[Mapserver-users] Center map on feature?

Marcelo Carrillo marcelito20 at hotmail.com
Mon Jul 26 06:57:32 PDT 2004 

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 =0D
 Hi maybe this code can help you, this function receives a array with
positions and a distance and sets de extent of the map in order to show a=
ll
the features(points) you receive in the array.=0D
=0D
=0D
function centrarFlota($posiciones,$distancia){=0D
 $num_autos=3Dcount($posiciones);=0D
 $m=3D0;=0D
 if($_SESSION['num_pos']>0&&$posiciones[0][1]!=3D"" && $posiciones[0][2]!=
=3D""
){=0D
  $min_x=3D999999999;=0D
  $min_y=3D999999999;=0D
  $max_x=3D0;=0D
  $max_y=3D0;=0D
  =0D
  for($i=3D0;$i<$num_autos;$i++){=0D
    if ($posiciones[$i][1]!=3D"" && $posiciones[$i][2]!=3D"" ){=0D
    if ($posiciones[$i][1]<$min_x){=0D
     $min_x=3D$posiciones[$i][1];=0D
    }=0D
    if ($posiciones[$i][1]>$max_x){=0D
     $max_x=3D$posiciones[$i][1];=0D
    }=0D
    if ($posiciones[$i][2]<$min_y){=0D
     $min_y=3D$posiciones[$i][2];=0D
    }=0D
    if ($posiciones[$i][2]>$max_y){=0D
     $max_y=3D$posiciones[$i][2];=0D
    }=0D
   }else {=0D
    $_SESSION['noinfo']=3D" <span class=3D'greysmaller'>NO DATA AVAILABLE=
</span>
;=0D
    //break;=0D
   }=0D
  }=0D
  =0D
  $min_x =3D $min_x-$distancia;=0D
  $max_x =3D $max_x+$distancia;=0D
  $min_y =3D $min_y- $distancia;=0D
  $max_y=3D$max_y+$distancia;=0D
  =0D
  $_SESSION["miMap"]->setextent($min_x,$min_y,$max_x,$max_y);=0D
  $_SESSION['noinfo']=3D"";=0D
 }else{=0D
  $_SESSION['noinfo']=3D" <span class=3D'greysmaller'>NO DATA AVAILABLE</=
span>";=0D
 }=0D
 $_SESSION['map_extent']=3D $_SESSION["miMap"]->extent->minx." ".$_SESSIO=
N[
miMap"]->extent->miny." "=0D
 .$_SESSION["miMap"]->extent->maxx." ".$_SESSION["miMap"]->extent->maxy;=0D
 =0D
}=0D
=0D
Sorry for my english, hope you use it.=0D
=0D
Regards,=0D
=0D
  =0D
Marcelo Ismael Carrillo Est=E9vez=0D
BAYTEQ C=EDa. Ltda.=0D
09-8813885 =0D
"There's no place like 127.0.0.1"=0D
-------Mensaje original-------=0D
 =0D
De: mapserver at lparchaeology.com=0D
Fecha: 26/07/2004 8:39:21=0D
Para: Mapserver Users=0D
Asunto: [Mapserver-users] Center map on feature?=0D
 =0D
I would like to ask the list for any ideas about how I can centre a map=0D
on a specific site/feature.=0D
 =0D
We currently link from a site result page (generated from a database) to=0D
a map search page by grabbing the X,Y UTM zone 33 values for the site=0D
that we hold in the database. e.g. reference map  link on page:=0D
 =0D
http://www.fastionline.org/php/content.php?item=3D4&site_id=3D80&lang=3Di=
t=0D
 =0D
will take you to the main map page centred on the site.=0D
 =0D
However, we have recently begun to add sites that are in UTM zone 32. We=0D
project all this very neatly using mapserver. However, we need to think=0D
of a new way to link back from a single site to the main map centred on=0D
the site.=0D
 =0D
Any suggestions would be very welcome. Every site has a unique id which=0D
is also present in our shapefile.=0D
 =0D
Many thanks,=0D
 =0D
Guy=0D
 =0D
--=0D
Guy Hunt=0D
 =0D
L - P : Archaeology=0D
www.lparchaeology.com=0D
 =0D
 =0D
--=0D
Guy Hunt=0D
 =0D
L - P : Archaeology=0D
www.lparchaeology.com=0D
 =0D
 =0D
_______________________________________________=0D
Mapserver-users mailing list=0D
Mapserver-users at lists.gis.umn.edu=0D
http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
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Align=3Dtop width=3D"100%">
<DIV> </DIV>
<DIV> Hi maybe this code can help you, this function receives a arra=
y with positions and a distance and sets de extent of the map in order to=
 show all the features(points) you receive in the array.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>function centrarFlota($posiciones,$distancia){<BR> $num_autos=3D=
count($posiciones);<BR> $m=3D0;<BR> if($_SESSION['num_pos']>=
0&&$posiciones[0][1]!=3D"" && $posiciones[0][2]!=3D"" ){<=
BR>  $min_x=3D999999999;<BR>  $min_y=3D999999999;<BR>=
  $max_x=3D0;<BR>  $max_y=3D0;<BR>  <BR>&nb=
sp; for($i=3D0;$i<$num_autos;$i++){<BR>    if=
 ($posiciones[$i][1]!=3D"" && $posiciones[$i][2]!=3D"" ){<BR>&nbs=
p;   if ($posiciones[$i][1]<$min_x){<BR>  &nb=
sp;  $min_x=3D$posiciones[$i][1];<BR>    }<=
BR>    if ($posiciones[$i][1]>$max_x){<BR> &n=
bsp;   $max_x=3D$posiciones[$i][1];<BR>   &=
nbsp;}<BR>    if ($posiciones[$i][2]<$min_y){<BR>&=
nbsp;    $min_y=3D$posiciones[$i][2];<BR>  =
  }<BR>    if ($posiciones[$i][2]>$max_y=
){<BR>     $max_y=3D$posiciones[$i][2];<BR>&nbsp=
;   }<BR>   }else {<BR>   &n=
bsp;$_SESSION['noinfo']=3D" <span class=3D'greysmaller'>NO DATA AVA=
ILABLE</span>";<BR>    //break;<BR>  =
 }<BR>  }<BR>  <BR>  $min_x =3D $min_x=
-$distancia;<BR>  $max_x =3D $max_x+$distancia;<BR>  =
$min_y =3D $min_y- $distancia;<BR>  $max_y=3D$max_y+$distancia;=
<BR>  <BR>  $_SESSION["miMap"]->setextent($min_x,$=
min_y,$max_x,$max_y);<BR>  $_SESSION['noinfo']=3D"";<BR> }=
else{<BR>  $_SESSION['noinfo']=3D" <span class=3D'greysmalle=
r'>NO DATA AVAILABLE</span>";<BR> }<BR> $_SESSION['map=
_extent']=3D $_SESSION["miMap"]->extent->minx." ".$_SESSION["miMap"=
]->extent->miny." "<BR> .$_SESSION["miMap"]->extent->max=
x." ".$_SESSION["miMap"]->extent->maxy;<BR> <BR>}<BR></DIV>
<DIV>Sorry for my english, hope you use it.</DIV>
<DIV> </DIV>
<DIV>Regards,</DIV>
<DIV> </DIV>
<DIV>  </DIV>
<DIV><FONT face=3DVerdana size=3D1>Marcelo Ismael Carrillo Est=E9vez</FON=
T></DIV>
<DIV><FONT face=3DVerdana size=3D1>BAYTEQ C=EDa. Ltda.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D1>09-8813885</FONT><FONT face=3DVerdana =
size=3D1></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D1>"There's no place like 127.0.0.1"</FON=
T></DIV>
<DIV id=3DIncrediOriginalMessage><I>-------Mensaje original-------</I></D=
IV>
<DIV> </DIV>
<DIV id=3Dreceivestrings>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>De:</B></I> <A href=3D"mai=
lto:mapserver at lparchaeology.com">mapserver at lparchaeology.com</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Fecha:</B></I> 26/07/2004 =
8:39:21</DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Para:</B></I> <A href=3D"m=
ailto:mapserver-users at lists.gis.umn.edu">Mapserver Users</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Asunto:</B></I> [Mapserver=
-users] Center map on feature?</DIV></DIV>
<DIV> </DIV>
<DIV>I would like to ask the list for any ideas about how I can centre a =
map</DIV>
<DIV>on a specific site/feature.</DIV>
<DIV> </DIV>
<DIV>We currently link from a site result page (generated from a database=
) to</DIV>
<DIV>a map search page by grabbing the X,Y UTM zone 33 values for the sit=
e</DIV>
<DIV>that we hold in the database. e.g. reference map  link on =
page:</DIV>
<DIV> </DIV>
<DIV><A href=3D"http://www.fastionline.org/php/content.php?item=3D4&s=
ite_id=3D80&lang=3Dit">http://www.fastionline.org/php/content.php?ite=
m=3D4&site_id=3D80&lang=3Dit</A></DIV>
<DIV> </DIV>
<DIV>will take you to the main map page centred on the site.</DIV>
<DIV> </DIV>
<DIV>However, we have recently begun to add sites that are in UTM zone 32=
=2E We</DIV>
<DIV>project all this very neatly using mapserver. However, we need to th=
ink</DIV>
<DIV>of a new way to link back from a single site to the main map centred=
 on</DIV>
<DIV>the site.</DIV>
<DIV> </DIV>
<DIV>Any suggestions would be very welcome. Every site has a unique id wh=
ich</DIV>
<DIV>is also present in our shapefile.</DIV>
<DIV> </DIV>
<DIV>Many thanks,</DIV>
<DIV> </DIV>
<DIV>Guy</DIV>
<DIV> </DIV>
<DIV>--</DIV>
<DIV>Guy Hunt</DIV>
<DIV> </DIV>
<DIV>L - P : Archaeology</DIV>
<DIV><A href=3D"http://www.lparchaeology.com">www.lparchaeology.com</A></=
DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>--</DIV>
<DIV>Guy Hunt</DIV>
<DIV> </DIV>
<DIV>L - P : Archaeology</DIV>
<DIV><A href=3D"http://www.lparchaeology.com">www.lparchaeology.com</A></=
DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>_______________________________________________</DIV>
<DIV>Mapserver-users mailing list</DIV>
<DIV><A href=3D"mailto:Mapserver-users at lists.gis.umn.edu">Mapserver-users=
@lists.gis.umn.edu</A></DIV>
<DIV><A href=3D"http://lists.gis.umn.edu/mailman/listinfo/mapserver-users=
">http://lists.gis.umn.edu/mailman/listinfo/mapserver-users</A></DIV></TD=
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