Questions tagged [snapping]

Automatic process of moving points or features to match or coincide exactly with coordinates of another feature within a specified distance, or tolerance

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3
votes
1answer
194 views

Does Snapping work for lines as well as polygons?

I can get snapping working with polygons to form a set with full coverage but I can't get it to work with lines. What I want to do is have the end of one line segment snap to the end of another. I....
5
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2answers
408 views

Snapping function doesn't work with complex polygons in QGIS?

I need to snap out parts from a polygon. I am using the "split part" to mark the area I need to erase: In order of snapping an area, I drew a line inside the polygon. Sometimes this method does not ...
0
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1answer
267 views

ArcGIS Snap raster option doesn't work with georeferenced images

Trying to snap cells of one Landsat image with another one (older ones are sometimes totally misplaced, so I had to georeference it first), I use ArcMap's Copy tool and snap raster environment setting....
2
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2answers
226 views

ArcGIS snapping accuracy

I have a small issue regarding snapping accuracy in ArcMap 10.1 (Build 3035). I work on shape files in WGS84. In the editing options I did set the 'display measurements using' --> 20 decimal places. ...
2
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1answer
424 views

Moving multiple points from different layers to same location in QGIS?

I have this scenario : These are 2 different layers, each square has points at the corner, and the goal is to have the points of each square at the same exact location with a good accuracy (if you ...
1
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1answer
60 views

Editing snapped polygons in QGIS: is releasing of snapped vertices possible?

I have made a layer with polygons that are snapped to each other. Now I would like to edit this layer and create some extra plots in between them. Is it possible to "unsnap" the vertices? I am using ...
10
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3answers
3k views

Aligning multiple points to line in QGIS?

I would like to align multiple points to a line, or lines within a layer, using a specified tolerance or buffer around the line objects. Please refer to the sample sketch attached. For the sake of ...
3
votes
1answer
265 views

Deactivate Snapping for Measure Maptool (mActionMeasure) in QGIS temporarily

I use the QGIS measure-tool to measure distances. I often would like to deactivate the snapping temporarily while using the measure-tool. Is it possible to deactivate snapping (for example with a ...
0
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1answer
138 views

QGIS snapping to an offset outline

i'm facing a problem when it comes to snapping a line from one layer to an outline from a different layer what i'm doing is drawing a polygon and i added another style to it and had it offset ...
0
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1answer
187 views

Snapping multiple polylines to points nearby

I have a network of polylines and nodes. Each polyline starts at a point and ends at other. To be more specific, the network consists of links and nodes. The problem is that, the polylines are ...
0
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1answer
723 views

How to create a polyline in MapInfo Pro by using the snap to nodes function

I want to create a polyline in MapInfo Pro by using the snap to nodes function, which I can do. But what I am interested to know is that when a node is added to the polyline, could any of the ...
1
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1answer
136 views

Clipping multiple resampled rasters to same size using ArcGIS Desktop?

I have various rasters of environmental variables that were imported as GeoTiffs or NetCDFs. The rasters had varying cell size which I fixed by resampling them using the Snap Raster function in ...
4
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2answers
1k views

GeoTools: Calculate length along line from start vertex up to some point on the line?

I have single LineString and some Point (outside the line), I snapped it to the Line (using DistanceOp so as far as I understood the snapped point should lay on the line). How can I calculate length ...
0
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2answers
1k views

Openlayers 3 snap a layer source

I want to create a snap control of my layer. My simple example demo is here var raster = new ol.layer.Tile({ source: new ol.source.OSM({ }) }); var source = new ol.source.Vector({ ...
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0answers
110 views

Cancel/pause a Geoprocessing Task without rolling back?

I have a Snap Geoprocessing task that is for about 57,000 points to lines. The issue is I need to restart the VM it is running on. I have no idea how long it is going to run as it has been going for ...
1
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1answer
45 views

When Executing Snap Tool, Automatically select feature when Multiple found [closed]

I currently have 50,000+ points that have to be snapped to lines in my fiber network. Issue is I do not have the time (or patience) to sit here and make the selection every time there are multiple ...
0
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2answers
2k views

Snapping points to nearest points automatically in ArcMap? [duplicate]

In ArcMap, is it possible to automatically (through a tool) snap points in one point layer (A), to points in another point layer (B)? I do not wish to snap the points to a line, nor do I wish to ...
1
vote
1answer
154 views

Apply and Cancel snapping buttons missing in QGIS?

In QGIS 2.14 I can't apply or cancel snapping options, these buttons are missing. I haven't got any idea, what's the problem. The system is Win 7.
2
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1answer
88 views

Preventing layer name from snap tip blocking view in ArcGIS Pro?

When I am using ArcGIS Pro 1.2 and I get near a layer, the layer name physically pops up and it blocks my ability to see where the pointer is in relation to the line and its intersection with another ...
1
vote
1answer
110 views

Snap point to a specific line

I have been snapping points to lines using distance. In a couple of cases a point has gone to the wrong line, where there is more than two lines near each other. (see photo). How do I move the point ...
1
vote
1answer
75 views

Adjusting Points While Maintaining Line Network Node Connections

Currently I am working, within ArcGIS 10.4, on a pipe network for our water and sewer infrastructure which also contains all valves, hydrants, manholes, etc. These points are snapped to the line ...
2
votes
2answers
146 views

Filter Layerlist in Snapping Options Dialog

I have some large QGIS-Projects where I would like to filter the layerlist that is used for the advanced snapping options. Even if there are a lot of layers used in the project I only have to adjust ...
2
votes
1answer
1k views

Snap to closest polyline from point

I want to create a new layer/shapefile, containing polylines that represent a connection to a grid. I have a layer of points and a layer of polylines (see picture below), based on this I want to ...
3
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0answers
390 views

Change QGIS Snapping-Utility-Vertex-Marker

I am trying to change the appearance of the QGIS-Vertexmarker that is used when snapping is active and vertex/segment is found where you can snap to. I think i found the code snippet where in the cpp ...
1
vote
1answer
773 views

Why is ArcGIS API for JavaScript Map.setExtent snapping my extent?

I'm having some problems setting the Map extent using ArcGIS API for JavaScript 3.18. Whenever I call setExtent with myExtent, the Map ends up at some extent that is close to, but significantly ...
1
vote
1answer
916 views

Snapping point to point based on attribute?

I'm using ArcMap. I have two identical point feature classes, one snapped to a line and the other not. Each point represents a telecommunication pole and the line represents fiber optic cable. I ...
1
vote
1answer
476 views

Snap points to end points of line within 50cm radius in MapInfo Pro

Is there a way in MapInfo Pro to automatically move a point dataset to the end points of a line that's within 50cm of a point? This is an existing dataset so it's not simply turning on snapping. ...
12
votes
2answers
892 views

Is there any option in QGIS to draw parallel lines that snap on the outside part of the line (adjacent lines) that are independent from scale?

I have to draw a map of a public bus transport network and i have a problem in the avenues where a lot of lines passes by. My objective is to make a visual map where the lines in those avenues are ...
1
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0answers
412 views

Vector topology cleaning of shapefiles not showing cleaned results QGIS(2.8.6) and GRASS

I tried to do some topology cleaning with GRASS v.clean (snap tool)but the cleaned result is not showing. Using the break tool works But for some reason i have not been able to run the snap tool and ...
2
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0answers
168 views

Topology Checking issue in Qgis 2.14.1

I am working on a large data set of Road with snapping tolerance 5px with topological editing option enable. When i am zooming to the snapped vertex with zoom level upto 1:50, its looking snapped or ...
2
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0answers
58 views

QGIS Snapping is not aligned with layers

I was trying to draw lines based on hex grid, but snapping give me wrong position of hex corner. As you can see, I used snapping-advanced-25 pixel from hex grid, but it is not aligned hex grid. It ...
0
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1answer
423 views

Finding and snapping nearest point to polyline/point

I'm new to Python programming in ArcGIS, and I'm currently trying to write a script which I think is beyond me right now. Script should take each point from first layer and: Snap this point to ...
1
vote
1answer
52 views

Extend line (utility-water) to polygon (building)

I have several thousand water lines that need to simply be extended to the edge of the nearest building. Some of my lines do touch or intersect the buildings and some don't. They are ranging from a ...
2
votes
0answers
269 views

ArcGIS PRO Memory Leak Caused By Single Feature Class [closed]

I use a combination of ArcMap and PRO on a daily basis. It doesn't appear that many people are using PRO yet based on the lack of documentation online. All of layers are feature classes stored in ...
1
vote
0answers
378 views

Snapping coordinates/points across different layers in QGIS

I'm referring to the plugin that was Numerical Vertex Edit where it selected the nearest point in one layer and allowed for a copy and paste to another layer's any given point to match its coordinates....
4
votes
1answer
1k views

How to enable snapping when moving multiple features at once?

Is there a way to enable snapping when moving two or more features at once?
14
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1answer
787 views

Why is Shapely's snapping (GEO snaps) not working as expected?

I'm trying to snap two lines to each other using Shapely/Geopandas but the result of the snapping is very odd. I tried : import geopandas as gpd from shapely.geometry import * from shapely.ops ...
4
votes
1answer
838 views

Snapping two lines using Shapely

I'm trying to snap two Linestrings shapefiles using Shapely/Geopandas. I tried : import geopandas as gpd from shapely.geometry import * from shapely.ops import snap lines1 = gpd.GeoDataFrame....
4
votes
1answer
961 views

Road snapping in R - snapPointsToLine / Projection Problem

1. Introduction (you may skip this if you like) In order to implement a road snapping feature in R for recorded positioning data, I first searched the internet for possible solutions to the problem: ...
0
votes
1answer
506 views

Sticking GPS waypoints to closest road?

I am new with QGIS. I want to study the performance of different GPS receivers, and to do so I need to compute the error made by each one. The problem is that I don't have any reference to be ...
1
vote
1answer
171 views

QGIS cannot snap

I am using QGIS 2.8.1 in Linuxmint 17. When I set the snap option, the message box is like this which is different from the pictures I found on the Internet. After I setting this and reload QGIS, ...
5
votes
2answers
904 views

QGIS doesn't update some snapping options from Python

I've just installed QGIS 2.14.3 (Essen) on a Windows 7 machine, so I've got the default configuration on everything. This means that under "Settings -> Options -> Digitizing", I've got "Default snap ...
2
votes
1answer
161 views

Including snapped distance in Network Analyst route calculation?

In designing a routing tool, I'm attempting to minimize the amount of surface streets (non-motorways) needed to reach the closest facilities. The only options available in Network Analyst are snap to ...
3
votes
1answer
294 views

Snapping end lines ArcGIS 10.4

I am trying to snap 2 polylines features as the picture below : I would like to snap both end lines using tolerance distance ans only snap the nearest feature: from the red feature, choose the ...
4
votes
1answer
125 views

point created on a line not precisely on line

In QGIS I wanted to move points to the nearest lines. I checked the solutions here, but there are using tools which I am not familiar to yet(POSTGIS or GRASSGIS). I figured out my own way with using ...
6
votes
2answers
1k views

How to enable/disable snapping functionality with PyQGIS?

Goal: The snapping functionality should be enabled and disabled. I use the function setSnapSettingsForLayer. Convenience function to set snap settings per layer. Short Example: QgsProject.instance()....
0
votes
2answers
170 views

How to use edge match tool for a larger tolerance? It seems that snapping tolerance didn't work [closed]

When I use edge snapping in spatial adjustment to connect two layers, I find that it works on the lines which are close to each other (about 3 meters). But when the distance became large (about 8 ...
3
votes
0answers
286 views

MODIS Imagery Orthorectification (Open Source)

I am looking for an open source free software/tool for orthorectification/Geometric terrain correction of MODIS imagery. I have looked at ESA (European Space Agency) SNAP but this sensor type is not ...
1
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0answers
62 views

qgis snaps to outside instead of boundary

I have polygon layers that I need to be covered by other polygon layers, and many of my inner layers have a vertex on the border of an outer layer or in some cases they share an edge. Both ST_Covers ...
3
votes
1answer
236 views

How can I aggregate coordinate points attributes from multiple similar layers into one layer following a specific route in QGIS

I'm new in QGIS (and GIS in general). I posted a screenshot to help you understand my question. I have data from 3 different runs measuring air quality in the streets shown in the screenshot. As you ...