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 memor
On Wed, Aug 22, 2012 at 11:40 AM, haubourg
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 Go - 1 080 000 * 1 090 000
> pi
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?
On Wed, Aug 22, 2012 at 12:29 PM, haubourg
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 tiles in ECW file are
Selon Radim Blazek :
> On Wed, Aug 22, 2012 at 12:29 PM, haubourg
> 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 prob
Hi,
in the documentation, at the QgsProject entry, I read this:
boolread (QFileInfo const &file)
read project file
boolread ()
presuming that the caller has already reset the map canvas, map
registry, and legend
the first read (QFileInfo const &file) sets the project
Even Rouault wrote
>
> Selon Radim Blazek :
>
> Regis,
>
> what are the dimensions (in pixels) of your big ECW ?
>
My ecw is 1 080 000 * 1 090 000 pixels (IGN orthophotos for 28 French
departement.. 1/4 of France surface)
but I have also problem with scan25 and scan 100 that ar
Hi,
does anybody know why raster no data value is automatically added to
transparency list in properties dialog? It makes no sense IMO. No data
values are always rendered as transparent, no need to define them also
in transparent list.
Radim
___
Qgis-dev
It isn't the only odd thing/bug with nulls and transparency. For example
not always nulls are rendered transparent and when you try to add them to
the transparency list the entry is added as 0 instead.
On Aug 22, 2012 4:49 PM, "Radim Blazek" wrote:
>
> Hi,
> does anybody know why raster no data v
I've seen nodata with huge float32 values. Unfortunately they are rendered
in qgis and I can not make them transparent by adding the value to the
transparency list.
On Aug 22, 2012 8:56 AM, "Giovanni Manghi"
wrote:
> It isn't the only odd thing/bug with nulls and transparency. For example
> not
On Wed, Aug 22, 2012 at 1:11 PM, Bob and Deb wrote:
> I've seen nodata with huge float32 values. Unfortunately they are rendered
> in qgis and I can not make them transparent by adding the value to the
> transparency list.
that's because gdal provider chooses a nodata value that is out of the
ra
Even,
thanks for exhaustive explanation and testing.
On Wed, Aug 22, 2012 at 2:37 PM, Even Rouault
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 representative of how QGIS
>
On Wed, Aug 22, 2012 at 3:25 PM, haubourg 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 never compiled QGIS and
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
>
> wrote:
> >> I found in GDAL ecwdataset.cpp that it is treating single row
> >
> >> requests in IRasterIO in a special way:
>
Hi Larry, Nathan
On Tue, Aug 21, 2012 at 9:58 PM, Larry Shaffer wrote:
> For a cleaner look for the message bar, I created two svg icons output to
> png, one for the warning and one for close [0]. Also, the Enable action is
> more of a link. Basically, removing the tool button backgrounds via a
>
Hi all,
I noticed that the alpha value stored in the QML for
QgsSimpleFillSymbolLayer objects is wrong.
Here's the QML generated when the symbol transparency is 70%:
...
The alpha value for the whole symbol is right (~0.30), instead the
layer's
Hi Giuseppe,
On Wed, Aug 22, 2012 at 4:58 PM, Giuseppe Sucameli wrote:
> Hi Larry, Nathan
>
> On Tue, Aug 21, 2012 at 9:58 PM, Larry Shaffer wrote:
>> For a cleaner look for the message bar, I created two svg icons output to
>> png, one for the warning and one for close [0]. Also, the Enable act
Hi Radim
Nodata should be rendered transparent in most cases. But it could also
be possible you want to render it differently. E.g. the interpolation
plugin writes nodata value in case it encounters numerical problems.
Then it is useful to have the nodata values coloured to see where
problems
18 matches
Mail list logo