%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  GeneralizedUmatrix
%global packver   1.2.6
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.2.6
Release:          1%{?dist}%{?buildtag}
Summary:          Credible Visualization for Two-Dimensional Projections of Data

License:          GPL-3
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    R-devel >= 3.0
Requires:         R-core >= 3.0
BuildRequires:    R-CRAN-RcppParallel >= 5.1.4
BuildRequires:    R-CRAN-Rcpp >= 1.0.8
BuildRequires:    R-CRAN-ggplot2 
BuildRequires:    R-CRAN-RcppArmadillo 
Requires:         R-CRAN-RcppParallel >= 5.1.4
Requires:         R-CRAN-Rcpp >= 1.0.8
Requires:         R-CRAN-ggplot2 

%description
Projections are common dimensionality reduction methods, which represent
high-dimensional data in a two-dimensional space. However, when
restricting the output space to two dimensions, which results in a two
dimensional scatter plot (projection) of the data, low dimensional
similarities do not represent high dimensional distances coercively
[Thrun, 2018] <DOI: 10.1007/978-3-658-20540-9>. This could lead to a
misleading interpretation of the underlying structures [Thrun, 2018]. By
means of the 3D topographic map the generalized Umatrix is able to depict
errors of these two-dimensional scatter plots. The package is derived from
the book of Thrun, M.C.: "Projection Based Clustering through
Self-Organization and Swarm Intelligence" (2018)
<DOI:10.1007/978-3-658-20540-9> and the main algorithm called simplified
self-organizing map for dimensionality reduction methods is published in
<DOI: 10.1016/j.mex.2020.101093>.

%prep
%setup -q -c -n %{packname}

# fix end of executable files
find -type f -executable -exec grep -Iq . {} \; -exec sed -i -e '$a\' {} \;
# prevent binary stripping
[ -d %{packname}/src ] && find %{packname}/src -type f -exec \
  sed -i 's@/usr/bin/strip@/usr/bin/true@g' {} \; || true
[ -d %{packname}/src ] && find %{packname}/src/Make* -type f -exec \
  sed -i 's@-g0@@g' {} \; || true
# don't allow local prefix in executable scripts
find -type f -executable -exec sed -Ei 's@#!( )*/usr/local/bin@#!/usr/bin@g' {} \;

%build

%install

mkdir -p %{buildroot}%{rlibdir}
%{_bindir}/R CMD INSTALL -l %{buildroot}%{rlibdir} %{packname}
test -d %{packname}/src && (cd %{packname}/src; rm -f *.o *.so)
rm -f %{buildroot}%{rlibdir}/R.css
# remove buildroot from installed files
find %{buildroot}%{rlibdir} -type f -exec sed -i "s@%{buildroot}@@g" {} \;

%files
%{rlibdir}/%{packname}