R: multiple line chart via ChartBuilder

[Luca Meyer]

Hello Tanya,

I think your file needs restructuring before it can be plotted the
multiple line chart. Here is a tested (SPSS 15) example assuming two
variables (V1 & V2) containing the data and one variable (CASEID)
identifying the cases:

/*** first some sample data ***/
DATA LIST FREE /CASEID V1 V2.
BEGIN DATA
1 10 20
2 15 25
3 20 40
4 15 20
5 10 5
END DATA.
EXE.

/*** then I obtain a file long-and-narrow from a short-and-wide ***/
VARSTOCASES /ID = CASEID1
 /MAKE Observations FROM V1 V2
 /INDEX = Variables(2)
 /KEEP =  CASEID
 /NULL = KEEP.

/*** finally the chart builder syntax ***/
GGRAPH
  /GRAPHDATASET NAME="graphdataset" VARIABLES=CASEID Observations
Variables
  MISSING=LISTWISE REPORTMISSING=NO
  /GRAPHSPEC SOURCE=INLINE.
BEGIN GPL
 SOURCE: s=userSource(id("graphdataset"))
 DATA: CASEID=col(source(s), name("CASEID"), unit.category())
 DATA: Observations=col(source(s), name("Observations"), unit.
category())
 DATA: Variables=col(source(s), name("Variables"), unit.category())
 GUIDE: axis(dim(1), label("CASEID"))
 GUIDE: axis(dim(2), label("Observations"))
 GUIDE: legend(aesthetic(aesthetic.color.interior), label
("Variables"))
 SCALE: cat(dim(1))
 SCALE: cat(dim(2))
 SCALE: cat(aesthetic(aesthetic.color.interior))
 ELEMENT: line(position(CASEID*Observations), color.interior
(Variables), missing.wings())
END GPL.

HTH,
Luca

Mr. Luca MEYER
Market research, data analysis & more
www.lucameyer.com - Tel: [phone]


-----Messaggio originale-----
Da: SPSSX(r) Discussion [mailto:[hidden email]] Per conto di
Tanya Temkin
Inviato: mercoledì 12 settembre 2007 0.14
A: [hidden email]
Oggetto: multiple line chart via ChartBuilder

I'm using ChartBuilder for the 1st time (first time in two years of
SPSS I've had to use it!!) to build a line chart. Maybe I'm missing
something after reading the usual references, but I can't figure out
how to build a chart with two separate lines. Where do I specify the
variable whose two values are to be represented on each of the two
lines? I can't find this when I opt for the "multiple lines"  format.

Thanks for the push in the right direction...

Tanya

Tanya Temkin
Research Associate
AACC Reporting
Northern California Regional Office
The Permanente Medical Group
[phone]
TIE 8-428-6680


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