SATAN Help
HANDLING AND PLOTTING OF TWO-DIMENSIONAL DATA:
GENERAL:
SATAN provides the possibility to handle two-dimensional data
arrays given in GRAF format, as pseudoanalyzers or as
analyzers. Only one 2-dim array in
GRAF format may be given in a dataset. Please use GOVER
for drawing more than one 2-dim array in one picture. In a 2-dim plot, the data are
n o t shifted by 1/2 channel in x- and y-direction, as in the original SATAN. The
limits of the picture (xmin,xmax,ymin,ymax) are rounded to be integers of the 2-dim grid given by the channel limits.
HEADER-LINE:
The header line must have the following form:
==> H2: (X = 10 TO 12 BY .2) (Y =
0 TO 1 BY .1) Z
The free-formatted numbers written below this header line in the
dataset are interpreted as an array according to the loop structure in PLI. (The second
variable (in this case Y) increases faster than the first one (in the example X).) The
axes may be interchanged:
==> H2: (Y = 0 TO 1 BY .1) (X = 10
TO 12 BY .2) Z
LINEAR CALIBRATION:
The x and y values may be calibrated by a linear function:
==> H2: (X = 0 TO 1 BY .1)*0.2-100
(Y = 10 TO 12 BY .2) Z
means that the x values are multiplied by 0.2 and then shifted by
100 units (allowed operators are + - * /).
BOUNDARY:
A boundary for the contour or isometric plot can be defined by a
polygon (data specification "B" for 1-dim data). Data points outside this
boundary are not shown.
==> H: X B,N0
==> 0,0;50,0;60,10;60,60;25,60;
CONTOUR PLOT:
The number of cuts is specified by the parameter NCUT(n).
Alternatively, the cuts of the contour plot may explicitly be specified in the dataset
==> P: CUTS(10 TO 100 BY 10).
Optionally, the linemode and the linewidth (in mm) may be given
(eventually different values for different cuts):
==> P: CUTS(10 TO 100 BY 10;D,1)
CUTS(50,100,200;L,2)
==> P: CUTS(1,2,4,8,16;B,.5)
As an additional option, the automatic labeling of the cuts can
be chosen:
==> P: CUTS(2,4,8;L,.2,LABEL) or
==> P: CUTS(2,4,8;L,.2,NOLABEL)
The limits ZMIN and ZMAX may be specified in the dataset. As a
default option, 6 equidistant colored cuts are drawn.
CLUSTER PLOT:
The size of the points in the cluster mode is proportional to the
value of Z-ZMIN, or if ZLOG is specified, to the
logarithm of Z/ZMIN:
==> P: ZMIN(1) ZMAX(1000) ZLOG
If the parameter ZAREA is specified, the area of the points is
proportional to the value of Z-ZMIN (or with ZLOG to the logarithm of Z/ZMIN):
==> P: ZMIN(0) ZMAX(10) ZAREA
The handling of colors may be specified:
==> P: 2DCOL(option) with option = MULTI, R, G, RB, D, ...
Full-area clusters are selected by the additional keyword FULL:
==> P: 2DCOL(R,FULL)
The default option is P: 2DCOL(MULTI).
Selected clusters can be drawn on the picture together with a
scaling information as a legend by specifying the following kind of commands in the
dataset:
==> L: ZSCALING(0.1,100 mb)
==> L: ZSCALING(1 , 1
b)
==> L: ZSCALING(10 , 10 b)
"L" stands for "label". The blanks in the
brackets serve to align
the text.
Per default, the legend will appear at the right border of the
figure.
To position the legend in units relative to the axes use:
==> L: XREL(R) YREL(R)
As a default, the sizes of the clusters in the legend
are equal to the sizes of the corresponding clusters in
the spectrum. As an alternative, uniformely large clusters can be drawn in the
legend when specifying "FULLCLUSTERS" in addition to ZSCALING:
==> L: ZSCALING(1, 1 b) FULLCLUSTERS
ISOMETRIC PLOT:
The representation of the isometric plot is prompted. It is
limited to 256 points in each direction. (The number of points may be decreased by
increasing the binsize.)
2-DIM FIT:
If the data are provided in form of a 2-dimensional analyzer, a
ridge line can be fitted to the data by the command ARIDGE.
(A less comfortable fit option to 2-dim data is also available. It fits a
polynomial to a
ridge in a 2-dimensional array. See HELP FITGEN.)
