Here are both an explicit and tacit version of a stem and leaf plot verb I contributed to RosettaCode. http://rosettacode.org/wiki/Stem-and-leaf_plot#J On Mar 13, 2013 5:46 PM, "Kip Murray" <[email protected]> wrote:
> Here is strength of materials data taken from a textbook. > > data =: 33190 32320 23040 24050 > data =: data, 31860 33020 30930 30170 > data =: data, 32590 32030 32720 31300 > data =: data, 26520 30460 33650 28730 > data =: data, 33280 32700 32340 31920 > > And here is a "stemplot" of the data > > 2 stemplot data > 23 0 > 24 0 > 25 > 26 5 > 27 > 28 7 > 29 > 30 1 4 9 > 31 3 8 9 > 32 0 3 3 5 7 7 > 33 0 1 2 6 > > This is a "histogram" in which the first two data digits are labels and > third digits form the bars of the histogram. The last line, beginning 33, > means there are data values beginning with 330 , 331, 332, and 336. The > plot was originally called "stem and leaf" -- "stem" is the two-digit > column and "leaves" are the individual third digits. > > Your mission, should you decide to accept it, is to write verb stemplot. > Above, 2 stemplot data means trim two digits from the data (that's what > the 2 is for), then produce the character array shown. Assume non-negative > integer data. What does your verb do with > > _1 stemplot 2 1 4 2 6 > > ? > > --Kip Murray > ------------------------------**------------------------------**---------- > For information about J forums see > http://www.jsoftware.com/**forums.htm<http://www.jsoftware.com/forums.htm> > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
