
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1 vote
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560 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 ...
jfe.guerreiro's user avatar
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111 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 ...
dsa's user avatar
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1 vote
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281 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.
Egidi's user avatar
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1 vote
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289 views

Merging polygons of single feature using QGIS? [closed]

I am new to QGIS and have done some research on this topic before posting but not sure I found an answer. I have one feature that has multiple polygons (islands of a nation). In reality, there is ...
rr88's user avatar
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1 vote
0 answers
288 views

Trouble merging 2 rasters using qgis

I am trying to merge two rasters using the "merge" tool on Qgis 2.6. Qgis does complete the process, but the resulting image only shows one of the two rasters with the rest of the extent with really ...
Nadia's user avatar
  • 441
1 vote
0 answers
35 views

How to merge elevation from a raster image onto a shape road network with QGIS? [duplicate]

I have a shape file with Stockholms road network and a raster image with elevation data from the same area. Is there any way to merge the two somehow, either by adding the slope direction as ...
johlund's user avatar
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1 vote
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667 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 ...
wally gorgeous's user avatar
1 vote
0 answers
65 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 ...
user34581's user avatar
  • 158
1 vote
0 answers
23 views

QGIS merge selected features tool malfunctions due to geometrical errors [duplicate]

The issue occurs using the 'Merge Selected Features' tool when there are geometrical errors in the features (not all are picked up by the 'check geometrical validity' tool). In 2.2 Valmeria, the ...
SteveLowman's user avatar

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