1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General
# Public License along with this library; if not, write to the
# Free Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
# Copyrights (C)
# for this R-port:
# 1999 - 2008, Diethelm Wuertz, Rmetrics Foundation, GPL
# Diethelm Wuertz <wuertz@itp.phys.ethz.ch>
# www.rmetrics.org
# for the code accessed (or partly included) from other R-ports:
# see R's copyright and license files
# for the code accessed (or partly included) from contributed R-ports
# and other sources
# see Rmetrics's copyright file
################################################################################
# FUNCTION: DESCRIPTION:
# gridVector Creates from two vectors rectangular grid coordinates
################################################################################
gridVector <-
function(x, y = NULL)
{
# A function implemented by Diethelm Wuertz
# Description:
# Creates from two vectors rectangular grid coordinates
# Arguments:
# x, y - two numeric vectors of length m and n which span the
# rectangular grid of size m times n.
# Details:
# The two vectors x and y span a rectangular grid with nx=length(x)
# times ny=length(y) points which are returned as a matrix of size
# (nx*ny) times 2.
# Value:
# returns a list with two elements X and Y each of length m
# times n
# Example:
# > gridVector(1:3, 1:2)
# [,1] [,2]
# [1,] 1 1
# [2,] 2 1
# [3,] 3 1
# [4,] 1 2
# [5,] 2 2
# [6,] 3 2
# FUNCTION:
# DW:
if (is.null(y)) y = x
# Prepare for Input:
nx = length(x)
ny = length(y)
xoy = cbind(rep(x, ny), as.vector(matrix(y, nx, ny, byrow = TRUE)))
X = matrix(xoy, nx * ny, 2, byrow = FALSE)
# Return Value:
list(X = X[,1], Y = X[,2])
}
################################################################################
|
