To combine two or more parts into a larger whole.

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1answer
36 views

Iterators in model builder - merging nested files with same filename ending

I am trying to merge files that are nested in different folders by their file names. For example folder 1 contains up to 100 subfolders that each contain a set of shapefiles: subfolder1_A.shp, ...
4
votes
1answer
169 views

Merge tif files with python

I'm also having problems with running gdal_merge.py within another python script and I cannot run it. I already checked a similar problem here. My example is as follows: First I set my workspace and ...
2
votes
1answer
46 views

LiDAR data download, merge and mosaic (Minnesota state)

I have been using the toolbox found here to download LiDAR data for MN (Minnesota-US). The tool is very convenient for downloading multiple tiles but the merge/mosaic function of the tool is ...
1
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0answers
32 views

Merge vector layers problem with german names (ä, ü, ö…)

When I'm trying to merge (saga merge layers tool) some shape files I get an error log 'ascii' codec can't decode byte 0xfc in position 91: ordinal not in range(128) See log for more details ...
0
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1answer
35 views

Function to merge geojson and csv data in R

I have been using merge() to merge my geojson file with csv data in R. My codes are as follows: map@data <- merge(map@data, csvdata, by.x="ID", by.y="ID") However, after exporting the geojson ...
0
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0answers
25 views

How to merge two rasters when are on the same place

I have two rasters in GRASS GIS. first : raster of DMR, raster picture of relief - created from high values second : raster of buildings where pixels of every building have value of high of this ...
11
votes
2answers
15k views

How can I join several raster files using QGIS?

I'm new to QGIS. How can I combine multiple raster layers into one layer? The raster images are of different areas with very little overlap. The goal is to bring numerous town plats into one project. ...
0
votes
1answer
20 views

How does GIS detect the error causing field in “ExecuteError: ERROR 001156”

I always get all types of errors, and would like to know if i can use the information in these error messages generated by arcpy to fix the issue and repeat the step where it occurred. for example in ...
0
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1answer
43 views

Batch merging field mapping

I made the following script to merge shape files of different format types (poly,line, points): def main(): import arcpy from arcpy import env import globalpath import os ...
0
votes
1answer
425 views

Merging Multiple Paths

Alright, I'm going to start by using Google Earth terminology because that's where the original need for a solution came up. I have multiple paths (54) that I want to merge into a single path. ...
5
votes
2answers
488 views

Extract certain area of contours/satellite images

I have 2 satellite images (jpeg2000 format) and 2 xyz-files from the same area. I am trying to extract certain region from the area including contour lines and the satellite image in order to import ...
1
vote
1answer
1k views

Merge multiple feature datasets while maintaining shapefiles for respective point, line, and polygon files nested ArcGIS

I've been doing some digging and a few days of playing around with my data in ArcInfo but I haven't been able to find a solution to merging datasets, which consist of many different point, line, and ...
1
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1answer
27 views

Adding multiple model outputs to merge tool in ModelBuilder?

I am using ModelBuilder to batch project multiple (site) specific geodatabases' contents then "Merge" like components into a single geodatabase. I have up to eight FCs for each site (e.g. parcels, ...
1
vote
1answer
29 views

Stratified Random Sampling with large dataset in ArcGIS?

I want to create a Stratified Random Sample with a land cover classification map. The purpose for the Stratrified Random Sample is to produce an Accuracy Assessment. I am using ArcGIS 10.2 with access ...
0
votes
0answers
32 views

Merging linestrings in QGIS using PostgreSQL and PostGIS

I've to merge all linestrings from a PostgreSQL table "river" where not more than two start/-endpoints are overlapping. In the illustration below I use a "M" to mark all linestrings that needs to be ...
2
votes
0answers
203 views

Failing to merge rasters in QGIS

I am new to QGIS but have some familiarity with other GIS software (namely ArcGIS). I want to merge a number of LiDAR digital elevation model (DEM) tiles (specifically, 30 individual tiles) to ...
1
vote
1answer
26 views

Merge 2 Pointlayers with same coordinates but different attributes in QGIS?

I have two layers with points who have exactly the same coordinates but different attribute fields. I would like to merge the tow layers so that I only have one point at each location who has the ...
1
vote
2answers
60 views

How to combine/merge *.lul files to shape format?

I got multiple files, say 2500, I never heard about lul files before. anyway I visualised it in QGIS after number of attempt in Autocad map 3d and ArcGIS. it is basically like Basemap:Road,parcels, ...
1
vote
1answer
257 views

merge rasters with nodata cells

I want to create single attribute table base on multiple overlapping raster. Some raster do not overlap completely but have common areas. In that situation I need the value from other raster while ...
1
vote
1answer
27 views

Merge lines where point feature class exists

I have a polyline feature class and a point feature class. Two lines from the polyline feature class come together (in most cases they are snapped together) where a point exists in the point feature ...
2
votes
1answer
38 views

Create random points in ArcGIS on a polyline in a polygon

I am trying to create 100 random points, 1 within 500m of 100 points I already have. I have created a buffer and can easily create 1 random point in each, but now I want those points to lie on a ...
4
votes
3answers
9k views

How to Merge/Dissolve Polygons By Common Attribute Field in QGIS?

I have joined corresponding Local Enterprise Partnerships table data into a polygon shape file containing UK Local Authorities. How do I Dissolve or Merge the the Local Authorities polygons by ...
-1
votes
0answers
9 views

Merge branch not working in ModelBuilder?

I created a submodel with an iterative process, but I would like to merge the obtained output in a single feature class. It worked well until I included an additional step in the submodel (add new ...
1
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0answers
22 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 ...
1
vote
1answer
30 views

Merge or dissolve line features based on two or more attributes

I am working in Arcmap 10.2 and I would like to do the following according to the example table below, but I do not have a clue on how to do this. I am working in ModelBuilder. Is there a tool for ...
0
votes
1answer
64 views

Merge touching polygons with keeping their attributes

I've got a layer of polygons Although they all in the same layer, each polygon own some unique data like the date of this polygon and an amount it possess (a number). I want to join/merge all the ...
2
votes
1answer
57 views

How to merge/combine several tables in geodatabase into one table using ModelBuilder?

I have over 50 csv files that have the same data structure and I need to merge them into one table. As I need to build a model I have successfully imported all the files into a File Geodatabase. ...
1
vote
1answer
30 views

Does CartoDB support the SQL MERGE command?

I am developing a mechanism that uploads records to cartodb - first by importing the records to a new table, and then insert the records from the new table to an existing table. The problem is that ...
1
vote
1answer
51 views

Strategies for managing (and ultimately merging) duplicate business locations in a spatial database

I am working on a project right now that involves using multiple (very large) "location directories" to identify with the highest possible inclusiveness, a diverse set of business locations. These ...
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votes
1answer
33 views

Merging bulk data in 10.2 ArcGIS

I have to merge 50 datasets. All datasets have same feature classes. please suggest me fastest way. append, merge, load, all methods will take time. please suggest me fastest way.
2
votes
1answer
51 views

Calculating Distances Between Geometry Columns of Differing SRIDs

I am attempting a relatively simple task but have been running into trouble. I have two tables, one which has lat and lon points which were geocoded using google (SRID 3857) and another table which ...
0
votes
0answers
12 views

merge rasters using mosaic to new raster - wrong output

I am attempting to merge two raster datasets into one output dataset. I am using the Mosaic to New Raster tool. Unfortunately, the output does not display the same categories as the original input ...
1
vote
1answer
158 views

ArcGIS10.2 Data Merge error: 000732

I am running python in the ArcGIS python window. ArcGIS shows error message when trying data merge from arcpy. File "", line 1, in File "c:\program files ...
2
votes
1answer
56 views

Merging ShapeFiles with QGIS for UK counties

I want to draw a map for all the counties of UK including North Ireland. Since I can not find a source of counties including both North Ireland and Britain. I try to merge two shapefiles with QGISfrom ...
0
votes
2answers
22 views

Combine Community Layer with County Layer in ArcMap?

I have a County shapefile that I am trying to combine with an updated community or jurisdiction shapefile. I have tried Unioin, Merge, and Spatial Join, but am not getting the desired results. The end ...
1
vote
0answers
43 views

Merge multiple geojson-polygons

Lets say I have a very big image With a polygon in it: I want to polygonize this very big image with gdal polygonize. But the image is too big, so I dont have enough memory to polygonize that ...
0
votes
0answers
29 views

Join GeoJson with additional info files

I have a GeoJson-file [1] with multiple polygons exported from OpenStreetMap that will be updated regularly and I want to add additional information (to the properties) from another file [2] (JSON ? ...
2
votes
1answer
120 views

Overlaying lines and aggregating their values for overlapping segments

I have a number of routes (5 in this example data) stored in a SpatialLinesDataFrame called r. These have different origins but all converge on the same destination (Manchester Airport): Each ...
1
vote
2answers
40 views

Merging raster data in QGIS using wildcards

I have a problem merging raster data sets in QGIS, and I have searched various forums, but have not found a solution yet. An "ordinary" merge, for example merging the raster files ...
2
votes
1answer
42 views

ST_LineMerge doesn't return LineString

I want to create a LINESTRING from a MULTILINESTRING. However in the following case ST_MultiLineString is returned: Select ST_GeometryType(ST_LineMerge(ST_AsText(' MULTILINESTRING( (-70.52570888 ...
1
vote
1answer
34 views

FME - How to merge geometries that they are in a distance of x meters?

I have a CAD file which I import in FME. I have two different geometries. A polygon and a point geometry. Each point geometry has some attributes which I want to pass to the polygon geometry. Both the ...
3
votes
1answer
355 views

How do I merge DEM rasters correctly?

I've been struggling with this problem for awhile. Here is a curvature raster to illustrate the problem. I'm using 10m DEM rasters from the NRCS Data Gateway for a large portion of California. The ...
5
votes
2answers
372 views

Correctly merging DEM rasters and eliminating edge effects

I'm using 10m DEM rasters from the NRCS Data Gateway for a large portion of California. The problem is some strange tiling that appears after merging, but isn't present in the original data (before ...
0
votes
0answers
30 views

How to merge grd files programmatically, ideally in Python?

We currently get LIDAR data from the field in grd format. Sometimes this data is overlapping. This data gets fed into a python program that does some analysis. What I'm after is some way of ...
2
votes
0answers
46 views

Create polygons from many small. Expand to include space between

I'm just a programmer without GIS-skills as such. Hence this question: Intro: I have a lot of polygons; actually each private-owned real estate in my country. I also have "counties" as polygons. ...
0
votes
2answers
56 views

python conditional statement to allow either two inputs or only one input going into a merge

I have a model builder process that I am converting to python for additional editing. In the process I have both a point and line features(input variables) being buffered and then the resulting ...
1
vote
0answers
29 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.
6
votes
3answers
1k views

Which is more efficient process in ModelBuilder - Merge/Dissolve or Union/Dissolve?

I'm creating a model which combines four very large files and dissolves them. At the moment, my workflow uses the Merge tool and then the Dissolve tool. However, I was wondering if using the Union ...
0
votes
1answer
94 views

Merging polygon and line shapefiles into one using QGIS?

I have two shapefiles: One is a line feature of the rivers and waterways of London, the other is a polygon feature of the reservoirs, lakes and ponds of the same area. Is it possible please to merge ...
-1
votes
1answer
77 views

Unable to merge two shapefiles (created from text files) using ArcPy? [closed]

I am trying to merge 2 shapefiles together created from 2 text files. I am new to python and managed to get the textfiles into shapefiles, however, when trying to merge the two newly created ...