PSYM

The symbol used to mark each data point. Normally, PSYM is 0, data points are connected by lines, and no symbols are drawn to mark the points.

For the web page entry, use IDL array syntax. E.g., for 4 signals, two using diamonds, and two using triagles: 

   [4,4,5,5]

PSYM Value

Plotting Symbol

1

Plus sign (+)

2

Asterisk (*)

3

Period (.)

4

Diamond

5

Triangle

6

Square

7

X

8

User-defined. See USERSYM procedure.

9

Undefined

10

Histogram mode. Horizontal and vertical lines connect the plotted points, as oppose= d to the normal method of connecting points with straight lines.

Negative values of PSYM cause the symbol designated by PSYM to be plotted at each point with solid lines connecting the symbols. For example, a value of -5 plots triangles at each data point and connects the points with lines. To connect symbols with lines, you could use something like -1*[1,2,3,4].