[gdal-dev] GSoC 2014 Weekly Report 8 : GDAL PostGIS Raster driver

2014-07-13 Thread Varun Saraf 
 Hi,

Below is my eighth weekly report.

*What did I do this week?*

   - Implemented calls from IRasterIO to the methods which are writing the
   query.

*What do I plan on doing next week?*

   - Processing of raster(s) and querying/updating the tiles already
   inserted with new band data.
   - Overview building.

*Am I blocked on anything?*

   - No.

Link to weekly report :
https://github.com/varunsaraf/postgis_raster/wiki/Report-8
Link to code repository : https://github.com/varunsaraf/postgis_raster
More details at : http://trac.osgeo.org/gdal/wiki/PostGIS_raster_driver

Regards,
Varun Saraf
Lab for Spatial Informatics
IIIT Hyderabad, India
___
gdal-dev mailing list
gdal-dev@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/gdal-dev

Re: [gdal-dev] warp taking time

2014-07-13 Thread adiba nizami 
Sorry for the late reply. Here is the command i  gave :

gdalwarp --config GDAL_CACHEMAX 512 -s_srs +proj=aea +lat_1=28 +lat_2=12
+lat_0=20 +lon_0=87 +x_0=200 +y_0=200 +ellps=WGS84 +datum=WGS84
+units=m +no_defs -t_srs +proj=aea +lat_1=28 +lat_2=12 +lat_0=20
+lon_0=87 +x_0=200 +y_0=200 +ellps=WGS84 +datum=WGS84 +units=m
+no_defs -te -138559.10 571316.50 3010515.63 4012751.95 -tr 18 18 -wm 512
-co BIGTIFF=YES -srcnodata 255 -dstnodata 255  file1.tif file2.tif .
file28.tif output.tif



On Thu, Jul 10, 2014 at 7:23 PM, Thornton, Michele M. thornto...@ornl.gov
wrote:

  Hello,



 I’m interested in this thread.  One comment I can add about gdal_merge.py
 is that it does not properly handle nodata values from the full (padded)
 extent of the input files.  gdalwarp, which can be VERY slow, does handle
 the nodata values correctly.



 Michele Thornton



 *From:* gdal-dev-boun...@lists.osgeo.org [mailto:
 gdal-dev-boun...@lists.osgeo.org] *On Behalf Of *bas smit
 *Sent:* Thursday, July 10, 2014 7:52 AM
 *To:* Chaitanya kumar CH
 *Cc:* gdal dev
 *Subject:* Re: [gdal-dev] warp taking time



 I am wondering why you are using gdalwarp for mosaicing images having same
 projection instead of gdal_merge.py?



 Bas Smit



 On Thu, Jul 10, 2014 at 7:14 PM, Chaitanya kumar CH 
 chaitanya...@gmail.com wrote:

 garfy,



 Please provide the gdalwarp command you used. Did you modify GDAL_CACHEMAX?



 On Thu, Jul 10, 2014 at 3:26 PM, garfy adiba.niz...@gmail.com wrote:

 Dear All,

 I am trying to generate mosaic of 28 input images using *gdalwarp*.
 All are in same projection. It has taken 5 days to generate the final
 output.
 Please find the gdalinfo of input and output attached. The input files are
 passed to warp in the order in which the gdalinfo is present in the
 attachement.

 Any input on improving the time would be really helpful.


 Thanks
 input_files_gdalinfo.txt
 
 http://osgeo-org.1560.x6.nabble.com/file/n5150453/input_files_gdalinfo.txt
 
 final_output_gdalinfo.txt
 
 http://osgeo-org.1560.x6.nabble.com/file/n5150453/final_output_gdalinfo.txt
 





 --
 View this message in context:
 http://osgeo-org.1560.x6.nabble.com/warp-taking-time-tp5150453.html
 Sent from the GDAL - Dev mailing list archive at Nabble.com.
 ___
 gdal-dev mailing list
 gdal-dev@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/gdal-dev





 --
 Best regards,
 Chaitanya kumar CH.

 +91-9494447584
 17.2416N 80.1426E


 ___
 gdal-dev mailing list
 gdal-dev@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/gdal-dev



 ___
 gdal-dev mailing list
 gdal-dev@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/gdal-dev




-- 
Regards,
Adiba Khan
___
gdal-dev mailing list
gdal-dev@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/gdal-dev