Open gdevenyi opened 8 years ago
ok, is there anything unusual about that file (e.g. what is the voxel type)? Also, do you know if you have Convert_volumes_to_byte set to FALSE?
The mincheader of the file:
hdf5 y {
dimensions:
xspace = 193 ;
yspace = 229 ;
zspace = 193 ;
variables:
float image(zspace, yspace, xspace) ;
image:varid = "MINC standard variable" ;
image:vartype = "group________" ;
image:version = "MINC Version 2.0" ;
image:dimorder = "zspace,yspace,xspace" ;
image:valid_range = -12.0096292495728, 11.6458549499512 ;
double image-min ;
image-min:varid = "MINC standard variable" ;
image-min:vartype = "group________" ;
image-min:version = "MINC Version 2.0" ;
double image-max ;
image-max:varid = "MINC standard variable" ;
image-max:vartype = "group________" ;
image-max:version = "MINC Version 2.0" ;
double xspace ;
xspace:version = "MINC Version 2.0" ;
xspace:width = 1. ;
xspace:vartype = "group________" ;
xspace:start = -96. ;
xspace:spacing = "regular__" ;
xspace:alignment = "centre" ;
xspace:direction_cosines = 1., 0., 0. ;
xspace:class = "spatial" ;
xspace:comments = "X increases from patient left to right" ;
xspace:units = "mm" ;
xspace:varid = "MINC standard variable" ;
xspace:length = 193 ;
xspace:step = 1. ;
double yspace ;
yspace:version = "MINC Version 2.0" ;
yspace:width = 1. ;
yspace:vartype = "group________" ;
yspace:start = -132. ;
yspace:spacing = "regular__" ;
yspace:alignment = "centre" ;
yspace:direction_cosines = 0., 1., 0. ;
yspace:class = "spatial" ;
yspace:comments = "Y increases from patient posterior to anterior" ;
yspace:units = "mm" ;
yspace:varid = "MINC standard variable" ;
yspace:length = 229 ;
yspace:step = 1. ;
double zspace ;
zspace:version = "MINC Version 2.0" ;
zspace:width = 1. ;
zspace:vartype = "group________" ;
zspace:start = -78. ;
zspace:spacing = "regular__" ;
zspace:alignment = "centre" ;
zspace:direction_cosines = 0., 0., 1. ;
zspace:class = "spatial" ;
zspace:comments = "Z increases from patient inferior to superior" ;
zspace:units = "mm" ;
zspace:varid = "MINC standard variable" ;
zspace:length = 193 ;
zspace:step = 1. ;
// global attributes:
:ident = "devgab:cicws24:2016.08.31.14.28.28:16362:1" ;
:class = "real___" ;
:minc_version = "2.4.01" ;
data:
image-min = -12.0096292495728 ;
image-max = 11.6458549499512 ;
xspace = 0 ;
yspace = 0 ;
zspace = 0 ;
}
and mincinfo:
file: y.mnc
image: signed__ float -12.009629249572753906 to 11.645854949951171875
image dimensions: zspace yspace xspace
dimension name length step start
-------------- ------ ---- -----
zspace 193 1 -78
yspace 229 1 -132
xspace 193 1 -96
I don't have a Display.globals anywhere where the manual says it could be, so I have whatever the code default is for that setting (I think).
Can I check somehow?
The default value for that variable is unfortunately still TRUE. Try running Display with
Display -global Convert_volumes_to_byte false y.mnc
That fixes it.
So, I guess I can switch that in a ~/.mni-displayrc for myself.
Maybe that default should make it into the codebase?
@gdevenyi I had been planning to make it the default. Will do that today.
Out of curiosity - since register reported the correct value, I assume this means that it does not convert_volumes_to_byte anymore, either?
On Thu, Sep 1, 2016 at 8:52 AM, Robert D Vincent notifications@github.com wrote:
@gdevenyi https://github.com/gdevenyi I had been planning to make it the default. Will do that today.
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@zijdenbos Correct. The default was changed in Register a long time ago - I just changed it in Display today.
@zijdenbos Byte volumes are so 1996.
That's only 20 years ago :)
On Thu, Sep 1, 2016 at 11:46 AM, Robert D Vincent notifications@github.com wrote:
@zijdenbos https://github.com/zijdenbos Byte volumes are so 1996.
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I'm writing some code using nibabel to lookup voxel values from minc files, so I was using Display to look at the value under the cursor to compare (since I know both the world and voxel coodinates thanks to recent Display improvements).
I found consistent difference between my nibabel output and Display. After much testing, I have confirmed it's not my nibabel code as register reports the correct value.
Screenshots: Display: voxel [96,114,96]
Register: voxel [96,114,96]
Nibabel: