Questions tagged [erase]

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

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27 views

Line still appearing but not existing in the metadata of a shapefile

For a project, I had to merge the cells of a grid to upscale it. It was possible to merge all I wanted but there is kind of a displaying problem: there is this line which appears visualy but that is ...
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1answer
31 views

Erasing Image using Google Earth Engine

Could someone give an suggestion about how to erase an image using another image? Like erase concept in ArcMap. Like so:
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1answer
55 views

Removing a polygon-defined area from a multiband raster: A landscape classification inquiry

I am trying to exclude multiple lakes and reservoirs from a Supervised landscape classification but at the moment I have not found a way to do this. So far I have used the following workflows: 1.Draw ...
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1answer
55 views

Clip on ArcMap not clipping out the correct layer [duplicate]

In ArcMap 10.8 I have two shapefiles, the yellow area and the green square. I am trying to create a shapefile that is the yellow area without the green square. I want to clip the small square out of ...
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2answers
98 views

Subtracting one polygon from another in MapInfo 15

I want to make a hole in a polygon. In older versions of MapInfo I did it with ease, but how do I do it in the current version which is 15?
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1answer
125 views

Erase Overlapping QGIS Polygon using Geopandas within Jupyter

I have a Polygon of transects that contain overlapping features where they converge. I need to erase where they overlap, but still keep one of the polygons there (preferably the preceding one). ...
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1answer
27 views

Trying to define a range of values as NoData in QGIS

I have a raster from GEBCO with pixel values ranging from -5888 to 5485 m. I only want to analyze the Bathymetry so I am looking for a way to assign noData values to all values >0. I also have a ...
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0answers
52 views

Why QGIS/PostGIS makes Sliver / small polygon when using erase (difference) tool unlike ArcGIS (QGIS vs ArcMap)?

When erasing b polygon from a, sliver(or small) polygons occured along the a polygon boundary in QGIS(3.4.5). But ArcMap(10.3) does not make any slivers at all. I don't know which difference between ...
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2answers
338 views

Erasing line features based on intersecting polygons using GeoPandas?

I have two interesecting geopandas.GeoDataFrame datasets, one containing line features (lines_gdf) and one containing polygons (polygons_gdf): import matplotlib.pyplot as plt import geopandas as gpd ...
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2answers
62 views

Seeking QGIS 3.4 equivalent of MapInfo Erase Target tool?

Is there a QGIS 3.4 equivalent of MapInfo's Erase target? I'm editing a habitat map from aerial imagery, and adding in a lot of new features. I was doing this on MapInfo, so I was drawing a new ...
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0answers
65 views

Clearing raster layers in QGIS

I have TIFF raster layers in QGIS project. I need to 'erase' them ( like in MS Paint ), clean them of any smudges from low scan. I do not see a proper 'eraser' tool like that in QGIS. How can I remove ...
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1answer
77 views

Loop through input and erase features arcpy.Erase_analysis()

I am attempting to loop through two folders, one of input files (watershed polygons) and erase features (area boundaries) using arcpy.Erase_analysis Here is my current code: in_cover = "G:/Files/...
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Subtracting features from one layer using another layer in ArcGIS Desktop? [duplicate]

I have 2 layers of land parcels for a particular area (shown on top of each other like so): The darker parcel lines and road polygons are from an earlier parcel map. The land has been developed and ...
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2answers
27 views

Trying to make a toolbox from script buffer to erase to make feature layer

I am trying to take a script that I edited from a ModelBuilder export. I am trying to plug it back in to make a tool that will buffer then erase, and then make feature layers. What am I doing wrong? ...
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2answers
93 views

Getting Erase ExecuteError 999999?

I've made an arcpy script which worked last week, but I placed it somewhere different on my computer. I've made sure all the source files etc. are connected. However now I keep getting an error ...
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1answer
2k views

Function in R to get difference between two sets of polygons comparable in speed to QGIS

I have two very large polygon shapefiles for which I need to calculate the difference between the two shapefiles. One is a shapefile of forest polygons, the other is a shapefile of road polygons. I ...
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369 views

Getting empty output with Erase tool in ArcGIS Desktop?

I'm looking to isolate the parts of two hexagon feature classes that overlap: I thought that I could use the Overlay > Erase tool to do this. The "input feature" would be the first image,...
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1answer
45 views

Erasing part of line vector outside raster region using GRASS?

I need to delete all the vector 'part' that it's outside the yellow raster region. How can I do it?
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2answers
426 views

OGR2OGR Differencing Vector Layer

This is related to the link attached below and in my case, it is not working properly. Can ogr2ogr "reverse clip" (or "clip out" or "erase" or "difference") ...
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1answer
262 views

st_difference (erase overlapped feature) line from polygon

I have two layers. One is MultiLineString and the other is MultiPolygon. I am trying to erase lines that are on the polygon feature With QGIS difference tool, it worked just fine This is my code and ...
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83 views

QGIS/PostGIS Difference Geoprocessing with tolerance

This is probably an extended question from my another question (Increase spatial query performance (st_difference)) This is the background is this. I have a road link and a tunnel link. From the road ...
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3answers
949 views

Increase spatial query performance (st_difference)

I have two link tables one is 9029 rows (and let's say this table is A) and the other is 11698 rows (and this table is B) the both tables are road link and A is for tunnel link and B is road link ...
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1answer
30 views

Erasing small polygon which is overlaid by bigger polygon?

There is a huge recreation area but inside this recreation area there is some other zoning. I finished creating all polygons but this recreation area polygon overlaps with the small zoning polygons ...
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1answer
899 views

Turning on raster painting toolbar of ArcMap?

My aim is to delete raster cells using the erase tool in the raster painting toolbar. However, the raster painting tool bar won't turn on in ArcMap (it is greyed out), as the screenshot below. How do ...
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1answer
287 views

Processing Problems with the Difference (QGIS) and Erase (ArcGIS) Tool with big data

I am struggling with processing a huge data set. I downloaded it from a German geodata site (https://download.geofabrik.de/europe/germany.html). I downloaded the ZIP of Bavaria and clipped the eight ...
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1answer
276 views

Erase tool doesn't erase all inputs

When I execute the Erase Tool in ArcGIS it does not erase all of the features in the input class. The Input and Erase features are both polygons. I have attempted multiple times, hoping it was just a ...
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1answer
172 views

Iterating through erase features while Input feature == output feature using ArcGIS ModelBuilder?

I have a polygon which represents a large area. Smaller polygons should be used to erase pieces step by step from of the large area polygon. For this purpose, I use the Model Builder in ArcGIS. My ...
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4answers
742 views

Handling large datasets with Erase/Dissolve in ArcGIS (Dissolve alternative?)

I have what should be a simple problem: erase a large multipart polygon layer from a larger polygon (see below for example). However, I believe the Arc Erase tool is trying to erase each part of the ...
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1answer
108 views

In ArcGIS there is a Erase Point tool how can this be done in R

I have a SpatialPolygoneDataFrame and a SpatialPointsDataFrame I would like to erase the points inside of the polygon, Keeping only the points outside and all of the data. I am new to GIS in R moving ...
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0answers
522 views

PostGIS st_difference similar to ArcGIS Erase?

I am attempting to replicate the ArcGIS erase tool in PostGIS. Here is the problem I am working with Two Layers land use land cover (150,000) multipolygon table multipolygon soils table (30,000) ...
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2answers
107 views

Removing lakes from a country polygon [duplicate]

I have two polygon layers: one indicating countries, and other on top indicating lakes. I want to create a new layer that keeps the countries but have the lakes cut out of them. What tool do I use?
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1answer
87 views

Difference between layers using ArcGIS Geoprocessing?

I'm wondering if there is somewhere to get an output shapefile based on the difference between two layers. This would basically be the opposite of the clipping tool. for example. I have a roads ...
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1answer
666 views

Erase tool for polylines with ArcGIS Standard License

I have a very long polyline representing a pipeline. I also have another feature class with smaller polylines which are coincident with the pipeline. I am trying to cut the pipeline with the smaller ...
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1answer
476 views

PostGIS erase logic and speed

I have 2 Polygon layers. 3.5 million records of all NJ Parcels and a 1 record state wide polygon shapefile of NJ. My goal is to emulate the ArcGIS erase analysis too where I would essentially erase ...
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1answer
225 views

Adding clip function to python buffer script

I have posted my script for buffering and dissolving polygons. Could someone help me incorporate an Erase function in order to erase the input file from the buffer? Script: import arcpy infc = r'...
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0answers
149 views

Polygon Erase through PyQGIS

I'm very beginner in QGIS and I want to erase Features by using PyQGIS. I have written this code. So far, it give me the geometry of each feature polygon layer, but I don't know how to erase it ...
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1answer
209 views

Mapinfo SQL - create table that shows where a new polygon does not intersect with another

I am attempting to carry out SQL to - create a table that shows where a new polygon (Proposed BMO Overlays) does not intersect with another (Existing BMO Overlays). I have attached an image on my Map ...
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3answers
605 views

Erasing small polygons from bigger overlapped polygons using ArcGIS for Desktop?

I have different bigger polygons (buffers) which are overlapped (A,B,C,...) and the inner smaller ones (a,b,c,...). I want to erase smaller ones from bigger ones in the way the results be A-a, B-b, C-...
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1answer
163 views

How do I get unique names for model builder outputs?

I have set up a model that erases designated restricted areas such as Flood zones, SSSI, national parks etc, each erase is linked from the output to the next erase going step by step through all the ...
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1answer
647 views

Using erase tool in Python?

I am trying to create a python scrip to batch erase shapefiles. I have created a script that works, however, I know there is a better way and I just am not good enough at scripting to figure it out. ...
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2answers
941 views

Getting rid of feature points within buffer using ArcGIS Desktop?

I've created my buffer, 10 m around surrounding streets, now I need to remove all trees (points) that are within that buffer but I'm having trouble doing so! I've tried clipping but I guess my input/...
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0answers
14 views

Erasing extent of one layer using another layer using ArcMap? [duplicate]

I have two layer files which mark the extent of some vegetation types. The base layer includes some areas which does not need to be included. The second layer is solely comprised of unnecessary area ...
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3answers
327 views

Is there a script to batch erase the equivalent of a shp to multiple other shps? (in ArcGIS)

I'm looking for a way to be able to frequently update a bunch of shapefiles (different land use and other areas). I would like to erase from them the lakes and rivers which are in another shape (hydro....
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1answer
5k views

Erasing without Erase Tool licensed? [duplicate]

I'm brand new to GIS (and this site) so bear with me if there is an obvious answer for this but I've done a lot of looking and haven't found anything that worked. I have two polygon layers that show ...
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1answer
220 views

Using Erase tool for replacement ArcGIS for Desktop? [closed]

I have two layers (polygon type) and i want to erase the red polygon from the pale blue polygon, so i will get another polygon just without the red polygon feature. I'm work with desktop license, so ...
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1answer
325 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, ...
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1answer
402 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 ...
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1answer
125 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() ...
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2answers
1k 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 ...
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1answer
203 views

Erase polygon from line to get line using ArcGIS for Desktop?

How can I erase a polygon from a line to get the erased line? Conceptual image below.