📄 vpfhelp.jsp
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<%@ page session="false" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><title>VPF Help</title></head><body><h1>VPF Help</h1>This is help text.<% String helpTopic = request.getParameter("topic"); %><% if (helpTopic == null) { %>No help topic was specified.<ul><li><A HREF="VPFHelp.jsp?topic=table_schema">Table Schema</A></ul><% } else if ("test".equals(helpTopic)) { %><ul><li>Current time: <%= new java.util.Date() %><li>Hostname: <%= request.getRemoteHost() %><li>Param file: <%= request.getParameter("topic") %></ul><% } else if ("table_schema".equals(helpTopic)) { %><h2>Table Schema Help</h2>This data is extracted from the VPF Standard Section 5. (MIL-STD-2407)<ul><li><b>#</b>: The position of the column in the record<li><b>Name</b>: The name of the column<li><b>Type</b>: The field type of the column. Valid values are<table BORDER=1><tr><th>Type Code<th>Datatype Description</tr><tr><td>T<td>ASCII Text</tr><tr><td>L<td>ISO Latin-1 Text</tr><tr><td>M<td>ISO Full Latin Text</tr><tr><td>N<td>ISO Multilingual Text</tr><tr><td>S<td>2-byte integer</tr><tr><td>I<td>4-byte integer</tr><tr><td>F<td>4-byte floating point (float)</tr><tr><td>D<td>8-byte floating point (double)</tr><tr><td>C<td>Array of 2-coord (Lat,Lon) floats</tr><tr><td>B<td>Array of 2-coord (Lat,Lon) doubles</tr><tr><td>Z<td>Array of 3-coord (Lat,Lon,Elev) floats</tr><tr><td>Y<td>Array of 3-coord (Lat,Lon,Elev) double</tr><tr><td>D<td>Date Field</tr><tr><td>X<td>Null (no value) field</tr><tr><td>K<td>Cross-Tile identifier</tr><tr><td><td></tr></table><li><b>Count</b>: The number of values (* indicates variable number). Types I,S,R,F,D,X,K are always 1. (e.g type T count 12 would be a twelve character ascii string)<li><b>Key Type</b>: 'P'-primary key, 'F'-foreign key, 'N'-not a key<li><b>Description</b>: a description of the column<li><b>VDT</b>: int.vdt or char.vdt if the value refers to additional info, --- otherwise<li><b>Thematic Index</b>: the name of the thematic index for this column, --- otherwise<li><b>Documentation File</b>: the name of the file with additional information about what the column is for, --- otherwise</ul><% } else { %>Other VPF help.<% } %></body></html>⌨️ 快捷键说明
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