diff tables_arithmetic_operations.pl @ 0:6ff325b36382 draft

Imported from capsule None

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tables_arithmetic_operations.pl	Tue Apr 01 09:11:53 2014 -0400
@@ -0,0 +1,117 @@
+# A program to implement arithmetic operations on tabular files data. The program takes three inputs:
+# The first input is a TABULAR format file containing numbers only.
+# The second input is a TABULAR format file containing numbers only.
+# The two files must have the same number of columns and the same number of rows
+# The third input is an arithmetic operation: +, -, *, or / for addition, subtraction, multiplication, or division, respectively 
+# The output file is a TABULAR format file containing the result of implementing the arithmetic operation on both input files.
+# The output file has the same number of columns and the same number of rows as each of the two input files.
+# Note: in case of division, none of the values in the second input file could be 0.
+
+use strict;
+use warnings;
+
+#variables to handle information of the first input tabular file
+my $lineData1 = "";
+my @lineDataArray1 = ();
+my $lineArraySize = 0;
+my $lineCounter1 = 0;
+
+#variables to handle information of the second input tabular file
+my $lineData2= "";
+my @lineDataArray2 = ();
+my $lineCounter2 = 0;
+
+my $result = 0;
+
+# check to make sure having the correct number of arguments
+my $usage = "usage: tables_arithmetic_operations.pl [TABULAR.in] [TABULAR.in] [ArithmeticOperation] [TABULAR.out] \n";
+die $usage unless @ARGV == 4;
+
+#variables to store the names of input and output files
+my $inputTabularFile1 = $ARGV[0];
+my $inputTabularFile2 = $ARGV[1];
+my $arithmeticOperation = $ARGV[2];
+my $outputTabularFile = $ARGV[3];
+
+#open the input and output files
+open (INPUT1, "<", $inputTabularFile1) || die("Could not open file $inputTabularFile1 \n"); 
+open (INPUT2, "<", $inputTabularFile2) || die("Could not open file $inputTabularFile2 \n"); 
+open (OUTPUT, ">", $outputTabularFile) || die("Could not open file $outputTabularFile \n");
+
+#store the first input file in the array @motifsFrequencyData1
+my @tabularData1 = <INPUT1>;
+	
+#store the second input file in the array @motifsFrequencyData2
+my @tabularData2 = <INPUT2>;
+
+#reset the $lineCounter1 to 0	
+$lineCounter1 = 0;
+
+#iterated through the lines of the first input file 
+INDEL1:
+foreach $lineData1 (@tabularData1){
+	chomp ($lineData1);
+	$lineCounter1++;
+	
+	#reset the $lineCounter2 to 0
+	$lineCounter2 = 0;
+	
+	#iterated through the lines of the second input file 
+	foreach $lineData2 (@tabularData2){
+		chomp ($lineData2);
+		$lineCounter2++;
+
+		#check if the two motifs are the same in the two input files
+		if ($lineCounter1 == $lineCounter2){
+			
+			@lineDataArray1 = split(/\t/, $lineData1);
+			@lineDataArray2 = split(/\t/, $lineData2);
+			
+			$lineArraySize = @lineDataArray1;
+			
+			for (my $index = 0; $index < $lineArraySize; $index++){
+				
+				if ($arithmeticOperation eq "Addition"){
+					#compute the additin of both values
+					$result = $lineDataArray1[$index] + $lineDataArray2[$index];
+				}
+				
+				if ($arithmeticOperation eq "Subtraction"){
+					#compute the subtraction of both values
+					$result = $lineDataArray1[$index] - $lineDataArray2[$index];
+				}	
+				
+				if ($arithmeticOperation eq "Multiplication"){
+					#compute the multiplication of both values
+					$result = $lineDataArray1[$index] * $lineDataArray2[$index];
+				}
+				
+				if ($arithmeticOperation eq "Division"){
+					
+					#check if the denominator is 0
+					if ($lineDataArray2[$index] != 0){
+						#compute the division of both values
+						$result = $lineDataArray1[$index] / $lineDataArray2[$index];
+					}
+					else{
+						die("A denominator could not be zero \n"); 
+					}
+				}
+				
+				#store the result in the output file
+				if ($index < $lineArraySize - 1){
+					print OUTPUT $result . "\t";
+				}
+				else{
+					print OUTPUT $result . "\n";
+				}
+			}
+			next INDEL1;
+		}
+	}
+}	 
+
+#close the input and output files
+close(OUTPUT);
+close(INPUT2);
+close(INPUT1);
\ No newline at end of file