SEISPL allows for plotting data in the special formats often used in seismic data processing using log and/or linear axis scaling. Appropriate axes and plot titles may be included. The plotting format may be selected by the value of ntype. Possible plotting formats include: multiple "shaded" waveforms, connected lines, vertical line plots, etc. Each line may be offset from the previous line by a specified value for presentation on the plot (z array). A line may be added to indicate the zero value, etc. If nl=1 then the x and y arrays may be 1d arrays.
CALL SEISPL(x,y,z,nld,npd,nl,np,iflag,ntype,size,zref,xl,yl,
xt,nxt,yt,nyt,t,nt,<xm,xx,ym,yx<,ic>>)
x (R): array of x values dimensioned x(npd)
y (R): array of y values dimensioned y(npd,nld)
z (R): array of y-offset values dimensioned z(nl). Y value is
offset by the z value before plotting. When using log
plotting note that offset occurs after taking logs.
nld (I): dimension of y array
npd (I): dimension of x,y arrays
nl (I): number of lines plotted (if nl=1, x,y may be 1d arrays)
np (I): number of data points to plot per line
iflag (I): option flag
< 0 : do not close LONGLIB after plotting
= 0 : close LONGLIB--no plot produced
> 0 : close LONGLIB after plotting
(magnitude) > 10000 : do not initialize LONGLIB before plotting
(1's digit) = 1 : plot x linear, y logarithmic (base 10)
= 2 : plot x logarithmic, y linear
= 3 : plot x logarithmic, y logarithmic
= 4 : plot x linear, y linear
(10's digit) = 0 : no axes or title plotted
= 1 : axes with axis line/ticks on top and sides
= 2 : plot solid cartesian grid
= 3 : plot ticked cartesian grid without box
= 4 : plot ticked cartesian grid with box
= 5 : plot ticked cartesian grid, box w/axis ticks
= 6 : plot without box or cartesian grid
= 7 : plot solid logarithmic grid
= 8 : plot dotted logarithmic grid
= 9 : plot ticked logarithmic grid
(100's) = 0 : Ask which screen device to use
<> 0 : Screen Device Number (see FRAME)
ntype (I): plot format control
< 0 : line with zref plotted
= 0 : symbols only
> 0 : line without zref plotted
(magnitude) = 1 : symbols only plotted
= 2 : points only plotted
= 3 : connected points plotted
= 4 : vertical lines from points to zref line plotted
= 5 : vertical lines plus symbol at point plotted
= 6 : vertical lines and connected points plotted
= 7 : connected points and lines on + side of zref
= 8 : connected points and lines on - side of zref
= 9 : area between connected points and zref filled
= 10 : positive area filled
= 11 : negative area filled
size (R): size of symbols (ntype : 0,1,4)
spacing between area fill lines (ntype : 9,10,11)
< 0 : indicates center line to be dotted
> 0 : indicates center line solid (if plotted)
zref (R): offset added to all z values
xl (R): x axis length in inches
< 0 : use input scaling in xm,xx
> 0 : use auto scaling computed from input array
yl (R): y axis length in inches
< 0 : use input scaling in ym,yx
> 0 : use auto scaling computed from input array
xt (C): x axis title string
nxt (I): number of characters in xt
< 0 : axis ticks on top of x axis
= 0 : no axis
> 0 : axis ticks on bottom of x axis (normal)
yt (C): y axis title string
nyt (I): number of characters in yt
< 0 : axis ticks on right of y axis
= 0 : no axis
> 0 : axis ticks on left of y axis (normal)
t (C): plot title string
nt (I): number of characters in t
< 0 : use color array
= 0 : no title
> 0 : do not use color array
xm (R): minimum value of x array (accessed if xl or nt < 0)
xx (R): maximum value of x array (accessed if xl or nt < 0)
ym (R): minimum value of y array (accessed if xl,yl or nt<0)
yx (R): maximum value of y array (accessed if xl,yl or nt<0)
(NOTE: color array accessed if nt < 0)
ic (I): color array
ic(1) : color for grid
ic(2) : color for axis lines
ic(3) : color for axis numbers
ic(4) : color for axis titles
ic(5) : color for axis exponents
ic(6) : color for title (return)
ic(7) : color for plotted line 1
ic(8) : color for plotted line 2
ic(9) : etc.
common /cseispl/xmr,dxr,ymr,dyr
xmr (R): returned value of xmin
dxr (R): returned value of scale factor (xmax-xmin)/xlen
ymr (R): returned value of ymin
dyr (R): returned value of scale factor (ymax-ymin)/ylen