To combine data from different files

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3answers
91 views

How to merge overlapped shapefiles without one layer's overlapping area?

I created a forest type map from 50 scene satellite images as shapefile under the following conditions. Some shapefiles are overlapped, because scene overlaps each other. There is an order of ...
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1answer
85 views

How to create a grid after merging shapefiles?

Follow up question to QGIS Model Builder Script - Possible to merge layers in a folder? I think I'm missing something very obvious here but can't seem to find it. After merging shapfiles in a folder, ...
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0answers
59 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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0answers
30 views

Things to consider while and after merging DEM-Tiles?

In some tutorials it is said that after merging you should stretch the “histogram to full dataset” (also mentioned in the QGIS Training Manual). Is there anything else you would suggest doing after ...
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0answers
14 views

Do I get the same result when merging and clipping DEM geotiff files using different steps?

I merged and clipped 12 GeoTif Files with GMTED2010 Data (15 Arcsec) obtained from Earthexplorer to get a large map covering Europa and the Near and Middle East. First I tried Variant A) Raster – ...
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0answers
71 views

Why does merge/mosaic four DEMs into one give ERROR 01042?

I'm unable to merge 4 dems into one using ArcGIS Home 10.2. Raster Calculator, adding them, gives me the error: RuntimeError: ERROR 010422: Error in processing the environment mask. I created a ...
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2answers
55 views

How to set Merge output as Select Input in ModelBuilder?

I'm using ModelBuilder. I tried to take the Output from the Merge tool as Input to the Select tool. But it doesn't work. I'm trying to Merge 90 Shapefile lines into one. Then "Select" some features ...
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1answer
314 views

How to merge output shapefiles in model builder

I have a layer with several polygons and a road map. I need to take each polygon and use it to clip the road map, dissolve all of the road records into one, and then merge the polygons into one ...
2
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1answer
234 views

How to merge hundreds of vector layers and sum attributes in QGIS?

I'm still at a fairly beginner level with QGIS and I've been banging my head against the wall trying to figure this out, so I would like to turn here for the internetz help. I am trying to construct ...
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2answers
119 views

Merge Error: Not Enough Memory

I'm attempting to make a flood plain map for a school project, and am using FEMA Flood Hazard Symbology for the legend. I've dissolved by a Flood Zone Field, but am left with two attributes both named ...
1
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1answer
92 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 ...
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3answers
300 views

Merge images first, or georeference first?

I'm wanting to georeference and vectorise some features from scans of the OS 1896 Town Plans that I have purchased from the NLS (http://maps.nls.uk/os/london-1890s/info.html). The scans provided are ...
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1answer
47 views

How to merge 2 shapefiles in ArcObjects

Using ArcObjects SDK for Java, I have the full path of 2 shapefiles: String in1, String in2, and I want to merge them using the geoprocessing tool Merge. I tried to several methods: ...
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0answers
62 views

How do I set the xydomain extent and merge point feature classes in a geodatabase

I am trying to select point feature classes in a feature dataset and merge them while setting the XYDomain using Python. If I do the merge manually and change the environment settings to use a ...
1
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1answer
37 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 ...
2
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3answers
203 views

Merge 30000 polygon shapefiiles in a logical manner in ArcGIS model Builder

I have 30000 shapefiles (a1.shp to a30000.shp). They are all polygons. Each polygons has one and only one polygon feature in it. I need to Merge the polygons into 1000 shapefiles. My output would be ...
2
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1answer
74 views

Averaging XY points locations if in close proximity automatically over a large dataset in R

I have a point dataset (XYZ values) containing a few million points covering a 5km x 5km extent representing maxima locations. However there a great deal of these points which exist in 0.5m of others. ...
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1answer
76 views

ST_Union to merge tables containing lines?

I have to build a street network with Postgis that will be used with pgrouting. I have two tables: 1) the_network (182 lines): is a MULTILINESTRING table. Having columns road_name (varchar) / ...
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0answers
45 views

Merging parcels but keeping Geometry seperate

I am working on updating a parcel layer we received for a project, and I have duplicate parcelID's for parcels and I have been merging these to create 1 parcel as to not have duplicate ID's. My ...
4
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1answer
499 views

How to merge shape files with attributes from a python script in QGIS?

I have some shape files. They are all the same kind of shape and all have the same attributes. If I wanted to merge them manually the "Vector/Data management tools/merge shape files to one" works ...
3
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2answers
156 views

Merging DEMs of different grid size

I'm trying to merge two grids with different cell size. One has a cell size of 10m and the other 50m. The 10m one covers a subarea of the 50m one. I know that the most accurate one is the 10m one and ...
0
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3answers
72 views

How create geographic column in postgis table?

I merged several point shape files in postgis, but when I load the new merged shape in QGIS it is not possible to see points in the main window. To create the merged table I used this piece of code ...
2
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1answer
126 views

QGIS 2.2 Raster Merge losing color data

I'm trying to merge a couple of GeoTiff maps using Raster > Miscellaneous > Merge but the merge is only coming out in grayscale. The geotifs are using palettes color. How do I get the merge to keep ...
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1answer
85 views

Merging more than two shapefiles in QGIS

I want to merge 9 shapefiles (all polygons) into one file. The problem is, when I try to merge more than two files at once, I seem to loose attributes on the way? Is there any other way of merging ...
1
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1answer
101 views

how to use union tool for merging more than two layers?

I want to combine different layers into one but I still want to identify different layers in the new combined layer. Union is best for this, but it doesn't allow me to combine more than two layers. I ...
2
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4answers
412 views

How to merge many shape with the same name in different folders?

I've many (hundreds) shape (3D points and 3D polygons) that have the same name, saved in different folders; and I've tried to merge them using batch with Merge tool in ArcGIS... but inexplicably ...
1
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1answer
272 views

Merge multiple geometry type TAB files in QGIS/OGR

I have a number of vector layers with all types of geometry (point, line/multiline, poly) and I want to combine them into a single layer in QGIS. I know MapInfo can do it but with the other 99% of my ...
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1answer
48 views

edit aggregate polygons

i have one file, with 32000 record ,its polygons for city ,when i want to merge some polygons for get one rooftop polygon from many polygons ,this new polygon remove or it's have unwanted lines ...
1
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1answer
77 views

CAD to GDB import using ValueTable function

I have several CAD files (DWG) that I want converted to Feature Classes within a file GDB. Each feature class will be based on a polyline attribute "LAYER" value, so I have a query filter applied ...
0
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0answers
36 views

Table merging: multiple corresponding objects

I'm working with a shapefile which has all the municipalities of France as areas, identificated with their unique code (INSEE code). I want to join a table, where every historical monument is ...
0
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1answer
198 views

Is there anyway to stack or merge .hdf files in R Studio?

I would like to be able to merge, mosaic, or stack several .hdf files. Does anyone know the package or library i should be looking for the tool to do this?
0
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2answers
202 views

Batch merge large numbers of.asc grid files

I have >2.5k .asc grid files which I need to merge into a single overarching dataset. I would like to avoid having to convert them into esri grids first so was looking to use QGIS (v.2.0). I am ...
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0answers
51 views

Merging styles in ArcGIS, changing default Style location?

Just upgraded to 10.2.1 and I have 'lost' all my personal styles. I have a couple questions. Is there a way to merge my three different style files into one? Is there a way to change the default ...
0
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1answer
183 views

Adding additional columns of data to CartoDB table? (in-place / no merge)

Is there any quick way to add some data to a table without either a) merging / replacing the whole thing or b) having to do it one cell at a time ? example: i have a table loaded now with the ...
1
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1answer
82 views

gdal_merge Sum/Agregation files into single output band

I need to create a single tiff files from several others (each have the same extent and resolution) and the output file need to have a single band containing the aggregated/sum of the values in the ...
0
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1answer
57 views

how to correct merge rasters with different projections? [closed]

how to merge rasters with different projections with correct transforn? For example EPSG:32636 and EPSG:32637 if i do it with gdal_retile command, i have correct view for EPSG:32637 rasters and ...
2
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2answers
531 views

How to merge dbf files in Python or arcpy?

I have over one hundred dbf files to merge. Each of files have two columns: ID and another field which differs from one file to another. I want to merge those fields based on ID such that each raw ...
0
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1answer
54 views

Make hangs when attempting to build zip code TopJSON file on Mac OS X

Thanks so much to all involved with the us-atlas project. I am learning how to use d3, leaflet and other tools to make maps and this is really helpful. I have grabbed files from the us-atlas project ...
0
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1answer
143 views

Merging multiple polygon shapefiles

I want to merge two polygon shapefiles in one without losing the attributes using ArcMap 10.1. To be exact I am creating a geological map and have some geologic formations in one shapefile and some ...
1
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2answers
279 views

unionize intersections of merged polygons

[Updated quesion] I am using the following code to merged polygons from shapefiles for the purpose of calculating the surface area; library(maptools) library(rgdal) library(rgeos) #enter slots, ...
1
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2answers
388 views

How can I create a merged buffer in QGIS then count points that fall within it

I have a QGIS plan which shows ponds (as points in a shape file with an OS tile as a background) within a survey area. I need to calculate the total number of ponds within 1 km of each of the on-site ...
2
votes
3answers
201 views

Can ArcGIS only merge two shapefiles each time?

I need to merge multiple point shapefiles (in the same directory) into one point shapefile. After inputting these shapefiles and merging it, I found the final output only contained the data from two ...
2
votes
4answers
269 views

Merge large number of polygons using QGIS

I have a series of polygons that are the output of another GIS program - I need to merge the polygons into a single polygon. I have tried a couple of different methods with no luck. I have tried to ...
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2answers
188 views

Build a model sequence or merge models in ArcGIS

This is surprisingly difficult to search for, so I'll ask though it may be a silly question. Is it possible to chain several model-builder models in sequence, such that one will automatically run with ...
1
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1answer
684 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 ...
2
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0answers
130 views

Joining nearest neighbor small polygons using R

The figure shows a plot of numerous polygons (zoom in) made from a raster file by require(sp) require(raster) pol100 <- rasterToPolygons(r, fun=function(x){x==1}, dissolve=FALSE) There polygon ...
2
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1answer
72 views

How do I create smaller maps for publishing from multiple tiles representing a large map using QGIS?

I am completely new to cartography and QGIS - I'm a writer, editor and acceptable designer (Adobe Creative Suite). I wish to produce PDF tour guides featuring maps that display a route. One version ...
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0answers
64 views

Getting a final count of integrated points from map [Add XY, Merge, Integrate]

I'm trying to get a final count of points in my data, using ArcGIS for Desktop, 10.1 with an advanced license. The data I'm working with is about 2,000 addresses from 10 sets of data taken by ...
2
votes
1answer
455 views

Merging polylines together keeping the attributes of the largest one

I have a set of polygons with polylines running through them. I am trying to assign the polylines the polygon ID that they pass through the most. I have already split the polylines to the polygon ...
0
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3answers
101 views

Grouping Multiple Raster Layers

My question is how to create multiple raster layers group, for example when using several aerial photos. I wish to group the layers into one so that I can edit/select as a batch rather than having to ...