search for: hammour

...eadsheet "*.xls", but some columns were returned as zeros. When I looked at these columns in Excel, I found that thery are results of formula calculations and not entry. My question is: Is there any parameter or command I need to use in order to overcome this problem? Thank you Ahmad Abu Hammour -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat....

Full_Name: Ahmad Abu Hammour Version: rw0651 OS: windows 95 Submission from: (NULL) (63.23.128.44) Although I know that "ts package" is preliminary, I wanted to compare the results from R and SPSS. I ran ARIMA(2,1,2) in both softwares. I got NaN in standard errors of coefficients from R and real figures from SPSS....

...difference is quite significant. function "dwtest" in "lmtest" is much faster than "burbinwatson" in "car". Actually, you can take a nap while the latter trying to calculated Durbin-Watson test. My question is which p-value is better? Thank you, Ahmad Abu Hammour -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch/pipermail/r-help/attachments/20020419/274907c1/attachment.html

Hi, Is there a function in any of R-packages that can produce and plot the impulse response function for any model.. Thank you Ahmad Abu Hammour -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat...

...of vnamesj on vnamesi". Without the function "expression" title for j=1 and i=2 appears as "Effect of pi on y". The desired outcome would be return the word "pi" rather than a Greek letter. Is there any simple way to overcome this situation. Thank you Ahmad Abu Hammour -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat....

...m(A,myfn) Another question regarding optimization: is there any chance that I can find a function or package that can do a constrained optimization such as: -det(x-A*x1-B*x2)' (x-A*x1-B*x2)) subject to p-f(A,B,...)=0, where f denotes a function. Thank you for your help in advance. Ahmad Abu Hammour -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch/pipermail/r-help/attachments/20020426/3776f60f/attachment.html

...like mymodel<- lm(y~z+x+I(lag(x,-1)-1, data=anydata) summary returns only one coefficient for x and I(lag(x,-1)) Is there any way to do both of these models without going through long process of transforming of x and y and making ts.intersect before running lm() function. Thank you, Ahmad Abu Hammour -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at st...

...ng the time series and matrix into a data frame solves the problem >dim(xmat) [1] 98 7 > t(xmat) Error in "tsp<-"(*tmp*, value = xtsp) : invalid time series parameters specified > is.matrix(xmat) [1] TRUE > is.ts(xmat) [1] TRUE > is.data.frame(xmat) [1] FALSE Ahmad Abu Hammour -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch/pipermail/r-help/attachments/20020902/31f45f7d/attachment.html

...imposed on the coefficients. An example is as follows: Y_{t+2}=a1Y_{t+1} + a2 Y_t + b x_t + e_t restriction a1+ a2 =1 Is there a function or a package that can estimate the coefficient of a model like this? I want to estimate the coefficients rather than test them. Thank you for your help Ahmad Abu Hammour -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch/pipermail/r-help/attachments/20020408/691e8359/attachment.html

...ssage shown below even I use the default values: >plot.mts(infldata1[,3:4],lty=c(1:2),plot.type="single",lab=c(5,5,7)) Error in axis(side, at, labels, tick, line, pos, outer, font, vfont, ...) : location and label lengths differ, 6 != 3 Thank you for your help, Ahmad Abu Hammour -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch/pipermail/r-help/attachments/20010715/04d20308/attachment.html

...ssage shown below even I use the default values: >plot.mts(infldata1[,3:4],lty=c(1:2),plot.type="single",lab=c(5,5,7)) Error in axis(side, at, labels, tick, line, pos, outer, font, vfont, ...) : location and label lengths differ, 6 != 3 Thank you for your help, Ahmad Abu Hammour -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch/pipermail/r-help/attachments/20010715/04d20308/attachment.html