OGR only supports the "+a=x +b=y" and "+a= +rf=z"
combinations. It could be extended to support more combinations, but those 2
ones are the most common to describe an ellipsoid. Patches welcome if your
needs go beyond that.
I don't think OCTProj4Normalize() strips the b paramet
steve.tout...@inspq.qc.ca wrote:
I finally got gdal_polygonize.py and tried it and generate a shapefile.
I might not use it as a solution for what I described below but I would
like to use it for other purpose.
My understanding is this function merge contiguous cells with the same
pixel value
Thanks Frank for your help, I think I'm further, but still not quite
there.
The definition requires me to send the iBandMap as an array, I cannot
insert the index of the band I wish to write, because then I'm just
passing an integer. So with that said, I decided to combine all my byte
arrays (buf
Dear list,
In python, I'm writing GeoTiff files from numpy arrays. I keep getting the
error:
AttributeError: 'MaskedArray' object has no attribute 'typecode'
Of which I cannot find any good description. Can anybody suggest a reason?
Thanks in advance for any advice, I've pasted my code below,
I finally got gdal_polygonize.py and tried it and generate a shapefile. I
might not use it as a solution for what I described below but I would like
to use it for other purpose.
My understanding is this function merge contiguous cells with the same
pixel value.
Can I use this function and speci
Henneke, Amanda M wrote:
...
This is what I have so far...
Dataset ds =
Gdal.Open("F:\\Mat_Class\\Alaska\\new_tifs\\class_ak_sheet_8a.tif",
Access.GA_Update);
Dataset ds_new =
drv.Create("F:\\Mat_Class\\Alaska\\new_tifs\\class_ak_sheet_8a_test.tif",
ds.RasterXSize, ds.RasterYSize, 5, DataTyp
steve.tout...@inspq.qc.ca wrote:
I might try this..is it the good way to do what I need?
1- Use gdal_polygonize.py to create a boundary (excluding pixels with no
value) of each image and save the boundary as a .shp
2- Somehow find the intersected region of the 2 polygons (boundaries)
created
I might try this..is it the good way to do what I need?
1- Use gdal_polygonize.py to create a boundary (excluding pixels with no
value) of each image and save the boundary as a .shp
2- Somehow find the intersected region of the 2 polygons (boundaries)
created above and save the result to .shp
3-
Hi,
I have 2 Erdas (.img) images that overlap. See attached image.
I need to clip one of the 2 images by removing the intersected (dark red)
part.
If it's possible, how should I accomplish this?
thanks for your help,
Steve
Steve Toutant, M. Sc.
Analyste en géomatique
Secteur environnement
2009/7/17 Tomas R
> Hi again
>
> Seems like I have solved the problem... the line
>
>> such as preprocessing the grid shift file into binary form.
>>
> gave me (finally) the hint I needed. Tried to compile Proj4 and the shift
> files but managed only compile the first part. Then I finally went fo
Hello all-
Using the C# gdal libraries, I'm trying to create a new raster dataset with 5
bands and then use the WriteRaster method to add data to each of those 5 bands.
This is what I have so far...
Dataset ds =
Gdal.Open("F:\\Mat_Class\\Alaska\\new_tifs\\class_ak_sheet_8a.tif",
Access.GA_Upd
Srikanth,
Srikanth wrote:
Peter ,
To be more specific, I want to store a ESRI shape file into the oracle
database. I would like to know whether gdal provides such a kind of
direct method where in if one passes the shape file name it gets
stored in the database handling the conversion of SDO_GEO
Nilesh,
Refer to the various links from http://www.gdal.org/ogr/
The datasource creation options are specific to each driver and often there
are no options and simply NULL is passed. You use them when the datasource
can be opened in different modes. I see that the current DGN driver supports
some
Srikanth,
The ogr2ogr utility might be of help to you.
Docs: http://gdal.org/ogr2ogr.html
Download: http://trac.osgeo.org/gdal/wiki/DownloadingGdalBinaries
On Fri, Jul 17, 2009 at 4:37 PM, Srikanth wrote:
> Peter ,
>
> To be more specific, I want to store a ESRI shape file into the oracle
> dat
Peter ,
To be more specific, I want to store a ESRI shape file into the oracle
database. I would like to know whether gdal provides such a kind of
direct method where in if one passes the shape file name it gets
stored in the database handling the conversion of SDO_GEOM type
internally.
I have go
Hi again
Seems like I have solved the problem... the line
such as preprocessing the grid shift file into binary form.
gave me (finally) the hint I needed. Tried to compile Proj4 and the
shift files but managed only compile the first part. Then I finally went
for the easy solution, I grabbed th
Ok. my bad perhaps.
Grabbed the shift-files from FWTools, and yes, now it works. It was,
not to soon, I noticed the line
such as preprocessing the grid shift file into binary form.
I realized I had probably missed a step. But how-to do that? No idea.
Try compiling Proj4, yes that works, but c
Srikanth,
with the driver documentation, Frank has provided a simple overview
example. Otherwise, the OCI driver works just like any other. Look
carefully at Frank's syntax for the connection string, though.
I've been using this driver for a couple of years now with very good
results - i
Dear All,
I want to connect to Oracle and save/retrieve the vector/raster files using OCI.
I have identified the classes ( ogrocidriver, ogrocistatement,
ogrocitablelayer, etc) in GDAL to achieve this.But I did not find any
documentation or examples to guide.
I would be thankful if anyone can prov
Hi ALL,
I am working on exporting features from other file formats into DGN and new
to GIS field. From the ogr documentation I found that there are significant
limitations on DGN writer part.
But can anyone explain me or show link to what is the meaning of each data
set creation option, what is th
Hello,
2009/7/16 Even Rouault :
> Jorge,
>
> CPLAssert should be rarely used. You should generally use CPLError instead.
> I've regularly removed remaining CPLAssert from GDAL code base to replace
> them with CPLError when it was appropriate.
>
> As you noted, CPLAssert causes an abort to the proc
On Thursday 16 July 2009 20:59:55 Even Rouault wrote:
> Le Thursday 16 July 2009 10:14:27 Jørn Vegard Røsnes, vous avez écrit :
> > Hi again,
> >
> > On Wednesday 15 July 2009 13:12:38 Jørn Vegard Røsnes wrote:
> > > Hi all,
> > >
> > > can you see the problem (this works with proj4)?
> > > It work
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