#1 Dual-line (X-Y), filled between lines.

[Anonymous]

I want to plot two sets of bathymetric data
(pre-dredging and post-dredging) on the same axes and
fill the area between the two lines (the material to be
removed) with a slanted line pattern. Having re-read
the manual this afternoon, I still don't see how to do
this.

I suppose that I plot the two lines by opening, reading
and drawing the curves for two data files while in the
same portion of the command file. But, I've no idea how
to fill the area between the two.

Pointers to the docs, an example file, or explicit
instructions greatly appreciated.

Many thanks,

Rich

[Peter S Galbraith]

Logged In: YES
user_id=31877

You can't do a slanted line pattern, I don't think.

But you could do:

read columns x y
0 0
1 1
2 1
3 2
4 0

set y axis decreasing
draw axes
set color red
draw curve filled to 0 y

read columns x y
0 0
1 .75
2 .80
3 1.2
4 0

set color white
draw curve filled to 0 y