---
name: "Bio::MapIO"
section: "3pm"
platform: "linux"
package: "libbio-perl-perl"
version: "1.7.2-3"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/Bio::MapIO"
---

# Bio::MapIO(3pm)

A Map Factory object

## NAME

Bio::MapIO - A Map Factory object

## SYNOPSIS

```
    use Bio::MapIO;
    my $mapio = Bio::MapIO->new(-format => "mapmaker",
                               -file   => "mapfile.map");
    while( my $map = $mapio->next_map ) {
        # get each map
        foreach my $marker ( $map->each_element ) {
            # loop through the markers associated with the map
        }
    }
```

## DESCRIPTION

This is the Factory object for reading Maps from a data stream or file.

## FEEDBACK

### Mailing Lists

User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to the Bioperl mailing list.  Your participation is much appreciated.

```
  bioperl-l@bioperl.org                  - General discussion
  http://bioperl.org/wiki/Mailing_lists  - About the mailing lists
```

### Support

Please direct usage questions or support issues to the mailing list:

*bioperl-l@bioperl.org*

rather than to the module maintainer directly. Many experienced and  reponsive experts will be able look at the problem and quickly  address it. Please include a thorough description of the problem  with code and data examples if at all possible.

### Reporting Bugs

Report bugs to the Bioperl bug tracking system to help us keep track of the bugs and their resolution. Bug reports can be submitted the web:

```
  https://github.com/bioperl/bioperl-live/issues
```

## AUTHOR - Jason Stajich

Email jason@bioperl.org

## APPENDIX

The rest of the documentation details each of the object methods. Internal methods are usually preceded with a \_

### new

```
 Title   : new
 Usage   : my $obj = Bio::MapIO->new();
 Function: Builds a new Bio::MapIO object
 Returns : Bio::MapIO
 Args    :
```

### format

```
 Title   : format
 Usage   : $format = $stream->format()
 Function: Get the map format
 Returns : map format
 Args    : none
```

### Bio::Factory::MapFactoryI methods

### next\_map

```
 Title   : next_tree
 Usage   : my $map = $factory->next_map;
 Function: Get a map from the factory
 Returns : L<Bio::Map::MapI>
 Args    : none
```

### write\_map

```
 Title   : write_tree
 Usage   : $factory->write_map($map);
 Function: Write a map out through the factory
 Returns : none
 Args    : L<Bio::Map::MapI>
```

### attach\_EventHandler

```
 Title   : attach_EventHandler
 Usage   : $parser->attatch_EventHandler($handler)
 Function: Adds an event handler to listen for events
 Returns : none
 Args    : L<Bio::Event::EventHandlerI>
```

### \_eventHandler

```
 Title   : _eventHandler
 Usage   : private
 Function: Get the EventHandler
 Returns : L<Bio::Event::EventHandlerI>
 Args    : none
```

### \_load\_format\_module

```
 Title   : _load_format_module
 Usage   : *INTERNAL MapIO stuff*
 Function: Loads up (like use) a module at run time on demand
 Example :
 Returns :
 Args    :
```

### \_guess\_format

```
 Title   : _guess_format
 Usage   : $obj->_guess_format($filename)
 Function:
 Example :
 Returns : guessed format of filename (lower case)
 Args    :
```