fromDataFrame: Create a spatial index from data.frame
In rossklin/flanner: Approximate nearest neighbours queries
Description
Usage
Arguments
Details
Description
Precomputes a spatial lookup structure for later nearest
neighbour queries.
Usage
1
fromDataFrame(df, maxleaf = 10L)
Arguments
df
data.frame containing set of points (one per
row)
maxleaf
maximum number of nodes in a leaf, trade
off between faster queries and slower build times (small
maxleaf) and slower queries and faster build times (large
maxleaf)
Details
nanoflann documentation suggests a value between 10
(default) and 50 for query-heavy applications. As with
lookupKNNDataFrame this is a lower level
function that performs no sanity checking (such as df
containing only finite numbers and no NA).
rossklin/flanner documentation built on May 27, 2019, 11:39 p.m.
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Description Usage Arguments Details
Description
Precomputes a spatial lookup structure for later nearest neighbour queries.
Usage
1 | fromDataFrame(df, maxleaf = 10L)
|
Arguments
df |
data.frame containing set of points (one per row) |
maxleaf |
maximum number of nodes in a leaf, trade off between faster queries and slower build times (small maxleaf) and slower queries and faster build times (large maxleaf) |
Details
nanoflann documentation suggests a value between 10
(default) and 50 for query-heavy applications. As with
lookupKNNDataFrame this is a lower level
function that performs no sanity checking (such as df
containing only finite numbers and no NA).
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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