A plugin to graph the pixel values along a straight line bisecting a cube.
Plugin Type: Local
LineProfile is a local plugin, which means it is associated with a
channel. An instance can be opened for each channel.
There are no restrictions to what axes can be chosen. As such, the plot can be meaningless.
LineProfile plugin is used for multidimensional (i.e., 3D or higher)
images. It plots the values of the pixels at the current cursor
position through the selected axis; or if a region is selected, it plots the
mean in each frame. This can be used to create normal spectral line profiles.
A marker is placed at the data point of the currently displayed frame.
Displayed X-axis is constructed using
CUNIT* keywords from FITS header. If any of the keywords
are unavailabled, the axis falls back to
NAXIS* values instead.
Displayed Y-axis is constructed using
BUNIT. If they are not
available, it simply labels pixel values as “Signal”.
To use this plugin:
Select an axis.
Pick a point or draw a region using the cursor.
MultiDimto change step values of axes, if applicable.
It is customizable using
is your HOME directory:
# LineProfile plugin preferences file
# Place this in file under ~/.ginga with the name "plugin_LineProfile.cfg"
# Default mark type. This can be change in the GUI.
mark_type = 'point'
# Properties of a point mark type. Radius can be change in Edit mode.
mark_radius = 10
# Mark color.
mark_color = 'cyan'