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robot-pmaptest(1) [debian man page]

robot-pmaptest(1)					      General Commands Manual						 robot-pmaptest(1)

NAME
robot-pmaptest - occupancy grid map creation tool SYNOPSIS
robot-pmaptest [options] <logfilename> DESCRIPTION
robot-pmaptest is utility demonstrates the basic functionality of the pmap library and serves a handy mapping utility in its own right. Given a Player logfile containing odometry and laser data, robot-pmaptest will produce an occupancy grid map of the environment. OPTIONS
-g disable the GUI (run in console mode only). --range_max range maximum effective range for the laser in meter (default: range saved in logfile). --position_index index index of odometry device in logfile (defualt: 0). --laser_index index index of laser device in logfile (default: 0). --num_samples number number of samples in particle filter (default: 200). --resample_interval number number of scans between resampling steps. --resample_sigma width width of resampling gaussian. --num_cycles number number of optimization cycles in the fine phase (default: 100). --robot_x position initial position of the robot on the x-axis. --robot_y position initial position of the robot on the y-axis. --robot_rot rotation initial rotation of the robot in degrees. --grid_width width width of the grid in meters (default: 64.0). --grid_height height height of the grid in meters (default: 48.0). --grid_scale scale scale of the grid in meters per cell (default: 0.10). --laser_x position position of the laser scanner on the robot. --laser_rot rotation rotation of the laser scanner on the robot in degrees. --robot_hostname hostname the hostname of the robot to verify in the logfile. --robot_hostname hostname the hostname of the robot to verify in the logfile. --skip time amount of time to skip between log entries. --range_resresolution resolution of the laser (only used inlodo, not lodo2 which is currentlyused). --action_model_xx factor believe factors in the change of the robot's pose. --action_model_rx factor believe factors in the change of the robot's pose. --action_model_rr factor believe factors in the change of the robot's pose. AUTHOR
Player was written by Brian Gerkey <gerkey@users.sourceforge.net> and contributors. This manual page was written by Daniel Hess for the Debian Project. SEE ALSO
The HTML documentation in /usr/share/doc/player/html of the robot-player-doc package. robot-playervcr(1) Player May 2009 robot-pmaptest(1)

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WWW::RobotRules(3)					User Contributed Perl Documentation					WWW::RobotRules(3)

NAME
WWW::RobotsRules - Parse robots.txt files SYNOPSIS
require WWW::RobotRules; my $robotsrules = new WWW::RobotRules 'MOMspider/1.0'; use LWP::Simple qw(get); $url = "http://some.place/robots.txt"; my $robots_txt = get $url; $robotsrules->parse($url, $robots_txt); $url = "http://some.other.place/robots.txt"; my $robots_txt = get $url; $robotsrules->parse($url, $robots_txt); # Now we are able to check if a URL is valid for those servers that # we have obtained and parsed "robots.txt" files for. if($robotsrules->allowed($url)) { $c = get $url; ... } DESCRIPTION
This module parses a /robots.txt file as specified in "A Standard for Robot Exclusion", described in <http://info.webcrawler.com/mak/projects/robots/norobots.html> Webmasters can use the /robots.txt file to disallow conforming robots access to parts of their web site. The parsed file is kept in the WWW::RobotRules object, and this object provides methods to check if access to a given URL is prohibited. The same WWW::RobotRules object can parse multiple /robots.txt files. The following methods are provided: $rules = WWW::RobotRules->new($robot_name) This is the constructor for WWW::RobotRules objects. The first argument given to new() is the name of the robot. $rules->parse($robot_txt_url, $content, $fresh_until) The parse() method takes as arguments the URL that was used to retrieve the /robots.txt file, and the contents of the file. $rules->allowed($uri) Returns TRUE if this robot is allowed to retrieve this URL. $rules->agent([$name]) Get/set the agent name. NOTE: Changing the agent name will clear the robots.txt rules and expire times out of the cache. ROBOTS.TXT The format and semantics of the "/robots.txt" file are as follows (this is an edited abstract of <http://info.webcrawler.com/mak/projects/robots/norobots.html>): The file consists of one or more records separated by one or more blank lines. Each record contains lines of the form <field-name>: <value> The field name is case insensitive. Text after the '#' character on a line is ignored during parsing. This is used for comments. The following <field-names> can be used: User-Agent The value of this field is the name of the robot the record is describing access policy for. If more than one User-Agent field is present the record describes an identical access policy for more than one robot. At least one field needs to be present per record. If the value is '*', the record describes the default access policy for any robot that has not not matched any of the other records. Disallow The value of this field specifies a partial URL that is not to be visited. This can be a full path, or a partial path; any URL that starts with this value will not be retrieved ROBOTS.TXT EXAMPLES The following example "/robots.txt" file specifies that no robots should visit any URL starting with "/cyberworld/map/" or "/tmp/": User-agent: * Disallow: /cyberworld/map/ # This is an infinite virtual URL space Disallow: /tmp/ # these will soon disappear This example "/robots.txt" file specifies that no robots should visit any URL starting with "/cyberworld/map/", except the robot called "cybermapper": User-agent: * Disallow: /cyberworld/map/ # This is an infinite virtual URL space # Cybermapper knows where to go. User-agent: cybermapper Disallow: This example indicates that no robots should visit this site further: # go away User-agent: * Disallow: / SEE ALSO
LWP::RobotUA, WWW::RobotRules::AnyDBM_File libwww-perl-5.65 2001-04-20 WWW::RobotRules(3)
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