Difference between revisions of "LlListStatistics"
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Omei Qunhua (talk | contribs) (Undo ridiculous and pointless revision) |
m (3 is enough, wonder if I should fix the overflow issue.) |
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list dil_s; | list dil_s; | ||
list fps_s; | list fps_s; | ||
integer ticks; | integer ticks = 0; | ||
default | default | ||
| Line 75: | Line 75: | ||
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 | if(3 <= ++ticks) | ||
{ | { | ||
llSetText( | llSetText( | ||
Revision as of 11:38, 9 August 2014
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: float llListStatistics( integer operation, list src );| 315 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
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. |
Caveats
Examples
<lsl>// shows just how bad SL is behaving and demonstrates the use of llListStatistics() list dil_s; list fps_s; integer ticks = 0;
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
Tests
| • | llListStatistics Test |
Signature |
|---|
function float llListStatistics( integer operation, list src ); |