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

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11
votes
2answers
3k 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
21k 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 ...
2
votes
2answers
475 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 ...
6
votes
1answer
651 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 ...
7
votes
1answer
5k views

Distinction between Difference and Clip tools in QGIS?

What is the primary distinction between the Difference and Clip geoprocessing tools in QGIS?
7
votes
1answer
411 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
3answers
4k views

How to subtract (erase) polygons from polygon?

I have two polygon layers, one is green that represents all non-public right-of-way land. I have another polygon that is just a circle with a specified radius. I would like my output to be a polygon ...
2
votes
2answers
203 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 ...
4
votes
1answer
139 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 ...