Re: [gdal-dev] [EXT] GDAL sponsored maintenance report: Aug 2021-March 2023

Thank you Even, I appreciate this view and corresponding insight into the work of the GDAL sponsored maintenance - this is in addition to the actual work you've undertaken, and coaching of occasional contributors and question askers like myself! I hope that in course of time the bug fixing rati

Re: [gdal-dev] [EXT] Re: How to build STAC of local raster files?

534519723%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=hUnYEUHVXhmMzWXT126fGBru9GW0bsgcrQMvU6QyJQg%3D&reserved=0> in order to catch more eyeballs. Thanks! Matt Wilkie Geomatics Developer & Administrator Environment | Technology, In

[gdal-dev] How to build STAC of local raster files?

;m not clear on this part yet). Also asked at https://gis.stackexchange.com/questions/451951/how-to-build-stac-of-local-raster-files in order to catch more eyeballs. Thanks! Matt Wilkie Geomatics Developer & Administrator Environment | Technology, Innovation and Mapping T 867-667-8133 | Yuko

Re: [gdal-dev] [EXT] Re: [EXT] Re: [Doc] gdal_calc.py extent option

The definitions are correct. For the union you want a rectangle (or polygon) that's larger than the input, indeed. But you want the smallest of those rectangles, because there's an infinity of them. The larger ones would cover an arbitrary area of the plane (or the globe, if you want). Same for

Re: [gdal-dev] [EXT] Re: [Doc] gdal_calc.py extent option

To my mind the outputs of Union should be the largest extent area and Intersect is the smallest extent area. However any explanation in words alone will always have some ambiguity. It can't be avoided. Union and Intersect via Wiki.GIS.com (I do find the intersect diagram less clear in this exam

[gdal-dev] gdal-utils: understanding the __main__ pattern

Hello folks who know about the python script construction :) The pattern used in all of the python scripts under swig/python/gdal-utils is foreign to me. Can someone explain what's going on and why it's used? (or point to where this has been explored already). if __name__ == '__main__': sys.e

Re: [gdal-dev] Use GitPod for GDAL?

neral: > https://github.com/OSGeo/gdal/blob/6e6aff451dbcde450f051bff2f2e75ce6a4a3e6f/.github/workflows/cmake_builds.yml#L38 > (this one has pretty much all the pre packaged dependencies. you don't need > all that) > > Even > Le 18/02/2022 à 23:34, Matt Wilkie a écrit : > > This what I&

Re: [gdal-dev] using the docker images: updating?

ahh, so I've run into a Gitpod-ism. They automagically create a `gitpod` user and disable root when importing a docker image. Ok, well I have a troubleshooting path to follow now. Thanks! ___ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.os

[gdal-dev] using the docker images: updating?

When using the docker images, particularly 'osogeo/gdal' from docker hub, sudo isn't available. How does one `apt update` etc? thanks! ___ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev

[gdal-dev] docker images and gdal versions

I've been hearing of Docker for some time but haven't really tried to use it until this weekend. I'm early in the journey but I begin to see what the fuss is about. A quick question: what gdal version(s) should I see when pulling the image names I see in `gdal/docker` tree? With "osgeo/gdal:ubuntu

Re: [gdal-dev] Use GitPod for GDAL?

This what I've come up with: https://gitpod.io Create new >> search for gdal >> select OSGeo/gdal On launch: -- Could NOT find PROJ (missing: PROJ_DIR) CMake Error at /home/linuxbrew/.linuxbrew/Cellar/cmake/3.22.2/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230 (message): Cou

[gdal-dev] Use GitPod for GDAL?

Hi, Does anyone know how to use https://gitpod.io to set up a gdal development environment? I'm wondering if that might be an easy path for Windows folk like myself to test changes against linux (e.g. like this one https://github.com/OSGeo/gdal/pull/5296#issuecomment-1037141210). I've tried creat

Re: [gdal-dev] gdal-utils: Testing?

Ah, okay. So: ~~~ # test the main command line utilities (so both .exe and 'official' python scripts) cd autotest pytest utilities # test gdal-utils, the 'add-on' python scripts cd autotest pytest pyscripts ~~~ I don't feel a need to try adding anything to handle a specific path, pyscripts is nar

[gdal-dev] gdal-utils: Testing?

Hi, Is there a way to run autotests/pytest only for gdal-utils, or only those tests that involve a certain folder tree? -matt ___ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev

Re: [gdal-dev] How to fix path for gdal .py scripts in Anaconda-Windows?

Upon reflection it seems to me that both of these are work arounds for not having regular python wrapper executables created. Now that we can `pip install gdal-utils` perhaps it's better to use pip to create the wrappers. I have a little bit of experience with that and am will to tackle the nec

Re: [gdal-dev] How to fix path for gdal .py scripts in Anaconda-Windows?

On 2022-01-12 2:26 p.m., Idan Miara wrote: I had the same problem, here's my solution : https://github.com/OSGeo/gdal/blob/master/swig/python/gdal-utils/osgeo_utils/auxiliary/batch_creator.py On 2022-01-12 4:40 p.m., matt.wil...@yukon.ca wrote: Also see OSGEO4W make-bat-for-py.bat

Re: [gdal-dev] how to save history of gdal commands in metadata?

Esri records (some) processing history in the metadata and at times I have found that to be *very* useful. I for one would welcome gdal/ogr doing the same. matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of

Re: [gdal-dev] gdal_fillnodata smoothing water for a DEM

On September-27-11 9:50:39 AM, Matt Wilkie wrote: Here is an excellent article on editing elevation models using photo tools by Tom Patterson of the US National Park Service: http://www.shadedrelief.com/dem/dem.html If this appears to be out of context, that's because it is. ;-) It

Re: [gdal-dev] gdal_fillnodata smoothing water for a DEM

Here is an excellent article on editing elevation models using photo tools by Tom Patterson of the US National Park Service: http://www.shadedrelief.com/dem/dem.html -- matt wilkie Geomatics Analyst Information Management and Technology Yukon

Re: [gdal-dev] Re: python script to generate world files

ears to also to some things with regard to morphing the projection info from WKT to ESRI format. I don't know if that would take into account this possible pixel shift or not. http://linfiniti.com/2011/08/extract-projection-tool-for-qgis/ matt wilkie -

[gdal-dev] python script to generate world files

ugh I only have a blurred glimpses of understanding of programming and the like. :-) || Thank you Mike Toews for pointing me <http://gis.stackexchange.com/questions/14545/how-to-generate-world-files-for-raster-x> in the right direction, and additional thanks to Schuyler Erle for writi

Re: [gdal-dev] adding georeferencing information

Is there a quick way to add back georeferencing information to a geotif file that has been processed by Imagemagick? also see http://code.google.com/p/maphew/source/browse/gis/gdal_extras/bin/gdalcopyproj.py cheers, matt wilkie Geomatics Analyst

[gdal-dev] spatialreference.org down

Hey All, www.spatialreference.org is down right now (/The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later./) . Anyone know if this a glitch or something more permanent? thanks, -- matt wilkie

Re: [gdal-dev] GTiff optimisation

Yves, it's best to use gdalwarp without any compression options and then use gdal_translate as a last step to apply the compression. See http://trac.osgeo.org/gdal/wiki/UserDocs/GdalWarp#GeoTIFFoutput-coCOMPRESSisbroken for more. cheers, matt w

Re: [gdal-dev] jpeg in tiff artifacts

You can add a mask band to the tiff but unfortunately aside from gdalwarp and mapserver I don't think there is any other way to read it. see http://docs.oam.osgeo.org/storage/creating.html Thanks Brian! I've not used masks in gdal before. From my initial testing I think I can use that recipe f

[gdal-dev] jpeg in tiff artifacts

Hello, When I convert with gdal_translate and use jpeg compression in geotiff format there is artifacting on the edges. It looks like nodata is being ignored. Is there any way to avoid this? (and still use jpeg or equivalent space-saving compression) see attached. -- matt wilkie

Re: [gdal-dev] gdal_translate compress is larger??

predictor=2 the space savings was only 10% or so. matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393-7003 Fax http://environment

[gdal-dev] gdal_translate compress is larger??

ot; 15/06/2011 10:35 AM 1,003,987,364 _lzw.tif 15/06/2011 10:31 AM 958,908,507 _none.tif 15/06/2011 10:30 AM 965,940,411 _packbits.tif gdalinfo report is attached. source file at http://files.environmentyukon.ca/matt/gdal-trans-lzw/ (in about 20 minutes). GDAL 1.8.0, released 2011/0

Re: [gdal-dev] gdalbuildvrt does not support heterogenous band characteristics

Likely Quickbird_06m10.tif has more or less bands than the previous files, or band bit depth is different. That was it, thanks. For some reason although they were all created from the same source and process (arcmap > export > selected area) some images are 8bit RGB and others 16bit grey

[gdal-dev] gdalbuildvrt does not support heterogenous band characteristics

Hi Folks, what does this error mean? gdalbuildvrt -input_file_list img-list.txt mosaic.vrt 0...10Warning 6: gdalbuildvrt does not support heterogenous band characteristics . Skipping Quickbird_06m10.tif ...etc. thanks! -- matt wilkie Geomatics

Re: [gdal-dev] gdalwarp: ERROR 2: Out of memory allocating {number} byte destination buffer.

Hi Frank, Thanks for the clear explanation. I've added, with light editing, to http://trac.osgeo.org/gdal/wiki/UserDocs/GdalWarp. I imagine you will just have to use more modest buffers or else get a 64bit executable for gdalwarp. Running gdalwarp with defaults (no options specified) seems

[gdal-dev] gdalwarp: ERROR 2: Out of memory allocating {number} byte destination buffer.

ating 365425784 byte destination buffer. -- matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393-7003 Fax http://environmentyukon.gov.

Re: [gdal-dev] Table Names (FGDB)

On 30/05/2011 2:47 PM, Paul Ramsey wrote: ...so probably FeatureClass and Table names have to be unique regardless of what FeatureDataset they appear in (true?). I'm not knowledgeable to comment on the aspects of your post, but I can confirm that yes FC and Table names must be unique regardles

Re: [gdal-dev] nearblack troubles [SEC=UNCLASSIFIED]

> Worked for me using the following: > > #Change black to white > gdalbuildvrt -srcnodata 0 -vrtnodata 255 to-be-decollared.vrt > to-be-decollared.tif > #Run nearblack -white > nearblack -white -o decollared.tif to-be-decollared.vrt Luke, once again I thank

[gdal-dev] nearblack troubles

etadata: LAYER_TYPE=athematic }}} [1] http://code.google.com/p/maphew/source/browse/trunk/gis/o4w_extras/bin/gdalsetnull.py thanks in advance for your time and thoughts, -- matt wilkie Geomatics Analyst Information Management and Technology Yukon Depa

Re: [gdal-dev] Re: FileGDB OGR driver test

other with feature representations due in a couple of months, but I can make private subset release early if it's helpful. I'm willing to create and share other kinds for testing, just let me know what you're looking for. cheers, -- matt wilkie -

Re: [gdal-dev] Re: FileGDB OGR driver test

> ArcGIS 10 FileGDB's right ? If the api allows for using gdb's from different versions then the test suite should have different versions too. In any case I can make v10 gdb's. Current GDAL trunk builds against FileGDB API beta3 under Linux 32bit. Too bad ESRI doesn't provide any 64bit build

Re: [gdal-dev] error adding ecw on Ubuntu 10.4 (lucid)

> Perhaps try setting the environment variable GDAL_DRIVER_PATH to > /usr/lib/gdal17plugins Ok, that finally did the trick. Thanks for your help. $ export GDAL_DRIVER_PATH=/usr/lib/gdal17plugins Is this normally set as part of the install? (e.g. should I report a packaging bug?) -- -matt _

Re: [gdal-dev] error adding ecw on Ubuntu 10.4 (lucid)

> Check that the gdal_ECW.so (or whatever is name is) is installed in the GDAL > plugin directory and then do a ldd on this .so to see if the ECW SDK .so are > reachable. You might need to adjust the /etc/ld.so.conf or LD_LIBRARY_PATH to > add them. Is this searchable: ? {{{ matt@ubuntu-desktop:~

Re: [gdal-dev] error adding ecw on Ubuntu 10.4 (lucid)

> Did you run "sudo ldconfig"? yes -- -matt ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev

Re: [gdal-dev] error adding ecw on Ubuntu 10.4 (lucid)

> So you should try "sudo gdal-ecw-build /usr/local" because you "./configure" > the ECW SDK without any installation prefix. Ahh, thanks Even. That let me run gdal-ecw-build without error, though there were lots of deprecation warnings. "gdalinfo --formats |grep -i ecw" still comes back empty h

[gdal-dev] error adding ecw on Ubuntu 10.4 (lucid)

Hi Folks, I'm trying to add ECW read support to gdal in Ubuntu 10.4 (Lucid) amd64 and not having much luck. The end goal is simply to be able to view ecw images in QGIS. What I've tried to date follows. Edited for space, things were not actually installed all at the same time or in the order as

Re: [gdal-dev] Licensing Policy for drivers and applications

Well said Frank. Thank you. matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393-7003 Fax http://environmentyukon.gov.yk.ca/geomatics

Re: [gdal-dev] Licensing Policy for drivers and applications

#x27;t see osgeo4w's bundling or the current RFC under discussion to be much different from enabling Ubuntu's universe and restricted-driver repositories. matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of

[gdal-dev] FileGDB API beta opens

ile-gdb-api [2] http://resources.arcgis.com/node/agreement/3193 cheers, -- matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393-7003 Fax http://enviro

Re: [gdal-dev] ESRI file geodatabase API finally announced

http://blogs.esri.com/Dev/blogs/geodatabase/archive/2010/12/13/File-Geodatabase-API-details.aspx Thanks for the heads up Bart. The anouncement is for commencement of beta in January: "Thanks for your interest in the File Geodatabase API. The beta program for the File Geodatabase API is curre

Re: [gdal-dev] geoPDF file "not recognized as a supported format" by GDAL1.8dev ?

yes, GDAL should be able to read geoPDF topo files from the USGS. (geospatial PDF is more neutral term than geoPDF that happens to be a trademark This is great news, thanks! -matt ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo

Re: [gdal-dev] Reading MXD files

Here is a recipe for accessing arcobjects from python: http://gis.stackexchange.com/questions/80/how-do-i-access-arcobjects-from-python cheers, matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10

Re: [gdal-dev] ERDAS ECW JPEG2000 SDK v4.1

CW and JPEG2000 read support in desktop applications (without having to learn an additional toolkit). / matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 8

Re: [gdal-dev] ArcGIS 10

Jason, thank you for this detailed explanation of goings on behind the curtain. Much of it is over my head, but I appreciate being able to now percieve the outline of the shadowy shapes in the fog. :) matt wilkie Geomatics Analyst Information

[gdal-dev] [off-topic] public beta for GIS Stack Exchange

change.com/* cheers, -- matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393-7003 Fax http://environmentyukon.gov.yk.ca

[gdal-dev] [off-topic] Help build GIS specific Stack Exchange

Hello Folks, It's just a proposal right now, but with your help it could become a reality, a vendor neutral /"Q&A site for programmers, DBAs, Cartographers, Geographers and anyone interested in GIS professionally"/ Come aboard and help build an information-rich community based gis technical s

Re: [gdal-dev] Re: ESRI file geodatabase support

For what it's worth, here is the reply I recieved from ESRI regarding the release plans. In a follow on message I also asked whether the API would require runtime licensing or similar, to which I've not received a reply; I waited a week or so. Hi Matt, To answer your question abo

Re: [gdal-dev] Re: ESRI file geodatabase support

7) ??more ideas/requests?? > - Have metadata as part of the file, rather than a separate file, to > avoid getting lost when copying data YES please! matt wilkie Geomatics Analyst Information Management and Technology Yukon Departm

[gdal-dev] Re: ESRI file geodatabase support

> So the question is: is it true that for a new "universal" spatial format to > be born it has to have at least read support in the closed source world? If spatialite, or something like it, sees widespread use elsewhere ESRI will read it. Heck they already incorporate gdal, even to the point of d

[gdal-dev] Re: ESRI file geodatabase support

I think discussing a shapefile successor, or even perhaps a code sprint, is a very good topic for FOSS4G. This same thread that we're weaving now is/has happened on a number mailing lists and usually generated dozens of responses each time. The interest is clear. From my vantage the germinating se

Re: [gdal-dev] ESRI file geodatabase support

[Chris] "While ESRI would ideally like to open the file geodatabase format in a manner similar to what we did for shapefiles when we released ArcView 2, geodatabases are complex and can be easily corrupted outside the ArcGIS environment." Well, that to me says that either ESRI is mis-informing

Re: [gdal-dev] ESRI file geodatabase support

ho the request for people attending *any* ESRI conferences to ask about both a public file format specifcation and programming API to the file geodatabase. best regards, matt wilkie Geomatics Analyst Information Management and Technology Yukon Depa

Re: [gdal-dev] ESRI file geodatabase support

If you want to know how to use it, I sent an e-mail to the mailing list earlier http://www.mail-archive.com/gdal-dev@lists.osgeo.org/msg05562.html Hi Ragi, thanks for re-posting this. I missed the earlier announcement. matt wilkie Geomatics

Re: [gdal-dev] ESRI file geodatabase support

ions-on-the-file-geodatabase-api/ http://www.spatialdbadvisor.com/blog/121/the-shapefile-manifesto/ matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 86

Re: [gdal-dev] Pretty Much Off Topic: Development IDEs

Perhaps not an IDE as most people think of them, but it is certainly a useful tool with some IDE qualities: Leo Outlining Editor - http://webpages.charter.net/edreamleo/front.html cheers, matt wilkie Geomatics Analyst Information Management and

[gdal-dev] difference between -a_nodata and -dstnodata?

Dear GDAL, What is the difference between gdal_translate's "assign nodata" and gdalwarp's "destination nodata"? thanks! -- matt wilkie Geomatics Analyst Information Management and Technology Yukon Departmen

[gdal-dev] off-topic: Canadian geospatial data, updating

t front. So now we come to why I am writing to all of you: are you aware of any data warehouse service which might be coaxed into mirroring this data and making it available by rysnc? thank you for your thoughts, -- matt wilkie Geomatics Ana

Re: [gdal-dev] Will gdalinfo generate the pam .aux.xml files?

On 10/05/2010 11:40 AM, Chaitanya kumar CH wrote: Check if gdalinfo creates the xml files when used with the -stats option on your images. But be careful with 32bit float rasters. I just filed a bug on "gdalinfo -stats" not computing min/max properly on these, http://trac.osgeo.org/gdal/ticke

Re: [gdal-dev] Installing additional packages for python in OSGeo4W

s reasons :), but it does have it's limitations and is not as widely tested. cheers, matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9

Re: [gdal-dev] Installing additional packages for python in OSGeo4W

embeds python 2.6 into it's own install tree and doesn't make it available system wide; we'll see. cheers, matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road

Re: [gdal-dev] Installing additional packages for python in OSGeo4W

Windows registry - http://trac.osgeo.org/osgeo4w/ticket/114 Longer term, I'd like see ipython added to the o4w packages list, but have not had the time to devote to it yet. cheers, matt wilkie Geomatics Analyst Information Management and Techn

Re: [gdal-dev] Reading compressed GZIP files

As a side note, I’m sure this has come up before, but I couldn’t find a search engine to for the entire e-mail archives. Am I just missing it? Mail archive is nice and speedy, not sure of it's reach: http://www.mail-archive.com/gdal-dev@lists.osgeo.org/maillist.html Nabble goes back to 2005-

Re: [Gdal-dev] GDAL scripting with Python 2.5 (on windows)

route :) http://trac.osgeo.org/osgeo4w/ticket/114 cheers, matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-39

Re: [gdal-dev] GDAL scripting with Python 2.5 (on windows)

s in C:\Osgeo4w\bin\ which you can use as a model for your own to get started. cheers, matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 8

Re: [gdal-dev] Fastest vector format for combining shapefiles

tialite support and they said they had >> no plans to support it. Well I for one will open a request with ESRI tech support to add a driver for it - after I prove to myself that spatial-lite will work satisfactorily in-house of course. cheers, matt wilkie --

Re: [gdal-dev] Fastest vector format for combining shapefiles

ou posted said. And thanks for the pouinter. It made interesting reading and likely largely covers the ground this thread might, should it continue. best regards, matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of E

Re: [gdal-dev] Fastest vector format for combining shapefiles

ve to export to an intermediate state to transfer to another machine or medium and then import on the other end. Maybe this is more properly a limitation of the readily available tools than the storage format though. best regards, matt wilkie Ge

[gdal-dev] ANN: Apt commandline installer for OSGeo4W now at v0.0-2

with a usage message ("apt remove [package_name]"), at the least. Feedback is welcome, especially on programming advice! Please use the o4w trac for logging bugs. Enjoy! -- matt wilkie Geomatics Analyst Information Management and Technology Yuko

Re: [gdal-dev] how to batch rgb2pct

rgb2pct v:\historic_topos\rects\w\%%f v:\historic_topos\8bits\w\%%f ) or interactively from the command line: pushd v:\historic_topos\rects\w\ for %f in (*.tif) do rgb2pct %f ..\..\8bits\w\%f popd More info at http://ss64.com/nt/call.html cheers, m

Re: [gdal-dev] Fastest vector format for combining shapefiles

I'm by no way a vector expert, but for this kind of stuff I'd go the postgis way, at least for intermediate storage. I've thought of this but have shied away from it because of the overhead of installing postgis etc. just to get started. Time to get over my shyness perhaps :)

Re: [gdal-dev] Fastest vector format for combining shapefiles

o this or a budget, but I can't get one without an idea of what to ask for either. best regards, matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yuk

Re: [Gdal-dev] Compress via NTFS or in-image for performance?

Thanks for your thoughts Chaitanya. I was hoping someone might have some data, but it looks like I might have to devise some tests and see which route works best in our environment. :) cheers, -matt -- View this message in context: http://n2.nabble.com/Compress-via-NTFS-or-in-image-for-perfor

[Gdal-dev] Compress via NTFS or in-image for performance?

Dear GDAL, Any thoughts on whether the best read/write performance vs disk space used is achieved through file system compression or in-raster compression? The former would be via Windows NTFS compact and the latter via TIFF LZW or perhaps JP2. thanks, -matt -- View this message in context: h

Re: [Gdal-dev] gdal/ogr/proj and NAD83(CSRS)

>> In future a person or program using data defined as NAD83(CSRS) will >> reasonably expect sub-meter datum accuracy, for that is the purpose of >> the datum. if this is not the case, it should not call itself such. > > The accuracy of any data is irrelevant to the projection it's in though. I > c

Re: [Gdal-dev] gdal/ogr/proj and NAD83(CSRS)

Hi Robert, thank you for contributing your insight, it helps! > cs2cs -v is quite clear about what it's doing, OGR not so much. > > Using the "straight" Proj EPSG defs on my system: > $ cs2cs -v +init=epsg:3579 +to +init=epsg:4617 ... > No datum transform will happen (ellipses match, and +towgs8

Re: [Gdal-dev] gdal/ogr/proj and NAD83(CSRS)

Let's see if I have this straight then: if I specify -t_srs epsg:4617 and not +nadgrid, no datum transformation occurs, even though the output .prj file says it has? -matt Francesco P. Lovergine wrote: > > On Fri, Jul 24, 2009 at 09:09:27AM -0700, Matt Wilkie wrote: >> &g

Re: [Gdal-dev] gdal/ogr/proj and NAD83(CSRS)

> 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

Re: [Gdal-dev] gdal/ogr/proj and NAD83(CSRS)

> 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

[gdal-dev] gdal/ogr/proj and NAD83(CSRS)

n the proj4 reference files at spatialreference.org are in error and should probably be removed, or something.)) So now I'm wondering if transforming a file with gdal/ogr actually results in NAD83(CSRS) data, or if it really puts out NAD83 and blindly writes out the epsg code? cheers,

[gdal-dev] offtopic: spatialreference.org broken entry for Mexixo CCL

+lat_2=29.5 +units=m is this correct? thanks, -- matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393-7003 Fax http

Re: [gdal-dev] Motion: Matthew Perry as a GDAL committer

It sounds to me like Matt Perry wants to hand over maintenance to someone else (though I wouldn't be surprised if he put in a hand now and again if he had commit access). matt wilkie Geomatics Analyst Information Management and Technology

[gdal-dev] more commands, less utilities

d I'd be asking others to do work that I can't!). matt wilkie Geomatics Analyst Information Management and Technology Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393-7003 Fax http://environment

Re: [gdal-dev] Converting USGSDEM into GTOP30 DEM or DTED

s the case for CDED which was derived from DTED. best regards, matt wilkie Geographic Information, Information Management and Technology, Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393-7003 Fax

Re: [gdal-dev] Border slivers and JPEG2000 compression

ns)? Black and white images should compress pretty well. matt wilkie Geographic Information, Information Management and Technology, Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-39

Re: [gdal-dev] Border slivers and JPEG2000 compression

up" lossy compressed airphotos so that color pixels can be treated as transparent when mosaicing." cheers, matt wilkie Geographic Information, Information Management and Technology, Yukon Department of Environment 10 Burns Road * Whiteho

Re: [gdal-dev] "gdalwarp -te " units of source or target srs?

ank you for the kind upward estimation of my coding ability though! cheers, matt wilkie Geographic Information, Information Management and Technology, Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-39

[gdal-dev] make error: a bug report, mailing list Q, or RTFM?

Hello, I'm trying to compile svn gdal on Ubuntu 8.10 in order to take advantage of some of the recent things in 1.6. I'm getting an error with make when " --with-unix-stdio-64=yes" is used , pasted below. Make is successful when I don't use it. Is this kind of thing a bug report, a question for th

Re: [gdal-dev] "gdalwarp -te " units of source or target srs?

e the same order? > The -te arguments are in the output file coordinate system. Perhaps this could be added to http://www.gdal.org/gdalwarp.html for clarification. thanks again! (I was really pulling my hair out) matt wilkie Geographic Inf

[gdal-dev] "gdalwarp -te " units of source or target srs?

"W, 60d 3'7.24"N) Upper Right ( 1002049.121, 1322710.243) (129d53'51.55"W, 65d59'34.53"N) Lower Right ( 1002049.121, 652571.483) (131d58'12.52"W, 60d 3'11.61"N) Center ( 499519.945, 987640.863) (141d 0'34.57"W, 63d22'43.99&

[gdal-dev] ogr2ogr: why only inserting the first file?

gml 094a02_3_0.gml thanks in advance for your time, -- matt wilkie Geographic Information, Information Management and Technology, Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133 Tel * 867-393

Re: [gdal-dev] gdal_merge

images rather than blend them, but also want to use bilinear or cubic resampling. cheers, matt wilkie Geographic Information, Information Management and Technology, Yukon Department of Environment 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 867-667-8133

Re: [gdal-dev] gdal_priv.h not found on ubuntu

> Try: > > g++ -I/usr/include/gdal hillshade.cpp -lgdal -o hillshade Thank you for the suggestion, still no good though: :~/src/demtools$ g++ -I/usr/include/gdal hillshade.cpp -lgdal -o hillshade /usr/bin/ld: cannot find -lgdal collect2: ld returned 1 exit status :~/src/demtools$ g++ -I/usr/incl

[gdal-dev] gdal_priv.h not found on ubuntu

Hello Folks, I could use some hand-holding please... :) I'm trying to compile Matt Perry's hillshade [http://www.perrygeo.net/wordpress/?p=7] utility on Ubuntu 8.10 (amd64 if that makes a difference). I'm told "hillshade.cpp:24:23: error: gdal_priv.h: No such file or directory". I have installed

Re: [gdal-dev] error allocatint [sic] destination buffer

of 500 for memory usage and it worked, topping out at 2.9gb of ram usage according to sysinternals Process Explorer. So I'm guessing that the first time the 2gb figure I was seeing in ram usage was what gdal was already using, not what it asked for and failed to get. thank

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