#-------------------------------------------------------------
#
# 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
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
#-------------------------------------------------------------

X = read($1)
k = $2;

# one hot encoding
m = nrow(X)
n = ncol(X)
fdom = colMaxs(X);
foffb = t(cumsum(t(fdom))) - fdom;
foffe = t(cumsum(t(fdom)))
rix = matrix(seq(1,m)%*%matrix(1,1,n), m*n, 1)
cix = matrix(X + foffb, m*n, 1);
X2 = table(rix, cix); #one-hot encoded

[PC, V] = pca(X=X2, K=k, center=TRUE, scale=TRUE, onlyComponents=FALSE)

write(PC, $3)
write(V, $4)
