search for: diffinv

In R 2.15.2 (and not before), in the definition of function 'diffinv.vector' in package stats, there is difference <- as.integer(differences) I believe differences <- as.integer(differences) is intended, because 'difference' is not referenced anywhere. However, without conversion of 'differences' to integer, 'diffinv.vector' in...

Hallo all somebody knows if exist a command who makes the opposite of what "diff" command do? I'he to write code? thanks Michele

...t) } } if(MA > 0){ for(j in (1:MA)){ temp <- temp + coefs[j + AR] * innov[l.s - j + 1] } } innov <- c(innov, 0) series.diff <- c(series.diff, temp) } if(d==0){ series.undiff <- series.diff } else { series.undiff <- diffinv(series.diff, lag=1, differences=d, xi = series[1:d]) } return(list(series = series.undiff, innov = innov)) }

...for (k in 1:length(rezagosx)) { X=cbind(X, lag(diff(log(x)),rezagosx[k])) } pred=predict(net, X,type="raw") print(sum(is.na(pred))) pred[muestra]=diff(log(x))[muestra] pred=exp(diffinv(pred[is.na(pred)==0],xi=log(vo)) ) muestra2=muestra muestra2[max(which(muestra2==1))+1]=TRUE print(length(pred)) print(sum(muestra2)) print(sum(is.na(X))) x[muestra2]=pred[1:sum(muestra2)] retur...

...like to use attributes to attach simple metadata to arbitrary R objects. It is essential that all functions that will work on the original object will also work on the object after metadata attributes have been added. However, this is not always the case for vectors: functions such as barplot, diffinv, and rle use is.vector, which (as documented and as discussed previously on this list) returns FALSE for a vector that has any attributes other than "names". For example, > x <- 1:3 > attr(x, "date") <- date() > barplot(x) Error in barplot.default(x) : '...

Hi, I have been looking at arima.sim to simulate the output from an ARMA model fed with a normal and uncorrelated input series but I cannot find a way to pass an intercept / constant into the model. In other words, the model input in the function allows only for the AR and MA components but I need to pass a constant. Can anyone help? Thanks Paolo [[alternative HTML version deleted]]

...l CRAN was broken. o bxp() fixed for e.g., boxplot(..., border=2:4) o approx(list(x=rep(NaN,9), y=1:9), xout=NaN) does not seg.fault anymore (PR#6809). o plot(1, pch=NA) does not give an error anymore and plot(1:2, pch=c("o",NA)) only prints one symbol (PR#6876). o diffinv(matrix(3, 7,0)) now works. o plot.ts(z) for multivariate 'z' now properly draws all 'nc' xlab`s when nc > 1 and obeys 'ann=FALSE' or 'axes=FALSE'. o aggregate(.data.frame) failed if the answer would have had one row. o recordPlot() and replayPlot(...

...l CRAN was broken. o bxp() fixed for e.g., boxplot(..., border=2:4) o approx(list(x=rep(NaN,9), y=1:9), xout=NaN) does not seg.fault anymore (PR#6809). o plot(1, pch=NA) does not give an error anymore and plot(1:2, pch=c("o",NA)) only prints one symbol (PR#6876). o diffinv(matrix(3, 7,0)) now works. o plot.ts(z) for multivariate 'z' now properly draws all 'nc' xlab`s when nc > 1 and obeys 'ann=FALSE' or 'axes=FALSE'. o aggregate(.data.frame) failed if the answer would have had one row. o recordPlot() and replayPlot(...

...Box-Pierce and Ljung-Box tests of independence ccf Cross-covariance and cross-correlations for two series cpgram Plot cumulative periodogram of univariate time series cycle Create time series giving the positions in a cycle of a time series deltat Return time interval between observations diffinv Discrete integration, the inverse of diff() embed Embedding a time series filter Linear filtering on a time series kernel Smoothing kernel objects (and Daniell, Fejer and (modified) Dirichlet kernels) lag Compute lagged version of time series na.contiguous...

Hello, I want to know if there are some functions or packages to solve differential and integral equation using R. Thanks. Shao chunxuan. [[alternative HTML version deleted]]

...lib/R/library/ts/R-ex/ar.ols.R action: create D: file: /usr/local/lib/R/library/ts/R-ex/arima0.R action: create D: file: /usr/local/lib/R/library/ts/R-ex/box.test.R action: create D: file: /usr/local/lib/R/library/ts/R-ex/cpgram.R action: create D: file: /usr/local/lib/R/library/ts/R-ex/diffinv.R action: create D: file: /usr/local/lib/R/library/ts/R-ex/embed.R action: create D: file: /usr/local/lib/R/library/ts/R-ex/filter.R action: create D: file: /usr/local/lib/R/library/ts/R-ex/kernapply.R action: create D: file: /usr/local/lib/R/library/ts/R-ex/kernel.R action: create D:...

...text html latex beavers text html latex example box.test text html latex example cpgram text html latex example decompose text html latex example diffinv text html latex example embed text html latex example filter text html latex example kernapply text html latex example kernel t...