Postf
The program postf displays slices through a static or dynamic volume
of images. It will read data from both minc and mni format files,
automatically detecting the file type. If no file name is given,
then raw single-precision floating point values are read from standard
input. To obtain information on command-line arguments, invoke postf
with the -help option.
Postf does not have a conventional user-interface.
Instead, operations are invoked by simple key presses and
mouse motion. These commands are described below. Note that there are
two areas of the window that can behave slightly differently: the
image area and the colour-bar area - these differences are noted in
the command descriptions.
Mouse motion :
- Left button :
- in image : evaluate (and move) current pixel.
- in colour bar : move top of colour bar.
- Middle button :
- in image : move whole image in viewport.
- in colour bar : move top and bottom of colour bar together.
- Right button :
- in colour bar : move bottom of colour bar.
- Left and right buttons:
- in image : print out time activity curve for current pixel on stdout
(only works when time activity pop-up is displayed).
Control key : Evaluate current pixel (see arrow keys).
Alternate key: Change size of pixel evaluation area or ROI (see arrow keys).
Arrow keys :
- right : Move to next frame, same slice.
- left : Move to previous frame, same slice.
- up : Move to next slice, same frame.
- down : Move to previous slice, same frame.
- with shift key down : Move through images without redrawing.
- with control key down : Move current pixel by one.
- with control and shift keys down : Move current pixel by four.
- with alternate key down: increase or decrease ROI evaluation area.
Keyboard (unless otherwise noted, case is irrelevant):
- <ESC> : Exit program.
- q : Exit program.
- g : Set colour bar to gray-scale.
- h : Set colour bar to hot-metal.
- s : Set colour bar to spectral.
- r : Reset colour bar values.
- R : Reset image position and size.
- p : Pop up a window displaying x and y (and z) activity profiles
through the current pixel.
- d : Pop up a window displaying a graph of activity versus time for
the current pixel.
- x : Toggle display of x activity profile.
- y : Toggle display of y activity profile.
- z : Toggle display of z activity profile.
- m : Locate image containing maximum value
(mni and float data only).
- M : Locate image containing minimum value
(mni and float data only).
- - : Zoom out from image.
- + : Zoom in to image.
- space : Print out time activity curve for current pixel on stdout
(only works when time activity pop-up is displayed and control
key or left mouse button are down).
OPTIONS
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Command-specific options:
-title: Window title
-mni: File is an mni file
-debug: Output minc file information
-noprogress: Do not show progress during minc image input
-cindex: Minimum and Maximum lookup table indices
Default value: 64 255
-frames: Number of data frames
Default value: 1
-frame: Frame to be displayed
Default value: 0
-rframes: First and last frames to be read
Default value: 0 0
-slices: Number of data slices
Default value: 1
-slice: Slice to be displayed
Default value: 0
-rslices: First and last slices to be read
Default value: 0 0
-width: Image width
Default value: 128
-height: Image height
Default value: 128
-roi_radius: ROI Size
Default value: 0
-foreground: Stay in foreground
-dynamic: Time info available within float data
-images: Number of images
Default value: 1
-spectral: Use spectral scale
-hotmetal: Use hotmetal scale
-grayscale: Use gray scale
-icon: Use special premade icon (user selected or default)
-describe: Print out a description of the postf interface.
Generic options for all commands:
-help: Print summary of command-line options and abort
Usage: postf [option [...]] [filename]
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