drawx

drawx is a graphics tool for examining ascii data generated elsewhere. drawx is based on X11 and uses basic xlib commands that make drawx fast, portable, and well suited for examining large volumes of data.
The expected input for drawx is columnar ascii files and optional drawx directives that can influence how the data are viewed (e.g. plot titles, color, symbols or lines, column titles, etc.). Data in each column is separated by white-space that can be SPACE characters, commas, or tabs. drawx keeps track of row and column information that is used later for generating cross-plots or attribute coloring. If a particular data point is masked (described later) then that entire row of data is removed from subsequent displays of the data.
Data are read into drawx and displayed in a window in which the user can manipulate to change the way the data are plotted, to zoom in on areas of interest, and masking of un-wanted data.