#############################################################################
#
# XLConnect
# Copyright (C) 2010-2024 Mirai Solutions GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
#############################################################################
#############################################################################
#
# Creates an Excel area reference
#
# Author: Martin Studer, Mirai Solutions GmbH
#
#############################################################################
aref <- function(topLeft, dimension) {
if(is.character(topLeft))
topLeft <- as.vector(cref2idx(topLeft))
if(!is.numeric(topLeft))
stop("topLeft must be either a cell reference (character) in the form 'A1' or a numeric vector of length 2!")
if(!is.numeric(dimension) || length(dimension) != 2)
stop("dimension must be a numeric vector of length 2!")
idx2aref(c(topLeft, topLeft + dimension - 1))
}
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