AVS Modules                                            ucd statistics (1)

NAME	
	ucd statistics - generate statistics for ucd data

SUMMARY
     Name          ucd statistics

     Type          renderer 

     Inputs        ucd

     Outputs       formatted numerical text to standard-output

     Parameters    Statistics

AUTHOR INFO:    Anonymous g69d
		4/05/95

DESCRIPTION:
    Ucd statistics is a diagnostic and analysis module, similar to the
field module statistics, used to obtain statistical information about field 
data.  This module scans the data in the volume, and produces a small table,
sent to a scrollable text window in the module control panel. The table 
contains the statistics for each data component calculated separately. Then
if there was more than one component, the table contains the statistics for
all of the data components grouped together.   

It will create statistics for both node and cell data.  It will also generate
overall statistics for node data and cell data separately.  

The 'send to stdout' toggle will send a copy of the report to the window
where AVS was started. 

A typical table looks like:

UCD Statistics
===================
Number of Nodes: 3751
Number of Cells: 3000
Number of Node Components:  1
Total Data Values per Node:  3
Number of Cell Components:  4
Total Data Values per Cell:  4
 
Node Data Value #1
displacement, vector component #1
Min/Max:       -6.54100e-07  6.54080e-07
Average:       -9.52102e-12
Standard Dev.:  3.27728e-07
Skewness:      -1.40070e-06
Kurtosis:      -0.776593
   
Node Data Value #2
displacement, vector component #2
Min/Max:       -5.02990e-06  0.00000
Average:       -2.28593e-06
Standard Dev.:  1.23686e-06
Skewness:      -0.124021
Kurtosis:      -0.601938
   
Node Data Value #3
displacement, vector component #3
Min/Max:       -4.33450e-07  4.33460e-07
Average:        1.08399e-12
Standard Dev.:  1.03484e-07
Skewness:       1.20997e-05
Kurtosis:       2.06968
   
   
All Node Data Values
Min/Max:       -5.02990e-06  6.54080e-07
Average:       -7.61979e-07
Standard Dev.:  1.30787e-06
Skewness:      -1.43210
Kurtosis:       0.971415
 
===================
  
Cell Data Value #1
energy
Min/Max:        2.00338e-08  4.04930e-06
Average:        9.67435e-07
Standard Dev.:  6.52908e-07
Skewness:       0.484155
Kurtosis:       0.211476
   
Cell Data Value #2
stressXX
Min/Max:       -2.46300e+07  7.44400e+06
Average:       -1.57077e+06
Standard Dev.:  6.47675e+06
Skewness:      -1.39856
Kurtosis:       2.18579
   
Cell Data Value #3
stressYY
Min/Max:       -5.29400e+07 -2.34900e+06
Average:       -2.21284e+07
Standard Dev.:  1.13621e+07
Skewness:       0.0390466
Kurtosis:      -0.977080
   
Cell Data Value #4
stressZZ
Min/Max:       -1.61700e+07  3.17200e+06
Average:       -618981.
Standard Dev.:  2.24793e+06
Skewness:      -3.96862
Kurtosis:       17.3605
   
All Cell Data Values
Min/Max:       -5.29400e+07  2.00100e+07
Average:       -1.87063e+06
Standard Dev.:  7.05320e+06
Skewness:      -3.56631
Kurtosis:       13.3841


This table was generated from the following network:

	READ UCD  
	     |
      UCD STATISTICS

The following stats are provided:
MIN/MAX:	the lowest and highest values in the data set.
MEAN:		the average of the data.
STANDARD DEVIATION: the square root of the sum of the squares of the
	        deviations.

The next two values, Skewness and Kurtosis, are values derived from
comparing the distribution of the values to an ideal Gaussian
distribution.

Skewness:	when positive, the right side of the distribution
		curve is "steeper" than the left, when negative, its
		the opposite.
Kurtosis:	when positive, the data is considered more "spikey",
		when negative, the data is considered to be more
		broadly distributed.

SEE ALSO:	statistics