Frank,
I have increased the cache as you suggested using GDALSetCacheMax
and it produced a performance gain. Thanks.
I think I can improve more acting on the virtual datataset that I use to
adapt the image to the paper size.
I have to look into the tms driver in order to understand how it
El 11/06/2010 11:04, Stefano Moratto escribió:
I evaluated the use of mapnik but I develop on Windows and [...] The
deployment term in near so I have no time to try the direct use of
mapnik.
OK, if you evaluated using Mapnik, then I said nothing :-)
Have you experience of mapnik on windows?
Frank,
The source images are a sequence of tiles from openstreetmaps.
Every tiles has a fixed size (256 x 256) and the area they covers depends
from the zoom level.
It is explained very well in
http://www.maptiler.org/google-maps-coordinates-tile-bounds-projection.
I use interpolation (vi
Iván,
I evaluated the use of mapnik but I develop on Windows and setup it on that
platform is not easy as on Unix/Linux. Also I develop in delphi, so I have
do create the bindings by myself
I would like to use mapnik in my project as a replacement of my custom
render but I have to transform th
El día Thursday 10 June 2010 09:49:01, Stefano Moratto dijo:
> I use GDAL to download tiles (jpeg) from OpenstreetMap and to compose a
> bitmap of the area that is being viewed. The resulting bitmap (not
> compressed) is warped and displayed.
Hhhhmmm. Personally, I think you're doing it wrong.
I
Stefano Moratto wrote:
The performances are quite acceptable but when I try to print they are not.
The drawing to be printed has a resolution larger of the screen (Screen
: 1024x1024, Printer 4096 x 4094 in A4 and 9000 x 9000 in A3 approximately).
I think tha the bottleneck could be found in:
I'm on a Mac, so I normally use Shark for profiling. It's included
with Apple's developer tools.
I would definitely try running outside of a virtual machine
environment. That might be your problem, but you won't know until you
try.
~Seth
On Jun 10, 2010, at 2:46 AM, stefano.mora...@gmail
I'm working on a VirtualMachine running on an usb hdd and my customer use
iMac laptop so I can't change disk.
The primary dataset is composed by a lot of jpeg download from internet and
then cached to disk.
I think the performance slowdown is caused after the creation of the
virtual dataset
>1) hw accelerated functions as IPP or GPU (e.g CUDA)
This is my (ongoing) Google Summer of Code project, except I'm using
OpenCL. :D
What resampling algorithm are you using?
~Seth
On Thu, June 10, 2010 1:49 am, Stefano Moratto wrote:
> I use GDAL in my traffic optimization CAD program.
> It is
I use GDAL in my traffic optimization CAD program.
It is a Win32 application written in DELPHI that uses GDAL "C" API - the
binding was autogenerated by my SWIG module for object pascal.
I use GDAL to download tiles (jpeg) from OpenstreetMap and to compose a
bitmap of the area that is being viewed
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