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Smart random quick plot

For stem plot, Smath quick plot needs some carriage return to rest position '0'. This is what 'replicate(P,v)' does in the X direction. The Y direction is coded accordingly 'Yrnd'. The "plottable" V is truncated of the two first positions. The system adjusts itself on 'n = length of random'. Anywhere you click on active code: press F9 to regenerate.

n rnd n random :

x datum 0 :

n 100 :

<= length of random

mixed : rnd  &  Random x myrnd j 1 x range rn j el j rnd j / 0.5 - : rn 1 el 1 Random 1 el 0.5 - : idx j el j : 31 line for idx rn augment 21 line :

rnd n myrnd 2 col :

iii 1 rnd rows range P iii el 3 : P rnd rows el 2 : 21 line for

Core component of the stem style P v replicate k 1 : i 1 v length range P i el 1 ≡ continue j 1 P i el range T k j + el v i el : for k k P i el + : 21 line if for T 31 line :

ii 1 rnd rows range v ii el ii : for

u P v replicate :

i 1 v length range Yrnd 3 i * el rnd i el : for

V u Yrnd augment :

V V 3 V rows 12 submatrix :

Random stem style ... extensible at will.

V x datum 2 1 sys

The overall coding is left open "edu style" to see what's going on in modular steps.

jmGiraud: 2015/09/12