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- /* Friedman 2-Way ANOVA by Ranks */
-
- options results
- if ~show('P','TCALC') then do
- address command 'run turbocalc:turbocalc'
- address command 'waitforport TCALC'
- loadflag=1
- end
- address 'TCALC'
- 'DEFPUBSCREEN()'
- /* Add-in Rexx Math Library needed for some routines */
- signal on syntax
- if ~show('l','rexxmathlib.library') then
- call addlib('rexxmathlib.library',0,-30)
- if ~show('l','rexxreqtools.library') then
- call addlib('rexxreqtools.library',0,-30)
- if ~show('l','rexxsupport.library') then
- call addlib('rexxsupport.library',0,-30)
- /* add to library list */
- signal off syntax
-
- /* Start Main Routine */
- if loadflag=1 then 'Load()'
- 'ActivateWindow()'
- range=rtgetstring(,"Enter Cell Range for Input","Input Request") /*,,'rt_pubscrname="TCALC"')*/
- colon=pos(":",range)
- if colon=0 then do
- 'Message "Please select a range before executing this script"'
- 'DEFPUBSCREEN("Workbench")'
- exit
- end
-
- /* Find cell references and cell, column numbers */
- start_cell=substr(range,1,colon-1)
- end_cell=substr(range,colon+1)
- start_row=cellrow(start_cell)
- end_row=cellrow(end_cell)
- start_col=cellcol(start_cell)
- end_col=cellcol(end_cell)
- NRows=end_row-start_row+1
- NCols=end_col-start_col+1
-
- /* Get cell reference for output range */
- out_cell=rtgetstring(,"Enter Cell Reference for Output","Input Request") /*,,'rt_pubscrname="TCALC"')*/
- if out_cell="" then do
- 'DEFPUBSCREEN("Workbench")'
- exit
- end
- if length(out_cell)<2 | datatype(left(out_cell,1),'n') then do
- 'Message "Invalid cell reference"'
- 'DEFPUBSCREEN("Workbench")'
- exit
- end
- /* Suppress Screen Redraw to Speed Things Up */
- 'Refresh 0'
-
- /* Open a small output window on tcalc screen*/
- fo=0
- CR='0a'x
- DisplayMsg="Calculating...Please Wait."||CR||"User input is disabled during calculation."||CR
- if open(6Info, 'con:100/0/450/80/Progress/SCREEN TCALC', w) then do
- call writeln(6Info, DisplayMsg)
- fo=1
- end
- else do
- 'Message "TCALC Screen not available for Progress messages"'
- end
- CALL DELAY(150)
-
- /* Get cell references for top cell in each column */
- 'SelectCell' start_cell
- do col=start_col to end_col
- 'GetCursorPos'
- top_cell.col=result
- 'Column 1'
- end
-
- /* Get labels for later use on output */
- 'SelectCell' start_cell
- 'GetValue'
- testlabel=result
- testlabel=strip(testlabel)
- if datatype(testlabel,'n')=1 then do
- labelflag=0
- do x=1 to NCols
- title.x="Column "||x
- end
- end
- else do
- labelflag=1
- NRows=NRows-1
- do x=1 to NCols
- 'GetValue'
- str=result
- title.x=translate(strip(str),"_"," ")
- 'Column 1'
- end
- end
- if fo then call writech(6Info,"Progress...10 ")
-
- /* Get data from cell range */
- col=start_col
- lav=0
- tot=0
- count.=0
- total.=0
- do x=1 to NCols
- 'SelectCell' top_cell.col
- if labelflag=1 then 'CursorDown 1'
- do y=1 to NRows
- 'GetValue'
- valtest=result
- if datatype(valtest)='NUM' then do
- 'GetValue'
- val=result
- data.x.y=val
- count.x=1+count.x
- end
- 'CursorDown 1'
- end
- col=col+1
- val=0
- end
- if fo then call writech(6Info,"20 ")
-
- /* Generate Sorted Rows */
- srow.=0
- Do y=1 to NRows
- Do x=1 to NCols
- srow.x.y=data.x.y
- end
- call Sort()
- end
- if fo then call writech(6Info,"30 ")
-
- /* Calculate Ranks */
-
- Rank.=0
- N=NCols
- Do y=1 to NRows
- Do x=1 to NCols
- z=0
- Do z=1 to N
- if data.x.y=srow.z.y then Do
- cnt=1
- beginrank=z
- avrank=z
- endrank=0
- Do until endrank ~=0
- z=z+1
- if (data.x.y) ~= (srow.z.y) then endrank=z-1
- avrank=avrank+z
- cnt=cnt+1
- end
- val=trunc((avrank/cnt)-.5,2)
- Rank.x.y=val
- Leave z
- end
- end
- end
- end
- if fo then call writech(6Info,"40 ")
- val=0
-
- /* Calculate Sums etc. of Column Ranks */
-
- sumr.=0
- scrsq=0
- Rsq.=0
- sr.=0
- A2=0
- B2=0
- Do x=1 to NCols
- Do y=1 to NRows
- sumr.x=(sumr.x)+(Rank.x.y)
- end
- scrsq=scrsq+(sumr.x)**2
- end
- Do x=1 to NCols
- Do y=1 to NRows
- Rsq.x.y=(Rank.x.y)**2
- sr.x=sr.x+Rsq.x.y
- end
- A2=A2+sr.x
- end
- B2=scrsq/NRows
- if fo then call writech(6Info,"50 ")
-
- /* Calculate Chi-Square
-
- df=0
- temp=0
- Chi=0
- temp=12/((NRows*NCols)*(NCols+1))
- temp=temp*scrsq
- Chi=temp-(3*NRows)*(NCols+1)
- df=NCols-1*/
-
- /* Calculate T2 Statistic */
-
- T2=(NRows-1)*(B2-(NRows*NCols*((NCols+1)**2)/4))
- T2=T2/(A2-B2)
- k1=NCols-1
- k2=(NRows-1)*(NCols-1)
- if fo then call writech(6Info,"60 ")
-
- /* Calculate Chi Probability
- P=CHIPROB(Chi,df)
- */
- /* Calculate Chi Critical
- Chicrit1=CHICRIT(.95,df)
- Chicrit2=CHICRIT(.99,DF)
- */
- /* Calculate F Probability */
-
- AC=.0001
- EC=.005
- EC2=EC+EC
- PF=PROBABILITY(T2,k1,k2)
- PF=1-PF
- if fo then call writech(6Info,"70 ")
-
- /* P=.95 OR .99 */
- FCRIT1=FCRITICAL(.95,k1,k2)
- if fo then call writech(6Info,"80 ")
- FCRIT2=FCRITICAL(.99,k1,k2)
-
- if fo then do
- call writeln(6Info,"100 ")
- call writeln(6Info,"Writing output to window...")
- end
- /* Output */
- 'SelectCell' out_cell
- 'Column 1'
- 'ColumnWidth 15'
- 'Put "Friedman 2-Way ANOVA by Ranks"'
- 'CursorDown 1'
- 'Put "Table of Ranks"'
- 'CursorDown 1'
- Do x=1 to NCols
- title=title.x
- 'Alignment 2'
- 'Put' title
- 'CursorDown 1'
- Do y=1 to NRows
- 'Put' rank.x.y
- 'CursorDown 1'
- end
- 'Put' sumr.x
- 'CursorUp' NRows+1
- 'Column 1'
- end
- 'SelectCell' out_cell
- 'CursorDown' NRows+3
- 'Put "Sum of Ranks:"'
- 'CursorDown 1'
- /*'Put "Chi-Square:"'
- 'CursorDown 1'
- 'Put "d.f. (v):"'
- 'CursorDown 1'
- 'Put "P(CHI<=chi):"'
- 'CursorDown 1'
- 'Put "Chi-Critical (95%):"'
- 'CursorDown 1'
- 'Put "Chi-Critical (99%):"'*/
- /* Put F stuff here */
- 'CursorDown 1'
- 'Put "Friedman T:"'
- 'CursorDown 1'
- 'Put "P(F<=T):"'
- 'CursorDown 1'
- 'Put "F Critical (95%):"'
- 'CursorDown 1'
- 'Put "F Critical (99%):"'
- 'CursorUp 3'
- 'Column 1'
- /*'Put' format(Chi,,4)
- 'CursorDown 1'
- 'Put' df
- 'CursorDown 1'
- 'Put' format(P,,6)
- 'CursorDown 1'
- 'Put' format(ChiCrit1,,4)
- 'CursorDown 1'
- 'Put' format(ChiCrit2,,4)
- 'CursorDown 1'*/
- 'Put' format(T2,,4)
- 'CursorDown 1'
- 'Put' format(PF,,6)
- 'CursorDown 1'
- 'Put' format(FCRIT1,,4)
- 'CursorDown 1'
- 'Put' format(FCRIT2,,4)
- 'Refresh 1'
- 'Refresh 2'
- /*'Message' "Finished"*/
- /*indicate the main script is finished*/
- DisplayMsg="Cleaning up ...."||CR||"Exiting"
- result=writeln(6Info, DisplayMsg)
- if result~=0 then do
- /*Wait 3 seconds*/
- CALL DELAY(150)
- /* close window*/
- result=close(6Info)
- end
- 'DEFPUBSCREEN("Workbench")'
- exit
-
- /* Procedures */
-
- cellrow: procedure
- do
- parse arg cell
- do charpos=2 to length(cell)
- if datatype(substr(cell,charpos,1),n) then return substr(cell,charpos)
- end
- return 0
- end
- Return
-
- cellcol: procedure
- do
- parse arg cell
- labels="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- cell=upper(cell)
- len=length(cell)
- val=0
- do charpos=1 to len
- if datatype(substr(cell,charpos,1),n) then
- do cell=reverse(substr(cell,1,charpos-1))
- do x=1 to length(cell)
- val=(26**(x-1))*pos(substr(cell,x,1),labels)+val
- end
- return val
- end
- end
- return 0
- end
- Return
-
- /* It is important to put the exposed array at the end of the next line */
- Sort: procedure expose y NCols srow.
- p=y
- L=(xtoy(2,int(log(NCols)/log(2))))-1
- Do Until L<1
- L=trunc(int(L/2))
- Do J=1 to L
- Do K=J+L To NCols By L
- I=K
- dumdat=srow.I.p
- Do while I>L
- x=I-L
- If srow.x.p ~> dumdat then Leave
- srow.I.p=srow.x.p
- I=I-L
- End
- srow.I.p=dumdat
- End
- End
- End
- Return
-
-
- syntax:
- if arg(1)='FAIL' then do
- 'Message "Library is unavailable."'
- 'DEFPUBSCREEN("Workbench")'
- exit
- end
- 'DEFPUBSCREEN("Workbench")'
- exit
-
- CHIPROB: PROCEDURE
-
- PARSE ARG X2,K1
- X3=0.5*X2
- K3=0.5*K1
- X=K3+1
- LG=LOGGAMMA(X)
- S=0
- A=EXP(K3*LN(X3)-LG-X3)
- IF A~=0 THEN DO
- T=1
- S=1
- G=K3
- DO WHILE (T/S) >.000001
- G=G+1
- T=T*X3/G
- S=S+T
- END
- END
- PO=S*A
- RETURN PO
-
- CHICRIT: PROCEDURE
-
- PARSE ARG PO,K1
- AO=.0001
- E=.005
- E2=E+E
- PA=PO
- SELECT
- WHEN K1=1 THEN DO
- PO=.5+PA/2
- Z=NORMALPP(PO)
- X1=Z*Z
- END
- WHEN K1=2 THEN DO
- X1=1-PA
- X1=-2*LN(X1)
- END
- OTHERWISE
- Z=NORMALPP(PO)
- A1=2/(9*K1)
- W=1-A1+Z*SQRT(A1)
- XO=K1*(W**3)
- DO FOREVER
- X2=XO
- PO=CHIPROB(X2,K1)
- F1=PO-PA
- X2=XO+E
- PO=CHIPROB(X2,K1)
- F2=PO
- X2=XO-E
- PO=CHIPROB(X2,K1)
- F2=F2-PO
- F2=F2/E2
- X1=XO-F1/F2
- IF ABS(X1-XO)>AO THEN XO=X1
- ELSE LEAVE
- END
- END
- X2=X1
- RETURN X2
-
- LOGGAMMA: PROCEDURE
-
- ARG XA
- C1=76.18009173
- C2=-86.50532033
- C3=24.01409822
- C4=-1.231739516
- C5=.001208580
- C6=-.000005364
- C7=2.506628275
- X1=XA-1
- W=X1+5.5
- W=(X1+.5)*LN(W)-W
- S=1+C1/(X1+1)+C2/(X1+2)+C3/(X1+3)
- S=S+C4/(X1+4)+C5/(X1+5)+C6/(X1+6)
- L=W+LN(C7*S)
- RETURN L
-
- NORMALPP: PROCEDURE
-
- ARG P0
- A1=2.515517
- A2=.802853
- A3=.010328
- A4=1.432788
- A5=.189269
- A6=.001308
- Q=.5-ABS(P0-.5)
- SN=SIGN(-2*LN(Q))
- IF SN=-1 THEN W=-1*SQRT(ABS(-2*LN(Q))
- ELSE W=SQRT(-2*LN(Q))
- W1=A1+W*(A2+A3*W)
- W2=1+W*(A4+W*(A5+A6*W))
- ZZ=W-W1/W2
- SELECT
- WHEN (P0-.5)<0 THEN TT=-1
- WHEN (P0-.5)=0 THEN TT=0
- otherwise TT=1
- END
- ZZ=ZZ*TT
- RETURN ZZ
-
- FCRITICAL: PROCEDURE EXPOSE AC EC EC2
-
- PARSE ARG PO,K1,K2
- /* fIND NORMAL Z CORRESPONDING TO P */
- P1=PO
- Z=NORMALPP(PO)
- IF K2<3 THEN DO
- W=K2**.75
- W=Z/W
- Z=Z*(1.1581-W*(.2296+W*(.0042+.0027*W)))
- END
- /* FIND INITIAL APPROX. TO F */
- A1=2/(9*K1)
- A2=2/(9*K2)
- W=Z*Z
- W1=1+A2*(A2-W-2)
- W2=A1+A2-A1*A2-1
- W3=1+A1*(A1-W-2)
- SN=SIGN(W2*W2-W1*W3)
- IF SN=-1 THEN W3=-1*SQRT(ABS(W2*W2-W1*W3))
- ELSE W3=SQRT(W2*W2-W1*W3)
- FO=(W3-W2)/W1
- FO=FO**3
- /* MODIFIED NEWTON ITERATION TO IMPROVE VALUE OF F */
- DO FOREVER
- FCRIT=FO
- PO=PROBABILITY(FCRIT,K1,K2)
- F1=PO-P1
- FCRIT=FO+EC
- PO=PROBABILITY(FCRIT,K1,K2)
- F2=PO
- FCRIT=FO-EC
- PO=PROBABILITY(FCRIT,K1,K2)
- F2=F2-PO
- F2=F2/EC2
- F1=FO-F1/F2
- IF ABS(F1-FO)>AC THEN FO=F1
- ELSE LEAVE
- END
- FCRIT=F1
- RETURN FCRIT
-
- PROBABILITY: PROCEDURE EXPOSE AC EC EC2
-
- PARSE ARG F,K1,K2
- IF K1=1 THEN AC=.00001
- H2=K2/2
- H1=K1/2
- H3=H1+H2
- L1=0
- XX=H1
- LG=LOGGAMMA(XX)
- L1=L1+LG
- XX=H2
- LG=LOGGAMMA(XX)
- L1=L1+LG
- XX=H3
- LG=LOGGAMMA(XX)
- L1=L1-LG
- W1=K2/(K2+K1*F)
- XX=0
- IF H2<(H3*W1) THEN DO
- W2=W1
- W1=1-W1
- W3=H2
- H2=H1
- H1=W3
- END
- ELSE DO
- W2=1-W1
- XX=1
- END
- T1=1
- W3=1
- P=1
- I=INT(H1+W2*H3)
- W4=W1/W2
- /*LABELB:*/
- T2=H1-W3
- IF I=0 THEN W4=W1
- /*LABELC:*/
- DO FOREVER
- T1=T1*T2*W4/(H2+W3)
- P=P+T1
- T2=ABS(T1)
- IF (T2<=AC) & (T2<=AC*P) THEN LEAVE /*SIGNAL 'LABELD'*/
- W3=W3+1
- I=I-1
- IF I>=0 THEN DO /*SIGNAL 'LABELB'*/
- T2=H1-W3
- IF I=0 THEN W4=W1
- ITERATE
- END
- T2=H3
- H3=H3+1
- /*SIGNAL 'LABELC'*/
- END
- /*LABELD:*/
- W1=EXP(H2*LN(W1)+(H1-1)*LN(W2)-L1)
- P=P*W1/H2
- IF XX=0 THEN PO=P
- ELSE PO=1-P
- AC=.001
- RETURN PO
-
- Format: procedure
-
- arg number, before, after
- CallLine = SIGL
- if ~datatype(CallLine, 'N') then CallLine = '??'
-
- /* Make sure we have a number as first (required) argument */
- if ~datatype(number, 'N') then do
- if number = '' then
- fc = 17 /* Wrong number of arguments */
- else
- fc = 47 /* Arithmetic conversion error */
- signal FormatSyntaxError
- end
- num = number + 0
- if before = '' & after = '' then
- return num
- else do
- parse var num integer '.' fraction
- if before = '' then before = length(integer)
- if after = '' then after = length(fraction)
- if ~datatype(before, N) | ~datatype(after, N) then
- do fc = 18
- signal FormatSyntaxError
- end
- if before < length(integer) then do
- fc = 18
- signal FormatSyntaxError
- end
- if after ~= length(fraction) then do
- fraction = trunc(('.'fraction'0') + ('.'copies('0', after)'5'), after)
- if integer<1&integer>-1 then integer=integer
- else integer = integer + (fraction % 1)
- fraction = substr(fraction, 3)
- end
- if fraction >= 0 then
- return right(integer, before)'.'fraction
- else
- return right(integer, before)
- end
-
- FormatSyntaxError:
- if show('F', STDERR) then
- call writeln(STDERR, '+++ Error' fc 'in line' CallLine':' errortext(fc))
- else
- mess='+++ Error' fc 'in line' CallLine':' errortext(fc)
- 'Message' mess
- parse source Func .
- if Func = 'FUNCTION' then do
- 'DEFPUBSCREEN("Workbench")'
- exit "Err"
- end
- else do
- 'DEFPUBSCREEN("Workbench")'
- exit 10
- end
-