Hi,<br><br>I have tried running both gdal_merge and gdal_translate for reducing the resolution of individual tiles and I have found that both the data quality and speed for the conversion are identical. Since everything is identical is their any reason to prefer one program over the other for reducing resolution?
<br><br>Also if what is the preferred method as far as data quality is concerned where you want to have multiple passes at reducing the resolution as an example:<br><br>method 1<br>2x resolution: 1/2 of full resolution<br>
4x resolution: 1/4 of full resolution<br>8x resolution: 1/8 of full resolution<br>16x resolution: 1/16 of full resolution<br><br>method 2<br>
2x resolution: 1/2 of full resolution<br>
4x resolution: 1/2 of 2x resolution<br>
8x resolution: 1/2 of 4x resolution<br>
16x resolution: 1/2 of 8x resolution<br><br>Thanks,<br>
<br>-- <br>John J. Mitchell