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Questions tagged [spatial-relationship]

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25 views

What closeness measures are appropriate to this undirected graph?

I need a way to measure the closeness centrality of every single NODE(i) in respect to all NODES(j), 1 NODE(i) to all NODES(j) and, another measure that describe somehow the geometric properties of ...
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39 views

Connecting Geodesign and attributes of two layers using QGIS?

I'm kind of new in QGIS and I wonder if there is a function or a tool to connect Geodesign and attribute of two layers, for example: I have a line vector layer named as (MT) with the attribute below ...
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1answer
97 views

Geopandas intersects/contains fails between GeoDataFrames

I am struggling to make the GeoDataFrame functions: intersects/contains work between GeoDataFrames instances. Let t be a GeoDataFrame with contents: id ...
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1answer
42 views

Is SDO_GEOM.RELATE returning erroneous results?

I believe I am getting some erroneous results when performing SDO_GEOM.RELATE with my spatial query. Given the following query: select SDO_GEOM.RELATE( MDSYS.SDO_GEOMETRY(2003, 4326, NULL, ...
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1answer
78 views

Role of boundaries when using shapely within function

According to the shapely documentation: object.within(other) Returns True if the object’s boundary and interior intersect only with the interior of the other (not its boundary or exterior) ...
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1answer
183 views

Create a pivot table for m-n relationship in QGIS?

My dataset comprises many polygons representing workspaces over a large area: -1 vector layer comprising my polygons (each polygon ID appears 1 time) For my online atlas however I need to obtain a ...
4
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2answers
376 views

Find LineStrings with common segments in PostGIS 2.3

I would like to find LineStrings with common segments ('collinear', i.e. LineStrings that have 2 or more consecutive points in common) with PostGIS. I'm not shure if I'm missing something, but ...
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87 views

Creating multiple polygon features based on the number of point features contained

Software: ArcGIS Desktop 10.x or ArcGIS Pro I have a polygon dataset, and a point dataset. Any number of points (or zero points) may intersect with the polygon. I need to generate a new polygon ...
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137 views

show relations between polygons by highlighting polygons

Is it possible to show relations (for example traffic flow) between polygons (for example counties) by highlighting related polygons by doing a query on a start polygon using QGIS? Here is an ...
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243 views

Overlap Analysis of two rasters (heat maps) in QGIS?

I would like to analyse two different heat maps I have created from point data and to understand areas where hot spots overlap with each other. To add a back story I need to understand the overlap of ...
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1answer
282 views

SpatiaLite : update table with a spatial relationships

In a SpatiaLite DB, I am trying to update the value of a set of entities of a layer (table1) selected by a spatial relationship (equals) with entities from another layer (table2) I can perform a ...
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1answer
66 views

How to find parent-child relationships between geometric features? Or is there another way of dealing with GIS data?

I have bunch of shapefiles from OpenStreetsMap. A simple understanding of human is that we know which feature is inside which feature. And it's mathematically constrained. In other words, it's ...
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2answers
532 views

Filling a field in a layer using a spatial relation with another layer/shapefile?

I want to know how I can fill in a column of a layer based on a certain relation criteria to another layer. In my case I want the column "straat" in my "bomen" shapefile filled in with the value's of "...
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2answers
369 views

Correlation between layers

I am trying to determine the relationship between multiple factors (slope(from dem-raster), aspect(from dem-raster), proximity to settlements (buffers-polygon)) with fire events(point data, with date ...
5
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2answers
584 views

Finding 2nd order polygon neighbors (and 3rd, 4th etc.) using ArcGIS for Desktop?

I have a shapefile of contiguous polygons and for each pair of polygons, I need to know how many polygons are between them, following an neighboring/bordering approach. The output is likely to be a ...
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97 views

Shape comparison language (SCL) - get shapes which intersect extent border

I am trying to write a SCL string for my ArcGIS query, which should return only shapes which are intersected by a border of a rectangular shape (extent). So far the closest I've got is the following: ...
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295 views

Placing a label based on a point's location within a polygon

I have a polygon dataset and a point data set with occupants. I need to label the occupants of the house within the polygon and need the label to show up on the side associated with its polygon. ...
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2answers
290 views

How can I check if all boundaries of a polygon coincides with one or more of a set of lines

I have a polygon shapefile, and theoretically, all features in the shape are bounded by the union of some lines in another shapefile. Is there any way to confirm if this is true? I'm using QGis, FME ...
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2answers
7k views

What is the difference between Intersect & Overlap in ArcGIS Server?

When you run a Query Task on the ArcGIS Server's REST Endpoint, you need to give a spatialRel There are two spatial relationships which are quite similar: esriSpatialRelIntersects & ...