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diff --git a/man/man7/map.html b/man/man7/map.html new file mode 100644 index 00000000..1ebdfbba --- /dev/null +++ b/man/man7/map.html @@ -0,0 +1,108 @@ +<head> +<title>map(7) - Plan 9 from User Space</title> +<meta content="text/html; charset=utf-8" http-equiv=Content-Type> +</head> +<body bgcolor=#ffffff> +<table border=0 cellpadding=0 cellspacing=0 width=100%> +<tr height=10><td> +<tr><td width=20><td> +<tr><td width=20><td><b>MAP(7)</b><td align=right><b>MAP(7)</b> +<tr><td width=20><td colspan=2> + <br> +<p><font size=+1><b>NAME </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + map – digitized map formats<br> + +</table> +<p><font size=+1><b>DESCRIPTION </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + Files used by <a href="../man7/map.html"><i>map</i>(7)</a> are a sequence of structures of the form: + + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + <tt><font size=+1>struct {<br> + + <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + signed char patchlatitude;<br> + signed char patchlongitude;<br> + short n;<br> + union {<br> + + <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + struct {<br> + short latitude;<br> + short longitude;<br> + } point[n];<br> + struct {<br> + short latitude;<br> + short longitude;<br> + struct {<br> + signed char latdiff;<br> + signed char londiff;<br> + } point[–n];<br> + } highres;<br> + + </table> + } segment;<br> + + </table> + };<br> + </font></tt>where <tt><font size=+1>short</font></tt> stands for 16-bit integers and there is no padding + within or between <tt><font size=+1>structs</font></tt>. Shorts are stored in little-endian + order, low byte first. To assure portability, <i>map</i> accesses them + bytewise. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + Fields <tt><font size=+1>patchlatitude</font></tt> and <tt><font size=+1>patchlongitude</font></tt> tell to what 10-degree + by 10-degree patch of the earth’s surface a segment belongs. Their + values range from –9 to 8 and from –18 to 17, respectively, and + indicate the coordinates of the southeast corner of the patch + in units of 10 degrees. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + Each segment of |<tt><font size=+1>n</font></tt>| points is connected; consecutive segments + are not necessarily related. Latitude and longitude are measured + in units of 0.0001 radian. If <tt><font size=+1>n</font></tt> is negative, then differences + to the first and succeeding points are measured in units of 0.00001 + radian. Latitude is counted positive to the north and longitude + positive to the west. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + The patches are ordered lexicographically by <tt><font size=+1>patchlatitude</font></tt> then + <tt><font size=+1>patchlongitude</font></tt>. A printable index to the first segment of each + patch in a file named <i>data</i> is kept in an associated file named + <i>data</i><tt><font size=+1>.x</font></tt>. Each line of an index file contains <tt><font size=+1>patchlatitude, patchlongitude</font></tt> + and the byte position of the + patch in the map file. Both the map file and the index file are + ordered by patch latitude and longitude.<br> + +</table> +<p><font size=+1><b>SEE ALSO </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <a href="../man7/map.html"><i>map</i>(7)</a><br> + The data comes from the World Data Bank I and II and U.S. Government + sources: the Census Bureau, Geological Survey, and CIA.<br> + +</table> + +<td width=20> +<tr height=20><td> +</table> +<!-- TRAILER --> +<table border=0 cellpadding=0 cellspacing=0 width=100%> +<tr height=15><td width=10><td><td width=10> +<tr><td><td> +<center> +<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a> +</center> +</table> +<!-- TRAILER --> +</body></html> |