Difference between revisions of "LlListStatistics"

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m (added a smalll comment to the example script)
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{{!}} {{#var:comment}}
 
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|examples=
+
|examples=<lsl>// shows just how bad SL is behaving and demonstrates the use of llListStatistics()
<lsl>
+
// shows just how bad SL is behaving and demonstrates the use of llListStatistics()
+
 
list dil_s;
 
list dil_s;
 
list fps_s;
 
list fps_s;
 
integer ticks;
 
integer ticks;
+
 
 
default
 
default
 
{
 
{
    on_rez (integer parm)
 
    {
 
        llResetScript();
 
    }
 
 
    changed(integer change)
 
    {
 
        if(change & CHANGED_REGION)
 
            llResetScript();
 
    }
 
 
 
     state_entry()
 
     state_entry()
 
     {
 
     {
        // set the timer to go off every other second
 
 
         llSetTimerEvent(1.0);
 
         llSetTimerEvent(1.0);
 
     }
 
     }
+
   
 +
    on_rez (integer parm)
 +
    {
 +
        llResetScript();
 +
    }
 +
   
 
     timer()
 
     timer()
 
     {
 
     {
 
         dil_s = llList2List(dil_s + llGetRegionTimeDilation(), -60, -1);
 
         dil_s = llList2List(dil_s + llGetRegionTimeDilation(), -60, -1);
 
         fps_s = llList2List(fps_s + llGetRegionFPS(), -60, -1);
 
         fps_s = llList2List(fps_s + llGetRegionFPS(), -60, -1);
 
+
         if(3 > ++ticks)
         if(++ticks < 3)
+
 
         {
 
         {
 
             llSetText(
 
             llSetText(
                 "Dilation:"
+
                 "Dilation: min="+(string) llListStatistics(LIST_STAT_MIN, dil_s) + ", mean=" +
                + "\nmin = " + (string) llListStatistics(LIST_STAT_MIN, dil_s)
+
                    (string) llListStatistics(LIST_STAT_MEAN, dil_s) + ", max=" +
                + "\nmean = " + (string) llListStatistics(LIST_STAT_MEAN, dil_s)
+
                    (string) llListStatistics(LIST_STAT_MAX, dil_s) + ", std.dev=" +
                + "\nmax = " + (string) llListStatistics(LIST_STAT_MAX, dil_s)
+
                    (string) llListStatistics(LIST_STAT_STD_DEV, dil_s) + "\n" +
                + "\nstd.dev = " + (string) llListStatistics(LIST_STAT_STD_DEV, dil_s)
+
                    "FPS: min="+(string) llListStatistics(LIST_STAT_MIN, fps_s) + ", mean=" +
                + "\nFPS:"
+
                    (string) llListStatistics(LIST_STAT_MEAN, fps_s) + ", max=" +
                + "\nmin = " + (string) llListStatistics(LIST_STAT_MIN, fps_s)
+
                    (string) llListStatistics(LIST_STAT_MAX, fps_s) + ", std.dev=" +
                + "\nmean = " + (string) llListStatistics(LIST_STAT_MEAN, fps_s)
+
                    (string) llListStatistics(LIST_STAT_STD_DEV, fps_s),
                + "\nmax = " + (string) llListStatistics(LIST_STAT_MAX, fps_s)
+
                 <1.0, 1.0, 0.0>, //yellow
                + "\nstd.dev = " + (string) llListStatistics(LIST_STAT_STD_DEV, fps_s),
+
                1.0);
                 <1.0, 1.0, 0.0>, (float)TRUE);// yellow and opaque
+
        }
 +
    }
 +
   
 +
    changed(integer change)
 +
    {
 +
        if(change & CHANGED_REGION)
 +
        {
 +
            llResetScript();
 
         }
 
         }
 
     }
 
     }
}
+
}</lsl>
</lsl>
+
 
|helpers
 
|helpers
 
|also_functions=
 
|also_functions=

Revision as of 13:55, 15 December 2012

Summary

Function: float llListStatistics( integer operation, list src );

Returns a float that is the result of performing statistical aggregate function operation on src.

• integer operation a LIST_STAT_* flag
• list src

If a list entry type is not a float or an integer it is silently ignored.

Constant Description
LIST_STAT_RANGE 0 Calculates the range.
LIST_STAT_MIN 1 Calculates the smallest number.
LIST_STAT_MAX 2 Calculates the largest number.
LIST_STAT_MEAN 3 Calculates the mean (average).
LIST_STAT_MEDIAN 4 Calculates the median number.
LIST_STAT_STD_DEV 5 Calculates the standard deviation.
LIST_STAT_SUM 6 Calculates the sum.
LIST_STAT_SUM_SQUARES 7 Calculates the sum of the squares.
LIST_STAT_NUM_COUNT 8 Determines the number of float and integer elements.
LIST_STAT_GEOMETRIC_MEAN 9 Calculates the geometric mean.

Examples

<lsl>// shows just how bad SL is behaving and demonstrates the use of llListStatistics() list dil_s; list fps_s; integer ticks;

default {

   state_entry()
   {
       llSetTimerEvent(1.0);
   }
   
   on_rez (integer parm)
   {
       llResetScript();
   }
   
   timer()
   {
       dil_s = llList2List(dil_s + llGetRegionTimeDilation(), -60, -1);
       fps_s = llList2List(fps_s + llGetRegionFPS(), -60, -1);
       if(3 > ++ticks)
       {
           llSetText(
               "Dilation: min="+(string) llListStatistics(LIST_STAT_MIN, dil_s) + ", mean=" +
                   (string) llListStatistics(LIST_STAT_MEAN, dil_s) + ", max=" +
                   (string) llListStatistics(LIST_STAT_MAX, dil_s) + ", std.dev=" +
                   (string) llListStatistics(LIST_STAT_STD_DEV, dil_s) + "\n" + 
                   "FPS: min="+(string) llListStatistics(LIST_STAT_MIN, fps_s) + ", mean=" +
                   (string) llListStatistics(LIST_STAT_MEAN, fps_s) + ", max=" +
                   (string) llListStatistics(LIST_STAT_MAX, fps_s) + ", std.dev=" +
                   (string) llListStatistics(LIST_STAT_STD_DEV, fps_s),
               <1.0, 1.0, 0.0>, //yellow
               1.0);
       }
   }
   
   changed(integer change)
   {
       if(change & CHANGED_REGION)
       {
           llResetScript();
       }
   }
}</lsl>

Notes

Given that this operation ignores any non-numbers in a list, it can be used to tell you, in a mixed list, how many of the elements in a list are numbers (when used with the LIST_STAT_NUM_COUNT parameter.)

See Also

Functions

•  llGetListEntryType

Deep Notes

Search JIRA for related Issues

Tests

•  llListStatistics Test

Signature

function float llListStatistics( integer operation, list src );