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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
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#-------------------------------------------------------------

X = read($1, data_type="frame", format="csv", header=TRUE, 
  naStrings= ["19"]);
X = as.matrix(cbind(X[,4],X[,5]))
Y = imputeByMedian(X = X, mask = matrix("1 0", rows=1, cols=2))

write(Y, $2)
