On 11/29/2011 3:20 AM, Daniele Debernardi wrote:
Hi,
with mapserver trunk version (but i think with others too) I have to
generate very big map to be imported in a pdf file.
I use php mapscript to generate maps with 300 dpi for an A1/A0 pdf page
or bigger.
This mean that the map has dimensions like 15000x25000 pxl and when I
call the MapObj->draw method i get this error:
PHP Warning: mapObj::draw(): [MapServer Error]: agg2CreateImage():
mapagg.cpp: 708: Out of memory allocating 1550851152 bytes.
Map server is configured with the AGG/PNG driver with imagemode RGBA.
Is it normal that need so much memory to generate the image?
Just for the image buffer you need 15000x25000x4 pixels = 1500,000,000
and AGG might actually allocate a slight larger image buffer so it does
not create edge effects while antialiasing objects close to the edges.
So the above request does not seem unreasonable.
I already tryied the php ini_set memory_limit but with a limit of 2048M
i still have some problem with memory.
Try setting the limit a little higher like to 2564-3072M can see if your
memory problems go away. Of course this assumes you have a system with a
lot of memory.
-Steve W
I checked other possible outputs but generating maps in pdf through
Cairo driver but doc says that polygons filled with symbols are not
supported, and for that reason I cant use it.
SVG output has some limitations too like line drawn without symbols or
pixmap symbols not supported.
Is there a better way to generate so big map images and imported in a
pdf file?
Hope you guys can help me.
Daniele
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