The action of removing data attributes or features through the processes of positive or negative selection and deletion.

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11
votes
1answer
2k views

Is there a QGIS equivalent of the erase tool in ArcGIS?

Is there a QGIS equivalent of the Erase tool in ArcGIS for Desktop?
7
votes
4answers
16k views

Cutting features to do opposite of clipping in ArcGIS Desktop? [duplicate]

What´s the easiest/smartest way of getting the opposite output of the clipping tool? I just need the area of feature A1 which is not covered by feature A2 in a new Layer/File. Now, I get the result ...
7
votes
1answer
335 views

Reduce processing time in Erase function using Arcpy in IDLE

I am processing 18,000 feature classes (saved in a file GDB), each with ~500 records (polygon features) in ocean areas, and I am running a script to remove area overlapping with the coast, using the ...
6
votes
5answers
2k views

erase one line layer by another line layer

I keep on having this issue and I can't find the "perfect answer": First of all, I work in ArcGIS 9.3.1. I have 2 layers: roads1950, roads2000. I need to make a layer with roads which were ...
6
votes
1answer
4k views

What is the distinction between Difference and Clip in QGIS?

What is the primary distinction between the Difference and Clip geoprocessing tools in QGIS?
6
votes
1answer
451 views

How to 'reverse clip' (erase) in R

A reverse clip saves only the part of your spatial object that is outside the bounds of another object, as opposed to a regular clip which saves the parts that are inside the other object. Here's how ...
3
votes
1answer
327 views

Removing part of polygon from another using ArcGIS for Desktop? [duplicate]

Now I have shp of a county, which includes lake part and land part. I only have shp of the lake part but I need the land part. How can i get the land part? I think there should be some tools ...
3
votes
1answer
96 views

How to cut unwanted area (polygon) using ArcGIS for Desktop?

I am using ArcGIS 10.2 for Desktop with a Basic level license. There are two overlapping polygon. Polygon A (with line stripes) and Polygon B (in beige color). Polygon A and Polygon B is a separate ...
2
votes
2answers
100 views

Erasing buffer within another buffer without erasing overlapping buffers using ArcGIS for Desktop?

I'm not an ArcGis pro, so I need help on this one, and I have tried searching for answers. I am using ArcMap 10.2.2. I don't know how to use python. I have 6km and 12km buffers around the sites ...
2
votes
1answer
25 views

Retain the rest of the Clip (Analysis) tool in ArcGIS [duplicate]

Which tool can I use to get or keep the rest of the output feature when I use the Clip (Analysis) tool in ArcMap? For instance I need to calculate Blue minus Green. Erase (Analysis) from Overlay ...
2
votes
2answers
402 views

Erase method using ogr

I'm trying to find the erase geoprocessing method as i am familiar with in ARC, but i can't seem to find it in OGR using Python. I have looked through the module ogr documentation but perhaps i missed ...
2
votes
2answers
181 views

Erase features from feature classes based on record ID?

This is the challenge: I have two feature classes, which have the same number of polygon features, that when overlaid form concentric "rings." I need to erase the inner circle from the outer circle ...
2
votes
1answer
280 views

Easiest way to find spatial differences between Polyline shapefiles

I run into this problem a lot. I have two polyline's and I need to test for Spatial differences in them. Usually I use Erase and I have my answer, but on this PC I now only have access to ArcGIS Basic ...
2
votes
0answers
60 views

How to erase using feature(s) within the same feature class? [closed]

I develop an application and I want to erase overlay features in a feature class in the application.I use ArcEngine 10. I don't have another layer that have erase features then i cant use erase tool ...
1
vote
2answers
83 views

Clip shapefile and keep the outer part of it

I have to two polygon layers, the red layer is the the bottom layer. The second layer covers most of the bottom layer I would like to know if there is a tool that will create a polygon layer of ...
1
vote
1answer
70 views

Struggling with in_memory to erase faster

I want to delete all points inside a polygon layer: import arcpy import time arcpy.env.workspace = r"E:\DensityMaps\DensityMapsTest1.gdb" arcpy.env.overwriteOutput = True start_time = time.time() ...
1
vote
2answers
4k views

Remove overlap in raster using ERASE command line?

I am trying to erase a raster and is there a erase command for the Raster side? I am using ArcGIS 9.3.1. I have 2 rasters that are in the Landcover and there is overlap in between and would like to ...
1
vote
3answers
104 views

A mistake in very easy python code (Buffer 1 - Buffer 2- Erase 2 fom 1)

I need to make 500m rings (not full circle) around points (cities). I try to make 1. buffer: 2500 - 8500m (each 500m) and second buffer 3000 - 9000 (each 500m) and then erase 2500m from 3000m, 3000m ...
1
vote
1answer
69 views

ArcGIS - Cell Content Deletion

I have a really simple question I can't find the answer to. I'm looking to delete a range of values from an attribute table in ArcGIS 10. I'm looking for a quick way to delete about 3000 records. The ...
1
vote
0answers
51 views

How to raster clip in outside in ArcMap?

How to raster clip in ArcMap? But I need 1 raster in outside area. Because 2 raster map. Example: Ras1=Temperature.tif Ras2=Error map.tif Clip command input raster=Ras1 Output Extent= ...
1
vote
1answer
98 views

Calculate 2D line of site from line layer and polygon layer using ArcGIS 10

I'm trying to run an analysis where I need to clip a radiating lines layer by land features to get the maximum distance from the central point to the nearest obstacle. What I have is a large line ...
1
vote
0answers
148 views

Using the esri analysisTool Erase class in C#

I am trying to use eSRI.ArcGIS.AnalysisTools.Erase class but I keep getting blank layers. I can get the layer that can be used for the input and the layer for the erase. I don't really understand the ...
0
votes
1answer
808 views

Failed to delete a domain from the database

I am trying to delete a domain I am using from ArcCatalog -> Feature Class Properties-> Subtypes-> Domains. But when I try to do that I get this error message: "Failed to delete a domain from the ...
0
votes
1answer
43 views

Erase polygon from line to get line?

How can I erase a polygon from a line to get the erased line? Conceptual image below. Erase Tool does not work when mixing polygons and lines.
0
votes
2answers
58 views

Erase within a feature class - Planar enforcement

I´m using ArcGIS v10 ArcInfo. I´m working with a feature class that has 5 features which are waterdepths (1 to 5m). These features are overlapping each other. What I need, is that they are not ...
0
votes
1answer
34 views

Increase speed of reverse clip (erase) for large shapefiles in R

I would like to do a reverse clip (or erase in ArcMap) from shapefiles (polygons) then to merge the two shapefiles into a single shapefile. From this post How to 'reverse clip' (erase) in R, ...
0
votes
0answers
18 views

R: Topology Exception Error

I'm trying to do the gDifference between two polygons, but I was getting an error: Error in RGEOSBinTopoFunc(spgeom1, spgeom2, byid, id, drop_not_poly, "rgeos_intersection") : TopologyException: ...
0
votes
0answers
23 views

Assign a dummy value for removed features in a Polygon-Grid

I want to calculate the entropy index for landuses classes for an area based on a 100m Polygon Grid. I did find an existing toolbox that does all the required calculation. Input features are the 100m ...
0
votes
0answers
131 views

erase a “line feature” (erase feature) from a “polygone feature”

how can I erase a "line feature" (erase feature) from a "polygone feature" (input) in ArcGIS 10? With the tool "erase" I can only use an other "polygon feature" as erase feature for a polygon ...
-1
votes
1answer
218 views

ArcGIS Erase Function in Python

Aplogoises if this has already been solved but I'm having problems using the Erase function in ArcGIS. I have had problems using the normal function, as it throws a Error9999 Topology error amongst ...