[Gdal-dev] ADF -> AAIGrid, "IReadBlock failed"

[Patrick Min]

Alright, I feel silly now for not mentioning that
there are other raster files in the directory.
>From this page:
http://trac.osgeo.org/gdal/ticket/1198
I've now figured out that my data is "multitiled"..

>From that error ticket page I can't really tell if this was resolved.
I'm using gdal 1.4.1 here.

I suppose I could hack something that merges the index files and raster
files into a single large index&raster file..

Patrick


On 5/29/07, Patrick Min <pmin00 at gmail.com> wrote:
> Thanks for the reply. I wrote a Perl script to get some data
> out of hdr.adf, etc., maybe this helps (see below). It seems there are
> (475000 - 306840) / 5 = 33632 rows (as expected), but hdr.adf
> says a tile is 4 pixels high, and HTilesPerColumn is 2520 (?!), which
> should be 33632 / 4 = 8408, right?
>
> Patrick
>
>
> read_bounds_info(dblbnd.adf)
>   LLX: [13565]
>   LLY: [306840]
>   URX: [269640]
>   URY: [475000]
>
> read_stats_info(sta.adf)
>   SMin: [-8332]
>   SMax: [34338]
>   SMean: [1438.64260482693]
>   SStdDev: [2390.48273559427]
>
> read_header(hdr.adf)
>   HMagic [GRID1.2]
>   HCellType [1]
>   HPixelSizeX [5]
>   HPixelSizeY [5]
>   unknown1 [-115075]
>   unknown2 [399400]
>   HTilesPerRow [201]
>   HTilesPerColumn [2520]
>   HTileXSize [256]
>   unknown [1]
>   HTileYSize [4]