Jason,
as a heavy ArcGIS user and teacher, as well as GDAL, I think you may have
missed something about ArcGIS. I have not tested the *outputs* of statistics
calculations between GDAL and ArcGIS, however what you describe seems to be a
display default.
When any image is opened from di
On 10/21/2010 04:58 AM, Pinner, Luke wrote:
OGR doesn't raise an exception on attempting to open a non-existant
dataset even if ogr.UseExceptions() has been called, GDAL does though.
Is this intentional or a bug?
Luke,
It is a (bit annoying feature admittedly) feature. If none of the
avai
Thanks, as you say this doesn't really solve my problem but it is a useful
tool, as was SpaceEyes3D Viewer color-relief editor.
In exploring my problem I've written some Java code to interpolate shades
within a color_text_file. If you set up a color-text-file with color
differences at 1000 meter
OGR doesn't raise an exception on attempting to open a non-existant
dataset even if ogr.UseExceptions() has been called, GDAL does though.
Is this intentional or a bug?
GDAL version = 1.7.2
from osgeo import gdal,ogr
gdal.UseExceptions()
ogr.UseExceptions()
ds=ogr.Open('foo')
#No exception raised
thanks..I am almost there...I think I am making a simple usage typo?
gdalwarp without the option '-t_srs EPSG:4326' works OK.
But it doesnt work with the command written exactly as you have it
>
> gdalwarp -t_srs EPSG:4326 in.jpg out.jpg
>
>
After that command, I do not get anything processed (i
Matt,
Although I have not worked with multi-band HFA format, I have experimented
fairly extensively with single-band, GDAL-produced, HFA-format files in
ArcGIS 9.3.1 SP1. Maybe my experience will be interesting to you anyway.
My experience was that calculating the statistics with GDAL and w
Matt out of curiosity is this a new install of ArcGIS you're talking
about, maybe version 9.2? As I recall installs of 9.2 require a
service pack to calc raster stats. Otherwise, rasters show all black
when loaded, etc.
Elijah,
VillaGIS, Inc.,
Branson, MO
Matt Hanneman wrote:
Hi,
C
Hi,
Can anyone help a newbie? I have been trying to calculate statistics
with gdal_merge when merging/stacking several tiffs together into a HFA
format (see below for syntax). However, when loaded into ArcGIS it
reports that there are no statistics calculated for any of the bands.
Will the '
Hey Even,
So I was messing around with one of the gdal examples that prints a lot of
debug info, which is nice. I found a thread where someone wanted to get
elevation data at a certain point or pixel. I think it was Frank who responded
to it. Anyway, I tried to follow along, and I think I'm
NEATLINE is only a concept of geospatial PDF encoded according to the OGC Best
Practice. Adobe-style have only bbox. That could be turned into a pseudo
neatline I guess.
Le mercredi 20 octobre 2010 19:26:36, Brent Fraser a écrit :
> Hmmm. My PDF doesn't seem to have a neatline, only a MediaBox
Hmmm. My PDF doesn't seem to have a neatline, only a MediaBox and two
BBoxes...
Brent
On 10/20/2010 9:04 AM, Even Rouault wrote:
You don't need to convince anyone to add new functionnality. It already exists
;-)
See the -cutline option of gdalwarp. Basically you use the NEATLINE reported by
The -ps parameter specifies the pixel width and pixel height of a
tile. You must multiply these values.
-ps 1000 1000
means 1000x1000 = 1 million pixels for each tile
As a consequence, a tile needs 1 MB .. n MB , depending on your color
model. The file size of the tiles my be smaller if co
Hi,
Why do you talk about million pixels?
I'm trying now with this command:
gdal_retile -of ECW -ps 1000 1000 -targetDir C:\GDAL\ECW Image.ecw
It's not finished yet, but there's so many tiles!!
I thought maybe using gdalbuildvrt, it could be a possibility.
--
View this message in context:
htt
You don't need to convince anyone to add new functionnality. It already exists
;-)
See the -cutline option of gdalwarp. Basically you use the NEATLINE reported by
gdalinfo as the CUTLINE (that was the sole purpose of reporting the NEATLINE by
the way !)
The easiest way is to make a simple CSV lik
The error does not occur in the gdal_retile.py python code, it occurs
in the gdal C code. Your tile size
is really large producing images with 100 millions of pixel. Try a
smaller pixel size, each pixel needs some bytes, dependent on your
color model.
Quoting Tacot :
Hi,
I try to cut
Boris,
Use gdalwarp to convert your jpeg to Geographic coordinates (I think
it needs to be converted for KML anyways):
gdalwarp -t_srs EPSG:4326 in.jpg out.jpg
then use gdalinfo to get the corner coordinates.
Currently the entire page of the PDF is rendered into the image.
Perhaps we ca
Hi,
I try to cut an image in several tiles.
I use this command:
gdal_retile -of ECW -ps 1 1 -targetDir C:\GDAL\ECW Image.ecw
I obtain 4 tiles, but after I've got this message:
"Traceback (most recent call last):
File "C:\PROGRA~1\FWTOOL~1.7\bin\gdal_retile.py", line 941, in ?
sys
My objective is to make a KML ground overlay with a geospatial PDF map.
Using GDAL's translate utility I have converted the PDF to a JPEG. The next
step and problem for me is to write the text of the KML ground overlay,
which requires a text of bounding box information like this:
37.9190
Sebastian E. Ovide wrote:
Hi All
I've save a ESRI binary grid using ArcMAP (in Binary format) and using
gdalinfo it looks like the RRD files are not read...
Sebastian,
Unfortunately, it is hard for me to figure out much without access to
the dataset. For a counter example, I'll provide a
Even,
You are completely right.
I was a bit confused by all the numbers in the package names ;)
I'm going the check my GML now.
Thanks,
Paul
2010/10/20 Even Rouault
> Paul,
>
> you can find GDAL 1.8dev binary packages on Tamas site. They are identified
> as
> the -dev releases.
>
> Selon Chai
Paul,
you can find GDAL 1.8dev binary packages on Tamas site. They are identified as
the -dev releases.
Selon Chaitanya kumar CH :
> Paul,
>
> 1.7 doesn't support some geometry types that 1.8 does. GDAL1.8 is yet to be
> released. You have to build it yourselves.
> You can find a nightly snapsho
On 10/20/2010 12:15 PM, Paul Meems wrote:
Hi all,
I have a GML which I want to convert to shapefile.
I've started with checking the file with ogrinfo (v1.7.2).
It returns "Unrecognised geometry type ."
After searching a bit it seems GDAL v1.8 might read the GML properly.
So I'm looking for the
Paul,
1.7 doesn't support some geometry types that 1.8 does. GDAL1.8 is yet to be
released. You have to build it yourselves.
You can find a nightly snapshot of the source code for the trunk (1.8) at
http://trac.osgeo.org/gdal/wiki/DownloadSource#NightlySnapshots
Build hints: http://trac.osgeo.org/
Hi all,
I have a GML which I want to convert to shapefile.
I've started with checking the file with ogrinfo (v1.7.2).
It returns "Unrecognised geometry type ."
After searching a bit it seems GDAL v1.8 might read the GML properly.
So I'm looking for the binaries of GDAL v1.8. At Tamas his site I c
Hi All
I've save a ESRI binary grid using ArcMAP (in Binary format) and using
gdalinfo it looks like the RRD files are not read...
any ideas ?
thanks
g...@mapserver:~$ gdalinfo data/ie/rasters/ie_t02_q200/
Driver: AIG/Arc/Info Binary Grid
Files: data/ie/rasters/ie_t02_q200/
data/ie/raste
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