R/onAttach.R

Defines functions .onAttach

Documented in .onAttach

# 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
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

.onAttach <- function(...) {
    msg <- paste("  Dusa, Adrian (2019) QCA with R. A Comprehensive Resource.",
                 "  Springer International Publishing.", sep="\n")
    msg <- paste(msg, "\n\nTo run the graphical user interface, use: runGUI()\n", sep="")
    if (!grepl("there is no package called", tryCatch(find.package("QCApro"), error = function(e) e))) {
        msg <- paste(msg, "\nNOTE: Found multiple functions and object type conflicts in the fork package QCApro.",
                          "\n      To avoid confusion, please uninstall it before using this software, with:\n",
                          "      uninstall(\"QCApro\")", sep="")
    }
    packageStartupMessage("\nTo cite this package in publications, please use:\n", msg, "\n")
}

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