R/getTopFeatures.R

In orange-vertex/rdepthmap: R and depthmapX CLI interface

# Copyright 2019 Kimon Krenz
# Copyright 2019 Petros Koutsolampros
#
# This file is part of rdepthmap
#
# rdepthmap 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.
#
# rdepthmap 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 rdepthmap  If not, see <https://www.gnu.org/licenses/>.

getTopFeatures = function(spatialDataFrame, column, percent) {
  numberOfFeatures = nrow(spatialDataFrame)
  orderedFeatureIDs = order(spatialDataFrame[[column]])
  spatialDataFrame[tail(orderedFeatureIDs, percent*numberOfFeatures),]
}