sfslice extracts a slice from the data given by a curve (in 2-D) or a surface (in 3-D).

The right plot in the following example from gee/prc/bob shows the semblance extracted using sfslice from the semblance scan along the trajectory picked with sfpick.

sfslice does not have parameters other than pick=, which points to the file with the surface for extraction.

It performs a simple linear interpolation to extract the values.

10 previous programs of the month:

• sfzomig3
• sfseislet
• sfmig2
• sfsort
• sfdivn
• sfpldb and sfplas
• sfisolr2
• sfsimilarity
• sfmutter
• sfintbin

sfbargraph is a new plotting program for displaying data as bars.

The bottom plot in the figure below shows a simple example from rsf/rsf/sfnoise.

The unique parameters of sfbargraph include width= for controling the relative width of the bars and stack= to control if the bars from multiple input traces should be stacked on top of one another.

The other parameters are shared with other plotting programs.