[Mapserver-users] map positioning -- help needed

Thu Nov 6 06:12:34 EST 2003

Thank you:)
This looked a lot simple, so I tried to implement it into my code, just
trying "north". However it gave an error. Since I am a mapserver/mapscript
newbei, I could not understand the problem. Can you tell me what's wrong
here? Please. I am desperate....

Error:

Fatal error: zoomPoint failed : incorrect parameters in
/var/www/html/mapserver/itasca/map_move_try.php on line 119

current php-code:

<HEAD>
<TITLE>MEGATEK</TITLE>
</HEAD>
<CENTER>
<FORM METHOD=POST ACTION=<?php echo $PHP_SELF?>>
<H1>TEST SERVER</H1>
<IMG SRC="yeni_ust.gif">
<P>
<?php
dl("php_mapscript.so");

mysql_connect("213.74.112.162","root","sqlpass") or
        die ("Could not connect to database");

mysql_select_db("gpstrack") or
        die("Could not select database");

$val_zsize=3;
file://$check_pan="CHECKED";
$pandir = 0;

$shpFname = "target1";
$shpFile = ms_newShapeFileObj($shpFname, MS_SHP_POINT);

$shpFname1 = "target2";
$shpFile1 = ms_newShapeFileObj($shpFname1, MS_SHP_POINT);

$pt = ms_newPointObj();

$i = 0;

$result = mysql_query("select * from track3") or
        die (mysql_error());

$x[0]=0;
$y[0]=0;

while ($row = mysql_fetch_array($result))
{
++$i;
$test_x[$i] = $row["lodegrees"]+$row["lominutes"]/60;
$test_y[$i] = $row["ldegrees"]+$row["lminutes"]/60;
file://echo $row["lominutes"];
file://echo "<br>\n";

if($test_x[$i]==$x[$i-1] || $test_y[$i]==$y[$i-1])
{
--$i;
}else
{

$x[$i] = $test_x[$i];
$y[$i] = $test_y[$i];

}

}
mysql_free_result($result);

for($k=1;$k<=$i-1;++$k)
{
$pt->setXY($x[$k], $y[$k]);
$shpFile->addPoint($pt);
};

$pt->setXY($x[$i], $y[$i]);
$shpFile1->addPoint($pt);

$shpFile->free();
$shpFile1->free();

$def =array(array("UNIQID", "C", 13),array("NOM", "C", 128));
$dbfFile = dbase_create($shpFname.".dbf", $def);
dbase_add_record($dbfFile, array("1","TEST"));

$def =array(array("UNIQID", "C", 13),array("NOM", "C", 128));
$dbfFile = dbase_create($shpFname1.".dbf", $def);
dbase_add_record($dbfFile, array("1","TEST"));

$myMap = ms_newMapObj("demo_try.map");

#$myLayer = $myMap->getLayerByName("target1");
#$myLayer->set("data", $shpFname);
#$myLayer->set('status', MS_ON);

$direction = $HTTP_POST_VARS["pandir"];

$my_point = ms_newpointObj();

if($direction!=0)
{
if($direction == 1) {

$pansize = .50;
$a = 0;
$b = 0;
$width = $myMap->width;
$height = $myMap->height;
$a = ($width-1)/2.0;
$b = 0 - ($height * $pansize)/2.0;
     }
$zoom_factor = 0;
$my_point->setXY($a, $b);
$extent_to_set[0] = 29.057;
$extent_to_set[1] = 40.954;
$extent_to_set[2] = 29.143;
$extent_to_set[3] = 40.999;
$my_extent = ms_newrectObj();
$my_extent->setextent($extent_to_set[0],$extent_to_set[1],
                              $extent_to_set[2],$extent_to_set[3]);
$myMap->zoompoint($zoom_factor,$my_point,$myMap->width,$myMap->height,
                 $my_extent);

}elseif ( isset($HTTP_POST_VARS["mapa_x"]) &&
isset($HTTP_POST_VARS["mapa_y"])
      && !isset($HTTP_POST_VARS["full"]) ) {

 //     $extent_to_set = explode(" ",$HTTP_POST_VARS["extent"]);

$extent_to_set[0] = 29.057;
$extent_to_set[1] = 40.954;
$extent_to_set[2] = 29.143;
$extent_to_set[3] = 40.999;

  $myMap->setextent($extent_to_set[0],$extent_to_set[1],
                     $extent_to_set[2],$extent_to_set[3]);

      $my_point->setXY($HTTP_POST_VARS["mapa_x"],$HTTP_POST_VARS["mapa_y"]);

      $my_extent = ms_newrectObj();

      $my_extent->setextent($extent_to_set[0],$extent_to_set[1],
                              $extent_to_set[2],$extent_to_set[3]);

      $zoom_factor = $HTTP_POST_VARS["zoom"]*$HTTP_POST_VARS["zsize"];
      if ($zoom_factor == 0) {
              $zoom_factor = 1;
              $check_pan = "CHECKED";
              $check_zout = "";
              $check_zin = "";
      } else if ($zoom_factor < 0) {
              $check_pan = "";
              $check_zout = "CHECKED";
              $check_zin = "";
      } else {
              $check_pan = "";
              $check_zout = "";
              $check_zin = "CHECKED";
      }

      $val_zsize = abs($zoom_factor);

      $myMap->zoompoint($zoom_factor,$my_point,$myMap->width,$myMap->height,
                      $my_extent);

}
$img = $myMap->draw();
$image_url = $img->saveWebImage(GIF,1,1,0);

?>
<BODY>
<center>
<table border=0 cellspacing=0 cellpadding=4 bgcolor="#FFFFFF">
<tr>
<td valign="top" align=center>
  <table cellpadding="0" cellspacing="5" border="5">
    <tr><td colspan="2"><INPUT NAME="mapa" TYPE="image" SRC="<?php echo
$image_url; ?>" width=600 height=600 border=0></td></tr>
    <tr>
 <TR>
      <TD>
              Pan
      </TD>
      <TD>
              <INPUT TYPE=RADIO NAME="zoom" VALUE=0 <?php echo $check_pan?>>
      </TD>
 </TR>
 <TR>
      <TD>
              Zoom In
      </TD>
      <TD>
              <INPUT TYPE=RADIO NAME="zoom" VALUE=1 <?php echo $check_zin?>>
      </TD>
 </TR>
 <TR>
      <TD>
              Zoom Out
      </TD>
      <TD>
              <INPUT TYPE=RADIO NAME="zoom" VALUE=-1 <?php echo
$check_zout?>>
      </TD>
 </TR>
 <TR>
      <TD>
              Zoom Size
      </TD>
      <TD>
              <INPUT TYPE=TEXT NAME="zsize" VALUE="<?php echo $val_zsize?>"
              SIZE=2>
      </TD>
 </TR>
<TR>
      <TD>
              NULL
      </TD>
      <TD>
              <INPUT TYPE=RADIO NAME="pandir" VALUE=0  >
      </TD>
 </TR>
<TR>
      <TD>
              North
      </TD>
      <TD>
              <INPUT TYPE=RADIO NAME="pandir" VALUE=1 >
      </TD>
 </TR>
 <TR>
      <TD>
              Full Extent
      </TD>
      <TD>
              <INPUT TYPE=SUBMIT NAME="full" VALUE="Go"
              SIZE=2>
      </TD>
</TABLE>
<INPUT TYPE=HIDDEN NAME="extent" VALUE="<?php echo $extent_to_html?>">
</FORM>
</CENTER>

</BODY>
</HTML>

Have a nice day

Murat Isik