Hello,
I've tried to get mapserver up and running with GDAL to display a raster
image from a php webpage but have been largely unsuccessful. This post will
be relatively long as I describe all that I've tried to do to get it
working. My development platform is Fedora Core 6.
First I tried all the needed packages obtained from the Fedora
repositories. I ran in to issues with php and gd not cooperating. So I
downloaded php from and built from source (v5.2.1).
After php was installed and operational, I tried to get mapserver running (
v4.10.1). After I successfully built (with config options --without-pdf
--with-httpd=/usr/sbin/httpd --with-php=/usr/local/src/php-5.2.1 --with-proj
--with-gdal), I copied the php_mapscript.so file to the php modules
direcotry. I started receiving errors along the lines of no output format
for GTIFF ( I appologies for the vagueness, but I didn't write it down and I
don't remember what it specifically was).
Next, I downloaded from source GDAL and built it (with config options
--with-png --with-jpeg --with-gif --with-libtiff --with-hdf4 --with-hdf5
--with-jasper --with-mysql). Then I did a make install and rebuild
mapserver with the option --with-gdal=/usr/local/bin/gdal-config. I also
copied over the new php_mapscript. At this point, I am still unable to draw
a singular raster image with mapserver. My exact error message is:
*Warning*: [MapServer Error]: msDrawMap(): Failed to draw layer named
'TestLayer'. in */var/www/html/ryan/test.php* on line *9*
*Warning*: [MapServer Error]: msDrawRaster(): (/usr/share/images/test.png)
in */var/www/html/ryan/test.php* on line *9*
I've tried an older version of GDAL (1.4.0) with the same results. gdalinfo
correctly opens and displays info on my image file, resolution and type
(png).
Here is my php file:
<?php
$map_path="/var/www/html/ryan/map/";
dl('php_mapscript.so');
$map = ms_newMapObj($map_path."test.map");
//$map->selectOutputFormat("image/png");
$image=$map->draw();
$image_url=$image->saveWebImage();
?>
<HTML>
<HEAD>
<TITLE>Test</TITLE>
</HEAD>
<BODY>
<IMG SRC=<?php echo $image_url; ?> >
</BODY>
</HTML>
and here is my mapfile:
Map
Name TESTMAPFILE
Status On
Imagetype PNG
Size 800 600
Extent -82 40 -80 42 #example location
Units dd
Web
Imagepath "/var/www/html/ryan/map/"
Imageurl "/ryan/map/"
End
Layer
Name "TestLayer"
Type Raster
Status On
Data "/usr/share/images/test.png"
End
OutputFormat
Name png
Driver "GD/PNG"
Mimetype "image/png"
ImageMode RGB
Extension "png"
End
End
I am at the end of my rope trying to get this to work. If anyone can
provide any direction, I would greatly appreciate any insight.
Thanks,
Ryan
