R/findSubsets.R

Defines functions `findSubsets`

# Copyright (c) 2019, Adrian Dusa
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, in whole or in part, are permitted provided that the
# following conditions are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * The names of its contributors may NOT be used to endorse or promote products
#       derived from this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL ADRIAN DUSA BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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`findSubsets` <-
function(input, noflevels, stop, ...) {
    other.args <- list(...)
        if ("row.no" %in% names(other.args)) {
            input <- other.args$row.no
        }
        if ("maximum" %in% names(other.args)) {
            stop <- other.args$maximum
        }
    stop <- ifelse(missing(stop), prod(noflevels), stop)
    result <- lapply(input, function(x) {
        .Call("C_findSubsets", x, noflevels - 1, rev(c(1, cumprod(rev(noflevels))))[-1], stop, PACKAGE = "QCA")
    })
    return(sort(unique(unlist(result))))
}

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QCA documentation built on May 2, 2019, 4:47 p.m.