On Fri, Jul 24, 2009 at 09:09:27AM -0700, Matt Wilkie wrote:
>
> Now back to GDAL and related projects: does the fact that there is no proj4
> NAD83(CSRS) datum parameter mean the X-to-NAD83(CSRS) transformation is not
> happening?
>
AFAIK for Canada you can download the freely available NTv2 f
2009/7/23 Mateusz Loskot :
> Jorge ArĂŠvalo wrote:
>> 2009/7/23 Mateusz Loskot :
>>> Jorge Ar�Švalo wrote::
Hello,
Context: GDAL WKT Raster Driver
While creating the Dataset, I execute this query:
SELECT srid, ST_AsText(extent), pixelsize_x, pixelsize_y, blocksi
> I suspect EPSG does not define a NAD83(CSRS) datum
> because it needs a dynamic reference frame definition,
> which cannot be approximated decently with a seven parameters
> transformation, anyway. So it would be not a proper approach.
For clarity, EPSG does define a NAD83(CSRS) datum, it's
> Is there a difference between NAD83 and NAD83 CSRS ?
> (the difference between NAD83/GRS80 and WGS84/WGS84
> is usually neglectable).
I have been operating on the presumption there must be _some_ kind of
important difference else they wouldn't have gone through the bother of
formulating and es
Rainer M Krug wrote:
Hi
I have a geotiff and want to use gdalwarp to warp to it into a
different projection.
I do the following:
gdalwarp -s_srs EPSG:32734 -t_srs '+proj=longlat +ellps=WGS84
+no_defs' Outeniqua.tiff Outeniqua_wgs84.tiff
The problem is, that in Outeniqua_wgs84.tiff, the nodata
chen xiaodong wrote:
On our company's platform ,we use gdal to read/write geo raster
files.There is a problem I acount with is that when process a little
larger file beyond 1G ,the performance is poor that a file with a 1.5G
compacity and tiff format resampling can consume more then 20 minutes
On Thu, Jul 23, 2009 at 10:13:42AM -0700, Matt Wilkie wrote:
>
> I came across this curiosity while trying to figure out what the
> equivalent proj4 parameters were to epsg:3579. Using
> "+datum=nad83(csrs)" and combinations thereof result in
> "datum_unknown" being written to the .prj file.
> ((i
Francesco P. Lovergine wrote:
On Thu, Jul 23, 2009 at 09:12:01PM -0400, Frank Warmerdam wrote:
Enrico,
I concur with Dave. The best place to get the latest libtiff4 with
bigtiff support is CVS. Please note that the Aperio code is a distinct
fork of libtiff and not supported or encouraged for
On Thu, Jul 23, 2009 at 09:12:01PM -0400, Frank Warmerdam wrote:
>
> Enrico,
>
> I concur with Dave. The best place to get the latest libtiff4 with
> bigtiff support is CVS. Please note that the Aperio code is a distinct
> fork of libtiff and not supported or encouraged for use by the core
> li
> 2009/7/24 spbhasker bachi :
> Need help on 4th , 5th , 6th upto 10 Order Polynomials.
>
> I have succesfully used the 1st to 3rd Polynomials provided in GDAL and
> warped both Vectors and Images based on custom Coding..
>
> Can anyone help me Code the 4th to 10th Order
You probably don't want to
Hi,
I am trying to reproject Slovenian country data from D48 (WKT attached)
and Italian ISTAT national vector data (UTM32/ED50) into a common
projection.
While the map "attach" rather well in Latlong/WGS84 using GDAL 1.6.svn,
they don't in EU LAEA (EPSG 3035). This is a bit suprising for me.
Any
Hi.
Need help on 4th , 5th , 6th upto 10 Order Polynomials.
I have succesfully used the 1st to 3rd Polynomials provided in GDAL and
warped both Vectors and Images based on custom Coding..
Can anyone help me Code the 4th to 10th Order
Any source from any website which will help me out is welcom
Hi
I have a geotiff and want to use gdalwarp to warp to it into a
different projection.
I do the following:
gdalwarp -s_srs EPSG:32734 -t_srs '+proj=longlat +ellps=WGS84
+no_defs' Outeniqua.tiff Outeniqua_wgs84.tiff
The problem is, that in Outeniqua_wgs84.tiff, the nodata values from
Outeniqua.t
Hi Frank and David,
thank you very much for your informations.
As you've correctly told, my searches on Google lead me thinking that the
Aperio distribution was the right side to get BIGTiff libraries.
Now everything is clear to me, thanks for your clarification!
Best regards,
On Fri, Jul 24, 20
Hi,
please read:
http://gdal.org/frmt_georaster.html
Best regards,
Bart
> hello.
>
> i have dumped few images using the georaster plugin build on gdal 1.6.1
>
> pl let me know the syntax to extract the images from georaster
>
> presume gdal_translate has some functionality.. can anyone let me k
hello.
i have dumped few images using the georaster plugin build on gdal 1.6.1
pl let me know the syntax to extract the images from georaster
presume gdal_translate has some functionality.. can anyone let me know the
syntax to clip the image from oracle database and write to an output tiff
image
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