438 reputation
313
bio website
location
age
visits member for 2 years, 2 months
seen 17 hours ago

Jan
19
accepted Map a function over the columns of an M x N array
Jan
7
comment Using cursors with result sets to reduce memory usage
It looks like you're using MySQL, whereas I am using PostgreSQL. Might the problem lay in Postgres' JDBC driver not playing nice with resultset streaming?
Dec
2
awarded  Notable Question
Dec
2
awarded  Yearling
Nov
27
revised Building bounded polygon around heatmap (or points)
Added ConvexHullMesh idea.
Nov
27
revised Building bounded polygon around heatmap (or points)
Added GeoDisk approach.
Nov
27
comment Building bounded polygon around heatmap (or points)
This is certainly a good start. And I am surprised it used graphs to do it. So now the trick is to extend it to encircle some distance around all the piracy events - So the resulting polygon captures the area around where piracy is active, rather than just the area between piracy events. This is the part that I'm having the most trouble with.
Nov
26
comment Building bounded polygon around heatmap (or points)
@Rahul that would generate a plot of what I'd like - good to visualize, but I'm trying to get a bounding polygon of the areas. I'm using the bounding polygon to load into google earth and other apps for filtering.
Nov
26
comment Building bounded polygon around heatmap (or points)
It's freeform data reported by victims. In their defence, thieves and pirates should be counted differently. The outcomes are very, very different.
Nov
26
revised Building bounded polygon around heatmap (or points)
Added heatmap.
Nov
26
revised Building bounded polygon around heatmap (or points)
Removed filtering out invalid positions.
Nov
25
comment Building bounded polygon around heatmap (or points)
I'm positive I've seen it (or a version of it) in examples before. I just can't remember where.
Nov
25
comment Building bounded polygon around heatmap (or points)
arrr!! Yea be right. We may be righteous, but we got no booty!
Nov
25
asked Building bounded polygon around heatmap (or points)
Nov
18
awarded  Tumbleweed
Nov
11
revised How to determine if a point is within a geopositioned RegionMember
Updated with more complete understanding of problem.
Nov
11
revised How to determine if a point is within a geopositioned RegionMember
Added example polygon.
Nov
11
revised How to determine if a point is within a geopositioned RegionMember
Fixed title
Nov
11
asked How to determine if a point is within a geopositioned RegionMember
Nov
9
comment How to split a Dataset into training and testing for machine learning?
Functions for working with Datasets to build test sets for statistics/sampling in general would be very useful. This is quite complex for most cases where you have pre-labeled data.