[GRASSLIST:7763] Re: Georeferenced Tiff
atif at lynxseismicdata.com
Tue Aug 2 10:58:28 EDT 2005
Hello Ian, I have double checked. Yes I am sure as per your suggestion below.
However, I ran into something that is somewhat bewildering.
I re-ran i.rectify (for the third time), with no changes. It worked! But I did
notice something different. The second time I ran i.rectify, the resultant
raster, 2249-1.rect had nsres=24.78703534 and ewres=19.72263337
The third time I ran i.rectify, the resultant rast 2249-1.rect1 had
nsres=6.39700489 and ewres=6.4316374
I am somewhat certain that I did not change any parameters in i.rectify when I
ran it the second and third time.
Did I miss something?
On Sunday 31 July 2005 15:35, Ian MacMillan wrote:
> Atif, I am not sure about this, but are you sure that when you
> rectified the image, you were doing it so that the image would show up
> in the region of interest? In other words, are you sure your original
> raster will show up in the region you specified using i.rectify? Just
> a thought.
> On Jul 31, 2005, at 10:47 AM, Atif Rajan wrote:
> > Dear reader,
> > I ran i.rectify but am unable to veiw the result.
> > After setting the region, g.region rast=XXX, and d.rast XXX, the
> > rectified
> > raster will not display. Also, when I view it using an image viewer,
> > the
> > entire screen is black.
> > What am I doing wrong?
> > Thank you.
> > Atif
> > On Friday 15 July 2005 01:57, Markus Neteler wrote:
> >> On Thu, Jul 14, 2005 at 05:38:41PM -0600, Atif Rajan wrote:
> >>> Dear Reader,
> >>> As a new user of GRASS 6.0, I am having difficulty converting an
> >>> imported
> >>> rastermap ( 700.tif) into a geo-referenced raster.
> >>> I have followed the sequence of i.group, i.target and i.points
> >>> (where I
> >>> have input 6 points with UTM coordinates)
> >>> What do I need to do from here?
> >> The final step is to run i.rectify in the source location.
> >> Markus
> > -------------------------------------------------------
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