[MINC-users] ana2mnc problem

[Catherine Ogilvie]

Andrew, the new ana2mnc program you sent me worked wonderfully.

However, I then needed the images transformed into sagittal orientation. I 
tried to use the minc programs suggested by everyone on minc-users, but when I 
had a lot of difficulty I had them transformed into sagittal while in .hdr 
.img format by the group sending them to me. Now when I run the dimension 
transformed .hdr .img files on the ana2mnc program it does not turn out a 
readable format, with the repeated warning output:

Warning: you specified -swap_bytes, but I can't swap this type if input

I'm not sure what's happening.

When I convert to minc, the dimensions of the images in original axial form 
are:

image: signed__ short 0 to 32767
image dimensions: zspace yspace xspace
    dimension name         length         step        start
    --------------         ------         ----        -----
    zspace                     64      2.72727     -87.2727
    yspace                    256     0.859375         -110
    xspace                    256    -0.859375          110

The dimensions in transformed sagittal form, when converted to minc, are:

image: signed__ float -1.6814541463787951101e+38 to 3.3836776830158255673e+38
image dimensions: zspace yspace xspace
    dimension name         length         step        start
    --------------         ------         ----        -----
    zspace                    256     0.859375         -110
    yspace                    256     0.859375         -110
    xspace                    256    -0.859375          110

not sure if this makes a difference, but this is the one that's giving me the 
errors and pixelated output.

Thanks for your help.
Catherine Ogilvie


>===== Original Message From Andrew Janke <andrew_janke@iinet.net.au> =====
>On Wed, 8 Dec 2004, Catherine Ogilvie wrote:
>
>> Hi. I'm trying to use ana2mnc for the first time. I have had a .img and 
.hdr
>> pair sent to me from another lab which uses analyze. When I run ana2mnc I 
get
>> this:
>>
>> ana2mnc: sizeof header: 1543569408
>> ana2mnc: Hrm, attempting byte-swapping on ANATcw.24_02_03_2.fid_001.hdr
>> ana2mnc: No x origin info found, guessing..
>> ana2mnc: No y origin info found, guessing..
>> ana2mnc: No z origin info found, guessing..
>>
>> and a very strangely pixelated output.
>
>I'm guessing that when you tranferred the data, the header was byte swapped 
and
>the data wasn't.
>
>Try this version of ana2mnc
>
>    http://www.bic.mni.mcgill.ca/~rotor/distro/ana2mnc-1.3c
>
>using the -swap_data option.
>
>If this works, I'll add this feature into the next release of ana2mnc
>
>
>--
>Andrew Janke (andrew_janke@iinet.net DOT au || www.cmr.uq.edu.au/~rotor)
>Australia->Brisbane            H: +61 7 3390 6332  || M: +61 4 2138 8581