Title : mask
Usage :
$obj
->mask(10,40,
'Z'
);
$obj
->mask(10,40);
$obj
->mask(
$bio_location_obj
,
'Z'
);
$obj
->mask(
$bio_location_obj
);
Function: masks a sequence region by replacing the respective part
with
a
custom character. If the character is omitted,
'X'
in case of
protein and
'N'
in case of DNA/RNA alphabet is used to mask the
sequence region.
Returns : the object it was invoked on
Args : integer
for
start position
integer
for
end position
custom character to
use
for
masking
OR
Bio::LocationI location
for
sequence region (strand NOT honored)
custom character to
use
for
masking