寻找DNAmotif小程序
@point=(
[36,0,112,200,0,112,18,18,22,0,0,0,200,112,], #A
[0,0,0,0,200,0,9,0,0,0,0,0,0,0,], #C
[0,0,0,0,0,22,0,9,0,200,0,0,0,22,], #G
[72,200,22,0,0,0,27,27,112,0,200,200,0,0,], #T
);
$count=1;
$dna_filename=listeria;
unless(-e $dna_file){
print "File "$dna_filename" doesn\'t seem to exist!!\n";
exit;
}
unless(open (DNAFILE, $dna_filemane)){
print "Cannot open file "$dna_filename"\n\n";
}
@DNA=<DNAFILE>;
close DNAFILE;
$DNA=join('',@DNA);
$DNA=~s/\s//g;
for($position=0;$position<(length $DNA)-14;$position++){
$DNAf=substr($DNA,$position,14);
@DNAf=split('',$DNAfragment);
for($i=0;$i<14;$i++){
if ($DNAf[i] eq 'A'){
$count*=$point[0][i];
}
elsif($DNAf[i] eq 'C'){
$count*=$point[1][i];
}
elsif($DNAf[i] eq 'G'){
$count*=$point[2][i];
}
else{
$count*=$point[3][i];
}
if($count>100000){
$position1=$position+13;
print "$position $position1 ";
print "$DNAf\n";
}
}
}
可以运行，但每次都说找不到listeria文件，我把这个文件放到这个程序同一个文件夹里的，到底应该放哪里呢？
[解决办法]
cd C:/Perl64/homework
perl your.pl
