Displaying 4 results from an estimated 4 matches for "sangiorgio".
2005 Oct 21
2
Finding the neighbors of the point
Dear all,
I got point data of trees. I was wondering if anybody has experience in searching the neighbors within a specified distance efficiently.
X Y Z
99 34 65
98 35 29
98 34 28
99 33 33
98 32 23
99 33 21
99 33 22
99 32 24
99 30 23
...
What I want to do is : searching for the neighbors with a distance R for each tree & the neighbor must have a bigger Z.
2007 Mar 12
1
Analysis of 3-dimensional spatial point patterns
I am trying to determine how to evaluate homogeneity of points in
three-dimensional space.
In two-dimensional data, I have used functions available in the Spatial
package
and I've have looked into the spatstat package
but, as far as I can tell, neither appears to handle 3-dimensional
data.
Is there another version, package, or software that does the same type
(G-function,
2002 Jun 17
5
R-1.5.1 is released
...ently-named match columns
failed. (PR#1510)
o NAs in right-justified unquoted character matrices were being
mis-aligned. This mainly affected printing data frames.
o predict.*bSpline() bugs extrapolating for deriv >= 1 (PR#1473),
and predict.[bn]s bug e.g. for bs(x), reported by Ch.Sangiorgio.
o qr.X was failing if n < p. Fixed, but only in the case when
pivoting does not occur. (PR#1519)
o xx[, 1:3] was returning a list if xx had only one row, even
though xx[1, 1:3] was a data frame. (PR#1530)
o nls() was reporting incorrectly the number of iterations if the
maxim...
2002 Jun 17
5
R-1.5.1 is released
...ently-named match columns
failed. (PR#1510)
o NAs in right-justified unquoted character matrices were being
mis-aligned. This mainly affected printing data frames.
o predict.*bSpline() bugs extrapolating for deriv >= 1 (PR#1473),
and predict.[bn]s bug e.g. for bs(x), reported by Ch.Sangiorgio.
o qr.X was failing if n < p. Fixed, but only in the case when
pivoting does not occur. (PR#1519)
o xx[, 1:3] was returning a list if xx had only one row, even
though xx[1, 1:3] was a data frame. (PR#1530)
o nls() was reporting incorrectly the number of iterations if the
maxim...