Tagged Questions
3
votes
0answers
182 views
Topology - To be, or not to be, that is the question [closed]
Topology, I mean "real" topology, is not a new concept and it's available since a long time in GRASS gis. I won't speculate the reasons myself but, after a long period of spaghetti model ...
3
votes
2answers
544 views
Is the Fourth Dimension used in GIS?
Whilst working with OGR, I came across the following field used define a geographic dataset:
COORD_DIMENSION
The spatial dimension (2, 3 or 4 dimensional) of the column.
Whilst I've used 2D and 3D ...
51
votes
12answers
12k views
Concave Hull: Definition, Algorithms and Practical Solutions
Convex Hull
A convex hull of a shape is defined as:
In mathematics, the convex hull or convex envelope for a set of points X in a real vector space V is the minimal convex set containing X ...
