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

[Matt Wilkie]

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 Environment
10 Burns Road * Whitehorse, Yukon * Y1A 4Y9
867-667-8133 Tel * 867-393-7003 Fax
http://environmentyukon.gov.yk.ca/geomatics/
--------------------------------------------


On 05/10/2011 4:08 PM, Etienne Tourigny wrote:
> Hi all,
>
> I am adding support for the netcdf history attribute (which keeps
> track of all commands done on an netcdf file), I am trying to see how
> to include as much possible information as possible in the
> NCDFCreateCopy() function.
>
> Firstly, is there a way to access to the current command line which
> generated a GDALCreateCopy()?  All I have access to is what is passed
> to the NCDFCreateCopy() function, such as filename, input dataset,
> driver options.
>
> Secondly, would there be interest in introducing this sort of feature
> into the GDAL framework?  I would see it as an optional string which
> could be passed from the calling script to the Create() and
> CreateCopy() methods, or perhaps a global variable which drivers would
> be free to use or not.
> As Geotiff supports metadata, it would be a nice addition to it.
>
> Here is an example of netcdf history metadata:
> As you can see there is not much information from the GDAL command yet.
>
> {{{
> 		:history = "Wed Oct 05 19:59:26 2011: GDAL NCDFCreateCopy(
> trmm-cp51.nc, ... )\n",
> 			"Wed Sep 07 22:33:59 2011: cdo sellonlatbox,-80,-70,-20,-10
> tmp4-noc.nc tmp5.nc\n",
> 			"Wed Sep  7 22:33:53 2011: ncatted -a Conventions,global,d,,
> tmp4.nc tmp4-noc.nc\n",
> 			"Wed Aug 24 12:59:04 2011: ncatted -D 10 -a
> CoreMetadata.0,global,d,, -a ArchiveMetadata.0,global,d,, tmp3.nc
> tmp4.nc\n",
> 			"Tue Aug 23 21:04:45 2011: cdo seltimestep,1 tmp2.nc tmp3.nc\n",
> 			"Tue Aug 23 19:19:18 2011: cdo selvar,pcp tmp1.nc tmp2.nc\n",
> 			"Tue May 17 19:34:24 2011: cdo
> sellonlatbox,-85.25,-29.625,15.25,-50 3B43.2011.nc tmp1.nc\n",
> 			"Tue May 17 19:26:31 2011: cdo mergetime 3B43.110101.6A.nc
> 3B43.110201.6A.nc 3B43.110301.6A.nc 3B43.110401.6A.nc 3B43.2011.nc" ;
> }}}
>
> Regards,
> Etienne
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