Osm.pm

Introduction

The osm.pm file is a PERL module that contains a lot of useful functions for the daily work with osm data files, the current version is Version 8.4.

Functions

File

The file functions will work with *.osm and *.osm.bz2.

• openOsmFile ($file) - open osm file and $line is set to first node
• closeOsmFile ()
• stringFileInfo ($file) - gives you a string with file name and date
• nextLine() -reads filehandle and returns next line
• seek_to_way_section() -jumps node section and goes to the first way
• seek_to_relation_section() - similarly to previous, this goes to relations

Nodes

• skipNodes () - after open file you don't have to parse the nodes if you only want ways
• getNode () - returns ($gId, $gLon, $gLat, $gU, \@gTags) and sets $line forward accordingly. returns (-1, -1, -1, -1, -1) if no more nodes.
• getNode2 () - returns ($gId, $gLon, $gLat, $gU, $ref1) making use of readNode()
• getNode3 () - returns ($ref0, $ref1) without further elaboration on property hash
• readNode () - returns ($propRef, \@nodeTags) using getProperties()
• getProperties () - parses node properties returning an hash
• getNodeXml () - ($gId, $xml) returns id and xml of the node, advancing the line

Ways

• skipWays () -
• getWay () - returns ($gId, $gU, \@gNodes, \@gTags). returns (-1, -1, -1, -1, -1) if no more ways.
• getWay2 () -
• getWay3 () -
• readWay () -
• getWayXml () -
• APIGetWay($wayId) - get way from OSM database

Relation

• getRelation () - returns ($gId, $gU, \@gNodes, \@gTags). returns (-1, -1, -1, -1, -1) if no more ways.
• getRelation3 () -
• readRelation () -
• getRelationXml () -

Geometry

• crossing (g1x1,g1y1,g1x2,g1y2,g2x1,g2y1,g2x2,g2y2) - check for a crossing of two line segments. returns ($sx, $sy) (0,0) if no crossing was found.
• hashValue ($lon, $lat) - returns a hashValue for coordinates, hash size 0.1 degrees
• hashValue2 ($lon, $lat) -
• angle (x1,y1,x2,y2) - gives you the angle from point one to point two. (N=0,E=90...)
• project (x1, y1, angle, dist) - project a point from point 1 by distance and angle. returns (x2,y2)
• distance (x1,y1,x2,y2) - returns $distance in km between two points
• shortestDistance ($gx1, $gy1, $gx2, $gy2, $nx, $ny) - returns ROUGHLY the distance of node to segment in km
• checkOverlap (w1xMin, w1yMin, w1xMax, w1yMax, w2xMin, w2yMin, w2xMax, w2yMax) - check if two areas overlap. 0=no overlap, 1=overlap

HTML output

• analyzerLink($id) -url to relation analyzer
• getBugs -
• historyLink ($type, $key) - returns string which can be printed to HTML file. type = [way, node]
• josmLink -DON'T USE
• josmLinkDontSelect -
• josmLinkSelectWay ($lon, $lat, $span, $wayId) - returns string which can be printed to HTML file
• josmLinkSelectWays ($lon, $lat, $span, @ways) - returns string which can be printed to HTML file
• josmLinkSelectNode ($lon, $lat, $span, $nodeId) - returns string which can be printed to HTML file
• josmLinkSelectNodes ($lon, $lat, $span, @nodes) - returns string which can be printed to HTML file
• osbLink ($lon, $lat) - returns string which can be printed to HTML file
• osmLink ($lon, $lat) - returns string which can be printed to HTML file
• osmLinkMarkerWay ($lon, $lat,$zoom,$way) - returns string which can be printed to HTML file
• mapCompareLink ($lon,$lat,$zoom)-
• picLinkMapnik ($lon, $lat, $zoom) - returns string which can be printed to HTML file
• picLinkOsmarender ($lon, $lat, $zoom) - returns string which can be printed to HTML file
• printHTMLCellCenter ($file, $value)
• printHTMLCellLeft ($file, $value)
• printHTMLCellLeftEM ($file, $value)
• printHTMLCellLeftTwoValues ($file, $value)
• printHTMLCellRight ($file, $value)
• printHTMLFoot ($file)
• printHTMLiFrameHeader ($file, $title)
• printHTMLiFrame ($file, $title)
• printHTMLHeader ($file, $title)
• printHTMLRowStart ($file)
• printHTMLRowEnd ($file)
• printHTMLTableFoot ($file)
• printHTMLTableHead ($file)
• printHTMLTableHeadings ($file, @list)
• printHTMLTableRowLeft ($file, @list)
• printHTMLTableRowRight ($file, @list)
• printNodeList ($file, @list) - prints a table of nodes given in @list with history link.
• printWayList ($file, @list) - prints a table of ways given in @list with history link.

GPX

• printGPXHeader ($file)
• printGPXFoot ($file)
• printGPXWaypoint ($file, $lon, $lat, $text)

Misc

• tileNumber ($lat,$lon,$zoom) - returns the tile numbers ($xTile, $yTile) for osmarender or mapnik tiles
• binSearch ($value, @ref) - looks for value in array and returns $index or -1 if not found
• printProgress ($program, $osm, $startTime, $fullCount, $actualCount)
• stringTimeSpent ($timeSpent in seconds) - gives a string with formatted time.
• applyDiffFile($dbName,$fileName) - connect to a database and apply differences
• convertToLatex($text) - convert text to latex
• replaceHTMLCode($text) - replaces some HTML entities

Download

osm.pm