Hi Frank and friends,
Just to wrap this one up - we actually ended up receiving a geocoded
image and I used gdal_translate to assign EPSG:27700 (the image was
missing the coord sys declaration - this seems to be the case with a
few image providers I've noticed):
gdal_translate -a_srs EPSG
On 8/16/08, Christopher Hunt <[EMAIL PROTECTED]> wrote:
> Hopefully one last question on this though: the a_ullr parameters - given
> the a_srs spec of EPSG:27700, are the a_ullr parameters expected to be in
> BNG coordinates i.e. eastings and northings values? Asking this another way,
> what actu
Thanks for your reply Frank.
On 16/08/2008, at 2:05 PM, Frank Warmerdam wrote:
I believe EPSG:27700 is British National Grid which is a projected
coordinate system based on the OSGB 1936 datum. So you should
ensure the provider means the dataset is actually in BNG, in addition
to being based o
On Fri, Aug 15, 2008 at 8:41 AM, Christopher Hunt
<[EMAIL PROTECTED]> wrote:
> Hi again Frank et. al,
>
> I've made some progress. The aerial image provider now tells me that it is
> projected as OSGB 1936 which I believe is EPSG:27700. Thus if I use a
> command like:
>
> gdal_translate -a_srs EPSG
Hi again Frank et. al,
I've made some progress. The aerial image provider now tells me that
it is projected as OSGB 1936 which I believe is EPSG:27700. Thus if I
use a command like:
gdal_translate -a_srs EPSG:27700 -a_ullr
then I should be able to create my GeoTIFF.
Unfortunately the
On Fri, Aug 1, 2008 at 8:02 AM, Frank Warmerdam <[EMAIL PROTECTED]> wrote:
> Christopher Hunt wrote:
>>
>> Hi Frank et. al,
>>
>> Sorry to be a pest. I've been trying tons of things, trawling tons of
>> search results, and I'm really no better off than I was a few days ago. :-P
>>
>> In summary I h
Christopher Hunt wrote:
Hi Frank et. al,
Sorry to be a pest. I've been trying tons of things, trawling tons of
search results, and I'm really no better off than I was a few days ago. :-P
In summary I have an aerial photo image of an airport with three well
known points (expressed in lat/long
Hi Frank et. al,
Sorry to be a pest. I've been trying tons of things, trawling tons of
search results, and I'm really no better off than I was a few days
ago. :-P
In summary I have an aerial photo image of an airport with three well
known points (expressed in lat/longs). I'm wanting the i
On 30/07/2008, at 9:07 AM, Frank Warmerdam wrote:
Christopher Hunt wrote:
Hi Frank,
Thanks for the reply and for the confirmation that I'm on the right
track.
Dumb newbie question: wouldn't most aerial photos taken, say, from
12,000ft be ortho in their projection?
Christopher,
I don't th
Christopher Hunt wrote:
Hi Frank,
Thanks for the reply and for the confirmation that I'm on the right track.
Dumb newbie question: wouldn't most aerial photos taken, say, from
12,000ft be ortho in their projection?
Christopher,
I don't think that is a good assumption at all. And if you wer
Hi Frank,
Thanks for the reply and for the confirmation that I'm on the right
track.
Dumb newbie question: wouldn't most aerial photos taken, say, from
12,000ft be ortho in their projection?
Cheers,
-C
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Christopher Hunt wrote:
Hi there,
Being new to gdal I'm hoping that someone can help me by verifying my
gdal_translate command. Thanks in advance.
I have an aerial photo of an airport which I therefore assume is
orthographic. Three points have been provided to me which I am assuming
to be w
Hi there,
Being new to gdal I'm hoping that someone can help me by verifying my
gdal_translate command. Thanks in advance.
I have an aerial photo of an airport which I therefore assume is
orthographic. Three points have been provided to me which I am
assuming to be wgs84:
point1 = -0.49
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