Changes between Initial Version and Version 7 of Ticket #803


Ignore:
Timestamp:
Jul 15, 2008, 3:53:01 AM (16 years ago)
Author:
Mateusz Łoskot
Comment:

Legend:

Unmodified
Added
Removed
Modified

  • Ticket #803

    • Property Cc Mateusz Łoskot added
    • Property Keywords ecw added

  • Ticket #803 – Description

    initial v7  
    1 {{{
    2 Frank: Running into trouble when generating high resolution views of very large
    3 ECW images. Using MapServer 4.5, latest ECW toolkit, CVS-based GDAL (downloaded
     1Frank: Running into trouble when generating high resolution views of very large ECW images. Using MapServer 4.5, latest ECW toolkit, CVS-based GDAL (downloaded
    42on 3/10.05) on SuSE 9.0. Here's the gdalinfo from the image in question (~33Gb):
    53
     4{{{
    65stlime@noah:/r01/data/drs/data/gen/state/mn> gdalinfo img_fsa01bim4.ecw
    76Driver: ECW/ERMapper Compressed Wavelets
    … …  
    4342Band 3 Block=555647x1 Type=Byte, ColorInterp=Blue
    4443  Overviews: arbitrary
     44}}}
    4545
    4646Everything's great until zooming in when I get an error:
    4747
     48{{{
    4849msDrawMap(): Image handling error. Failed to draw layer named 'fsa'. <br>
    49 An error has occurred: Error 48 "Could not perform Read/Write o: Unable to
    50 access file. GDALRasterIO() failed: drawGDAL()
     50An error has occurred: Error 48 "Could not perform Read/Write o: Unable to access file. GDALRasterIO() failed: drawGDAL()
     51}}}
    5152
    52 I've tested a number of extents and with this image the threshold for the error
    53 is approximately an extent with 6000 meters on a side (output image size
    54 500x500).
     53I've tested a number of extents and with this image the threshold for the error is approximately an extent with 6000 meters on a side (output image size 500x500).
    5554
    5655Steve
    57 }}}