Re: [gdal-dev] does gdal support multiple simultaneous writers to raster

thanks for the prompt response. It would have been nice to use the GDAL API in a multi-process (parallelised) world if feasible. We are increasingly seeing the need to move to multi-core (parallel) access so we can spread the processing load across multiple CPU's, but we do like to keep our data

Re: [gdal-dev] does gdal support multiple simultaneous writers to raster

Paul, Generally speaking - no - GDAL does not now support multi-threaded writing. Part of this is due to the way stuff gets write-flushed out of the block cache and partly it is just that none of GDAL supports multiple threading on a single dataset. This statement is based on the assumption it i

[gdal-dev] does gdal support multiple simultaneous writers to raster

I am looking to parallelize a long duration gridding process, and was wondering if GDAL can support multiple simultaneous writers from processess? I am not sure if any of the underlying raster formats support this? thanks in advance. regards pk __

Re: [gdal-dev] Reprojecting GeoTIFFs with Overviews?

My apologies for not being clear about my reasoning. If you're still curious, I've updated the image to better illustrate what the overviews should look like and why they shouldn't be recomputed (at small scales, fewer streaklets are drawn): http://jgreenlaw.org/gdal/ngofs-wl.png Thanks for the i

Re: [gdal-dev] GDAL Language support

Le jeudi 10 janvier 2013 22:08:36, Geoff Shipton a écrit : > A simple users question! > > > > I recently had problems running GdalWarp.exe on a TIF that was located in a > folder that Chinese characters in the name. The solution was > straightforward of course - just re-name the folder. > > >

[gdal-dev] GDAL Language support

A simple users question! I recently had problems running GdalWarp.exe on a TIF that was located in a folder that Chinese characters in the name. The solution was straightforward of course - just re-name the folder. However I was wondering what, if any, support there is for this situation u

Re: [gdal-dev] Reprojecting GeoTIFFs with Overviews?

Le jeudi 10 janvier 2013 19:03:33, Jason Greenlaw - NOAA Affiliate a écrit : > Norman, > > Unfortunately that's not an option - In this case, my overviews are > generated separately as individual .ovr files, e.g.: > > NGOFS_WL.tif > NGOFS_WL.tif.ovr > NGOFS_WL.tif.ovr.ovr > NGOFS_WL.tif.ovr.ovr.o

Re: [gdal-dev] Reprojecting GeoTIFFs with Overviews?

Norman, Unfortunately that's not an option - In this case, my overviews are generated separately as individual .ovr files, e.g.: NGOFS_WL.tif NGOFS_WL.tif.ovr NGOFS_WL.tif.ovr.ovr NGOFS_WL.tif.ovr.ovr.ovr NGOFS_WL.tif.ovr.ovr.ovr.ovr I'm then stitching them together into a single image with gdal

Re: [gdal-dev] Reprojecting GeoTIFFs with Overviews?

Jason you need to make overviews for the reprojected image see http://www.gdal.org/gdaladdo.html On Jan 10, 2013, at 12:20 PM, Jason Greenlaw - NOAA Affiliate wrote: > Using gdalwarp I'm attempting to reproject a 4-band (RGBA) GeoTIFF (in > EPSG:4269) containing 4 overviews to web mercato

[gdal-dev] Reprojecting GeoTIFFs with Overviews?

Using gdalwarp I'm attempting to reproject a 4-band (RGBA) GeoTIFF (in EPSG:4269) containing 4 overviews to web mercator (EPSG:3857). While the reprojection seems to work fine for the image itself, it appears the overviews are not being reprojected/carried over to the new reprojected GeoTIFF. I'v

Re: [gdal-dev] (no subject)

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