Guys,
you are incredible! It works really well and fast.
Furthermore, I don't know if you did something, but ecw drawing is
instantaneous now. I have never seen that on any GIS!
Thanks a lot
Cheers
Régis
--
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On Wed, Aug 22, 2012 at 8:34 PM, Even Rouault
even.roua...@mines-paris.org wrote:
I suppose your workaround in QGIS will be to read 1x2 pixel or something
like that.
Yes, I have used 2x2.
Hum, I humbly suggest that the fix should be done in the ECW driver rather
than
in QGIS. The issue
On Thu, Aug 23, 2012 at 10:41 AM, haubourg
regis.haubo...@eau-adour-garonne.fr wrote:
Guys,
you are incredible! It works really well and fast.
Furthermore, I don't know if you did something, but ecw drawing is
instantaneous now. I have never seen that on any GIS!
On Wed, Aug 22, 2012 at
Until it get fixed in GDAL we can use
if ( GDALGetDriverShortName() == ECW)
and once you fix that
#if defined(GDAL_VERSION_NUM) GDAL_VERSION_NUM x.x
if ( GDALGetDriverShortName() == ECW)
Seems reasonnable. Except I suggest using a string comparison function and not
== ;-)
Hi all,
I'm ready to support developpement now, so let's undig a topic discussed
previously here:
http://hub.qgis.org/issues/4594 http://hub.qgis.org/issues/4594
Identify for very large ecw (from 1 to 100 Go - 1 080 000 * 1 090 000
pixels) is extremely long (more than 1min) and results to
On Wed, Aug 22, 2012 at 11:40 AM, haubourg
regis.haubo...@eau-adour-garonne.fr wrote:
Hi all,
I'm ready to support developpement now, so let's undig a topic discussed
previously here:
http://hub.qgis.org/issues/4594 http://hub.qgis.org/issues/4594
Identify for very large ecw (from 1 to 100
Radim Blazek-2 wrote
QGIS is using GDALRasterIO() which reads a single pixel on original
resolution. AFAIK, ECW is using tiles internally so it should be all
very fast. I can imagine 2 problems:
- the tiles in ECW file are too big - can you verify somehow how big
are the tiles?
Hi
On Wed, Aug 22, 2012 at 12:29 PM, haubourg
regis.haubo...@eau-adour-garonne.fr wrote:
Radim Blazek-2 wrote
QGIS is using GDALRasterIO() which reads a single pixel on original
resolution. AFAIK, ECW is using tiles internally so it should be all
very fast. I can imagine 2 problems:
- the
Selon Radim Blazek radim.bla...@gmail.com:
On Wed, Aug 22, 2012 at 12:29 PM, haubourg
regis.haubo...@eau-adour-garonne.fr wrote:
Radim Blazek-2 wrote
QGIS is using GDALRasterIO() which reads a single pixel on original
resolution. AFAIK, ECW is using tiles internally so it should be
Even,
thanks for exhaustive explanation and testing.
On Wed, Aug 22, 2012 at 2:37 PM, Even Rouault
even.roua...@mines-paris.org wrote:
I found in GDAL ecwdataset.cpp that it is treating single row
requests in IRasterIO in a special way:
I tried the following Python script that must be
On Wed, Aug 22, 2012 at 3:25 PM, haubourg regis.haubourg@eau-adour- Radim,
I'll try to to check if tiles are present, but I don't think so. We
compressed it with ERmapper without tile option.
No more important, we know already the problem.
I'm afraid I'm not yet able to test patches since I
Le mercredi 22 août 2012 20:13:39, Radim Blazek a écrit :
Even,
thanks for exhaustive explanation and testing.
On Wed, Aug 22, 2012 at 2:37 PM, Even Rouault
even.roua...@mines-paris.org wrote:
I found in GDAL ecwdataset.cpp that it is treating single row
requests in IRasterIO in a
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