Hacking Google Maps and Google Earth (ExtremeTech)

Chapter 9 — Using Overlays 155 } } } request.send(null); } } The basic process is as listed earlier — the page is loaded, and du ...

156 Part III — Google Map Hacks Generating an XML File Dynamically In the previous example a static XML file was generated by ad ...

Chapter 9 — Using Overlays 157 The most important line in this script is the one that outputs the HTTP header. When supplying XM ...

158 Part III — Google Map Hacks Listing 9-6:Creating the Table Structure #!/usr/bin/perl use DBI; my $dbh = DBI->connect( ‘db ...

Chapter 9 — Using Overlays 159 my ($title,$lng,$lat) = split /:/; $dbh->do(sprintf(‘insert into ch09_simple values(%s,%s,%s)’ ...

160 Part III — Google Map Hacks Listing 9-8(continued) push(@lines, sprintf(‘<marker lat=”%f” lng=”%f” title=”%s”/>’, $row ...

Chapter 9 — Using Overlays 161 printf(‘<marker lat=”%f” lng=”%f” title=”%s”/>’, $row->{lat}, $row->{lng}, $row->{ ...

162 Part III — Google Map Hacks Listing 9-10: Adjusting the JavaScript to Create an Information Window function addmarker(x,y,ti ...

Chapter 9 — Using Overlays 163 Creating More Detailed Windows from XML and XSLT The Extensible Stylesheet Language (XSL) provide ...

164 Part III — Google Map Hacks Listing 9-11 (continued) { printf(‘<marker lat=”%f” lng=”%f” title=”%s”><infowindow> ...

Chapter 9 — Using Overlays 165 Listing 9-12: The XSL <?xml version=”1.0” encoding=”ISO-8859-1” ?> <xsl:stylesheet versi ...

166 Part III — Google Map Hacks Listing 9-13 (continued) request.open(‘GET’,’/examples/ch09-11.cgi’, true); request.onreadystate ...

Chapter 9 — Using Overlays 167 You can see the resulting information window in Figure 9-4. The information displayed is much mor ...

168 Part III — Google Map Hacks Dividing the Application into Components Before the specific scripts and elements are described, ...

Chapter 9 — Using Overlays 169 The final system relies on three components:
An HTML file with embedded JavaScript that provides ...

170 Part III — Google Map Hacks script that provides an interface to the database. The CGI script is asked for a list of cities, ...

Chapter 9 — Using Overlays 171 Listing 9-16: Loading Markers for a City function loadcity(index) { map.clearOverlays(); message. ...

172 Part III — Google Map Hacks Moving the Map and Adding Information When the user clicks a restaurant in the information windo ...

Chapter 9 — Using Overlays 173 Calculating Where to Center the Map The final stage of moving the map to the location of the city ...

174 Part III — Google Map Hacks Listing 9-20: Updating the onLoad() Function function onLoad() { if (GBrowserIsCompatible()) { i ...