AFNI program: SurfDist
Output of -help
Usage: SurfDist [OPTIONS] <SURFACE> <NODEPAIRS>
Output shortest distance between NODEPAIRS along
the nesh of SURFACE, or the Euclidian distance.
Mandatory options:
<SURFACE> : Surface on which distances are computed.
(For option's syntax, see
'Specifying input surfaces' section below).
<NODEPAIRS> : Specifying node pairs can be done in two ways
<FROM_TO_NODES>: A dataset of two columns where each row
specifies a node pair.
(For option's syntax, see
'SUMA dataset input options' section below).
or
<-from_node START>: Specify one starting node.
<TO_NODES>: Specify one column of 'To' node indices.
Node pairs are between START and each node
in TO_NODES.
(For option's syntax, see
'SUMA dataset input options' section below).
Optional stuff:
-node_path_do PATH_DO: Output the shortest path between
each node pair as a SUMA Displayable
object.
-Euclidian: Calculate Euclidian distance, rather than graph distance.
-Graph: Calculate distance along the mesh (default).
example 1:
echo make a toy surface
CreateIcosahedron
echo Create some nodepairs
echo 2 344 > nodelist.1D
echo 416 489 >> nodelist.1D
echo 415 412 >> nodelist.1D
echo 123 32414 >> nodelist.1D
echo Get distances and write out results in a 1D file
SurfDist -i CreateIco_surf.asc \
-input nodelist.1D \
-node_path_do node_path > example.1D
echo 'The internode distances are in this file:'
cat example.1D
echo 'And you can visualize the paths this way:'
suma -niml &
DriveSuma -com show_surf -label ico \
-i_fs CreateIco_surf.asc \
-com viewer_cont -load_do node_path.1D.do
example 2: (for tcsh)
echo Say one has a filled ROI called: Area.niml.roi on
echo a surface called lh.smoothwm.asc.
set apref = Area
set surf = lh.smoothwm.asc
echo Create a dataset from this ROI with:
ROI2dataset -prefix ${apref} -input ${apref}.niml.roi
echo Get the nodes column forming the area
ConvertDset -i ${apref}.niml.dset'[i]' -o_1D_stdout \
> ${apref}Nodes.1D
echo Calculate distance from node 85329 to each of ${apref}Nodes.1D
SurfDist -from_node 85329 -input ${apref}Nodes.1D \
-i ${surf} > ${apref}Dists.1D
echo Combine node indices and distances from node 85329
1dcat ${apref}Nodes.1D ${apref}Dists.1D'[2]' \
> welt.1D.dset
echo Now load welt.1D.dset and overlay on surface
echo Distances are in the second column
echo 'And you can visualize the distances this way:'
suma -niml &
sleep 4
DriveSuma -com show_surf -label oke \
-i_fs ${surf} \
-com pause hit enter when surface is ready \
-com surf_cont -load_dset welt.1D.dset \
-I_sb 1 -T_sb 1 -T_val 0.0
example 3:
echo make a toy surface
CreateIcosahedron
echo Create some nodepairs
echo 2 344 > nodelist.1D
echo 416 489 >> nodelist.1D
echo 415 412 >> nodelist.1D
echo 123 32414 >> nodelist.1D
echo Get Euclidian distances and write out results to file
SurfDist -i CreateIco_surf.asc \
-input nodelist.1D \
-Euclidian > example3.1D
Specifying input surfaces using -i or -i_TYPE options:
-i_TYPE inSurf specifies the input surface,
TYPE is one of the following:
fs: FreeSurfer surface.
If surface name has .asc it is assumed to be
in ASCII format. Otherwise it is assumed to be
in BINARY_BE (Big Endian) format.
Patches in Binary format cannot be read at the moment.
sf: SureFit surface.
You must specify the .coord followed by the .topo file.
vec (or 1D): Simple ascii matrix format.
You must specify the coord (NodeList) file followed by
the topo (FaceSetList) file.
coord contains 3 floats per line, representing
X Y Z vertex coordinates.
topo contains 3 ints per line, representing
v1 v2 v3 triangle vertices.
ply: PLY format, ascii or binary.
Only vertex and triangulation info is preserved.
mni: MNI .obj format, ascii only.
Only vertex, triangulation, and node normals info is preserved.
byu: BYU format, ascii.
Polygons with more than 3 edges are turned into
triangles.
bv: BrainVoyager format.
Only vertex and triangulation info is preserved.
dx: OpenDX ascii mesh format.
Only vertex and triangulation info is preserved.
Requires presence of 3 objects, the one of class
'field' should contain 2 components 'positions'
and 'connections' that point to the two objects
containing node coordinates and topology, respectively.
gii: GIFTI XML surface format.
Note that if the surface filename has the proper extension,
it is enough to use the -i option and let the programs guess
the type from the extension.
-onestate: Make all -i_* surfaces have the same state, i.e.
they all appear at the same time in the viewer.
By default, each -i_* surface has its own state.
For -onestate to take effect, it must precede all -i
options with on the command line.
-anatomical: Label all -i surfaces as anatomically correct.
Again, this option should precede the -i_* options.
Specifying surfaces using -t* options:
-tn TYPE NAME: specify surface type and name.
See below for help on the parameters.
-tsn TYPE STATE NAME: specify surface type state and name.
TYPE: Choose from the following (case sensitive):
1D: 1D format
FS: FreeSurfer ascii format
PLY: ply format
MNI: MNI obj ascii format
BYU: byu format
SF: Caret/SureFit format
BV: BrainVoyager format
GII: GIFTI format
NAME: Name of surface file.
For SF and 1D formats, NAME is composed of two names
the coord file followed by the topo file
STATE: State of the surface.
Default is S1, S2.... for each surface.
Specifying a Surface Volume:
-sv SurfaceVolume [VolParam for sf surfaces]
If you supply a surface volume, the coordinates of the input surface.
are modified to SUMA's convention and aligned with SurfaceVolume.
You must also specify a VolParam file for SureFit surfaces.
Specifying a surface specification (spec) file:
-spec SPEC: specify the name of the SPEC file.
Specifying a surface using -surf_? method:
-surf_A SURFACE: specify the name of the first
surface to load. If the program requires
or allows multiple surfaces, use -surf_B
... -surf_Z .
You need not use _A if only one surface is
expected.
SURFACE is the name of the surface as specified
in the SPEC file. The use of -surf_ option
requires the use of -spec option.
SUMA dataset input options:
-input DSET: Read DSET1 as input.
In programs accepting multiple input datasets
you can use -input DSET1 -input DSET2 or
input DSET1 DSET2 ...
NOTE: Selecting subsets of a dataset:
Much like in AFNI, you can select subsets of a dataset
by adding qualifiers to DSET.
Append #SEL# to select certain nodes.
Append [SEL] to select certain columns.
Append {SEL} to select certain rows.
The format of SEL is the same as in AFNI, see section:
'INPUT DATASET NAMES' in 3dcalc -help for details.
Append [i] to get the node index column from
a niml formatted dataset.
* SUMA does not preserve the selection order
for any of the selectors.
For example:
dset[44,10..20] is the same as dset[10..20,44]
Also, duplicate values are not supported.
so dset[13, 13] is the same as dset[13].
I am not proud of these limitations, someday I'll get
around to fixing them.
SUMA mask options:
-n_mask INDEXMASK: Apply operations to nodes listed in
INDEXMASK only. INDEXMASK is a 1D file.
-b_mask BINARYMASK: Similar to -n_mask, except that the BINARYMASK
1D file contains 1 for nodes to filter and
0 for nodes to be ignored.
The number of rows in filter_binary_mask must be
equal to the number of nodes forming the
surface.
-c_mask EXPR: Masking based on the result of EXPR.
Use like afni's -cmask options.
See explanation in 3dmaskdump -help
and examples in output of 3dVol2Surf -help
NOTE: Unless stated otherwise, if n_mask, b_mask and c_mask
are used simultaneously, the resultant mask is the intersection
(AND operation) of all masks.
[-novolreg]: Ignore any Rotate, Volreg, Tagalign,
or WarpDrive transformations present in
the Surface Volume.
[-noxform]: Same as -novolreg
[-setenv "'ENVname=ENVvalue'"]: Set environment variable ENVname
to be ENVvalue. Quotes are necessary.
Example: suma -setenv "'SUMA_BackgroundColor = 1 0 1'"
See also options -update_env, -environment, etc
in the output of 'suma -help'
Common Debugging Options:
[-trace]: Turns on In/Out debug and Memory tracing.
For speeding up the tracing log, I recommend
you redirect stdout to a file when using this option.
For example, if you were running suma you would use:
suma -spec lh.spec -sv ... > TraceFile
This option replaces the old -iodbg and -memdbg.
[-TRACE]: Turns on extreme tracing.
[-nomall]: Turn off memory tracing.
[-yesmall]: Turn on memory tracing (default).
NOTE: For programs that output results to stdout
(that is to your shell/screen), the debugging info
might get mixed up with your results.
Global Options (available to all AFNI/SUMA programs)
-overwrite: Overwrite existing output dataset.
Equivalent to setting env. AFNI_DECONFLICT=OVERWRITE
-ok_1D_text: Zero out uncommented text in 1D file.
Equivalent to setting env. AFNI_1D_ZERO_TEXT=YES
-Dname=val: Set environment variable 'name' to value 'val'
For example: -DAFNI_1D_ZERO_TEXT=YES
-Vname=: Print value of environment variable 'name' to stdout and quit.
This is more reliable that the shell's env query because it would
include envs set in .afnirc files and .sumarc files for SUMA
programs.
For example: -VAFNI_1D_ZERO_TEXT=
-all_opts: Try to identify all options for the program from the
output of its -help option. Some options might be missed
and others misidentified. Use this output for hints only.
-h_find WORD: Look for lines in this programs's -help output that match
(approximately) WORD.
-h_view: Open help in text editor. AFNI will try to find a GUI editor
on your machine. You can control which it should use by
setting environment variable AFNI_GUI_EDITOR.
-h_web: Open help in web browser. AFNI will try to find a browser
on your machine. You can control which it should use by
setting environment variable AFNI_GUI_EDITOR.
-skip_afnirc: Do not read the afni resource (like ~/.afnirc) file.
-pad_to_node NODE: Output a full dset from node 0 to MAX_NODE-1
** Instead of directly setting NODE to an integer you
can set NODE to something like:
ld120 (or rd17) which sets NODE to be the maximum
node index on an Icosahedron with -ld 120. See
CreateIcosahedron for details.
d:DSET.niml.dset which sets NODE to the maximum node found
in dataset DSET.niml.dset.
** This option is for surface-based datasets only.
Some programs may not heed it, so check the output if
you are not sure.
-pif SOMETHING: Does absolutely nothing but provide for a convenient
way to tag a process and find it in the output of ps -a
-echo_edu: Echos the entire command line to stdout (without -echo_edu)
for edification purposes
Compile Date:
May 10 2013
Ziad S. Saad SSCC/NIMH/NIH saadz@mail.nih.gov
This page auto-generated on
Sat May 11 16:36:57 EDT 2013