ARMAspec: no visible global function definition for ‘abline’
BoxCox.ar: no visible global function definition for ‘ar’
BoxCox.ar: no visible global function definition for ‘plot’
BoxCox.ar: no visible global function definition for ‘qchisq’
BoxCox.ar: no visible global function definition for ‘lines’
BoxCox.ar: no visible global function definition for ‘abline’
BoxCox.ar: no visible global function definition for ‘par’
BoxCox.ar: no visible global function definition for ‘text’
Keenan.test: no visible global function definition for ‘ar’
Keenan.test : myfun: no visible global function definition for
  ‘na.omit’
Keenan.test : myfun: no visible global function definition for ‘lm.fit’
Keenan.test: no visible global function definition for ‘lm’
Keenan.test: no visible global function definition for ‘pf’
LB.test: no visible global function definition for ‘residuals’
LB.test: no visible global function definition for ‘window’
LB.test: no visible global function definition for ‘time’
LB.test: no visible binding for global variable ‘na.pass’
LB.test: no visible global function definition for ‘pchisq’
McLeod.Li.test : BL: no visible binding for global variable ‘na.pass’
McLeod.Li.test : BL: no visible global function definition for ‘pchisq’
McLeod.Li.test: no visible global function definition for ‘window’
McLeod.Li.test: no visible global function definition for ‘time’
McLeod.Li.test: no visible global function definition for ‘abline’
Tsay.test: no visible global function definition for ‘ar’
Tsay.test: no visible global function definition for ‘na.omit’
Tsay.test: no visible global function definition for ‘lm’
Tsay.test: no visible global function definition for ‘anova’
acf: no visible binding for global variable ‘na.fail’
arima : armafilter: no visible global function definition for ‘filter’
arima : makePulse: no visible global function definition for ‘is.ts’
arima : armafn: no visible global function definition for ‘makeARIMA’
arima : armafn1: no visible global function definition for ‘makeARIMA’
arima : armaCSS: no visible global function definition for ‘makeARIMA’
arima : armaCSS1: no visible global function definition for ‘makeARIMA’
arima: no visible global function definition for ‘as.ts’
arima: no visible global function definition for ‘frequency’
arima: no visible global function definition for ‘tsp’
arima: no visible global function definition for ‘tsp<-’
arima: no visible global function definition for ‘na.omit’
arima: no visible global function definition for ‘lm’
arima: no visible binding for global variable ‘na.omit’
arima: no visible global function definition for ‘optim’
arima: no visible global function definition for ‘makeARIMA’
arima.boot : arimab.sim: no visible global function definition for
  ‘filter’
arima.boot : arimab.sim: no visible global function definition for
  ‘rnorm’
arima.boot: no visible global function definition for ‘coef’
arimax : armafilter: no visible global function definition for ‘filter’
arimax : makePulse: no visible global function definition for ‘is.ts’
arimax : armafn: no visible global function definition for ‘makeARIMA’
arimax : armafn1: no visible global function definition for ‘makeARIMA’
arimax : armaCSS: no visible global function definition for ‘makeARIMA’
arimax : armaCSS1: no visible global function definition for
  ‘makeARIMA’
arimax: no visible global function definition for ‘as.ts’
arimax: no visible global function definition for ‘frequency’
arimax: no visible global function definition for ‘tsp’
arimax: no visible global function definition for ‘tsp<-’
arimax: no visible global function definition for ‘na.omit’
arimax: no visible global function definition for ‘lm’
arimax: no visible binding for global variable ‘na.omit’
arimax: no visible global function definition for ‘optim’
arimax: no visible global function definition for ‘makeARIMA’
armasubsets: no visible global function definition for ‘ar’
armasubsets: no visible global function definition for ‘na.omit’
detectAO: no visible global function definition for ‘residuals’
detectAO: no visible global function definition for ‘ARMAtoMA’
detectAO: no visible global function definition for ‘filter’
detectAO: no visible global function definition for ‘qnorm’
detectIO: no visible global function definition for ‘residuals’
detectIO: no visible global function definition for ‘qnorm’
eacf: no visible global function definition for ‘ar.ols’
fitted.Arima: no visible global function definition for ‘residuals’
gBox : gBox.test: no visible global function definition for ‘residuals’
gBox : gBox.test: no visible global function definition for ‘filter’
gBox : gBox.test: no visible binding for global variable ‘na.omit’
gBox : gBox.test: no visible global function definition for ‘pchisq’
gBox : gBox1.test: no visible global function definition for
  ‘residuals’
gBox : gBox1.test: no visible global function definition for ‘filter’
gBox : gBox1.test: no visible binding for global variable ‘na.omit’
gBox : gBox1.test: no visible global function definition for ‘pchisq’
gBox: no visible global function definition for ‘abline’
garch.sim: no visible binding for global variable ‘rnorm’
harmonic: no visible global function definition for ‘is.ts’
harmonic: no visible global function definition for ‘frequency’
harmonic: no visible global function definition for ‘time’
lagplot: no visible global function definition for ‘par’
lagplot: no visible global function definition for ‘predict’
lagplot: no visible global function definition for ‘plot’
lagplot: no visible global function definition for ‘lines’
lagplot: no visible global function definition for ‘na.omit’
plot.Arima: no visible global function definition for ‘predict’
plot.Arima: no visible global function definition for ‘start’
plot.Arima: no visible global function definition for ‘end’
plot.Arima: no visible global function definition for ‘ts’
plot.Arima: no visible global function definition for ‘window’
plot.Arima: no visible global function definition for ‘frequency’
plot.Arima: no visible binding for global variable ‘plot’
plot.Arima: no visible binding for global variable ‘lines’
plot.Arima: no visible binding for global variable ‘points’
plot.Arima: no visible global function definition for ‘deltat’
plot.Arima: no visible global function definition for ‘lines’
plot.armasubsets: no visible global function definition for ‘gray’
plot.armasubsets: no visible global function definition for ‘par’
plot.armasubsets: no visible global function definition for ‘image’
plot.armasubsets: no visible global function definition for ‘abline’
plot.armasubsets: no visible global function definition for ‘axis’
plot.armasubsets: no visible global function definition for ‘title’
plot.armasubsets: no visible global function definition for ‘box’
plot1.acf: no visible global function definition for ‘plot’
plot1.acf: no visible global function definition for ‘abline’
plot1.acf: no visible global function definition for ‘lines’
predict.TAR: no visible binding for global variable ‘quantile’
prewhiten : filter.mod: no visible global function definition for
  ‘filter’
prewhiten: no visible global function definition for ‘ar.ols’
prewhiten: no visible global function definition for ‘filter’
prewhiten: no visible global function definition for ‘ccf’
prewhiten: no visible binding for global variable ‘na.omit’
qar.sim: no visible global function definition for ‘rnorm’
rstandard.Arima: no visible global function definition for ‘residuals’
season: no visible global function definition for ‘is.ts’
season: no visible global function definition for ‘frequency’
season: no visible global function definition for ‘start’
spec: no visible global function definition for ‘ts’
spec: no visible global function definition for ‘spec.pgram’
spec: no visible global function definition for ‘spec.ar’
spec: no visible global function definition for ‘df.kernel’
spec: no visible global function definition for ‘qchisq’
spec: no visible global function definition for ‘lines’
tar: no visible binding for global variable ‘var’
tar: no visible global function definition for ‘lsfit’
tar: no visible global function definition for ‘ls.print’
tar.sim: no visible global function definition for ‘rnorm’
tlrt : p.value.tlrt : t1: no visible global function definition for
  ‘pnorm’
tlrt : p.value.tlrt: no visible global function definition for ‘qnorm’
tlrt : p.value.tlrt : tp1: no visible global function definition for
  ‘pnorm’
tlrt : p.value.tlrt : tp1: no visible global function definition for
  ‘dnorm’
tlrt : p.value.tlrt : tp2: no visible global function definition for
  ‘pnorm’
tlrt : p.value.tlrt : tp2: no visible global function definition for
  ‘dnorm’
tlrt : p.value.tlrt: no visible global function definition for ‘dchisq’
tlrt: no visible global function definition for ‘ar’
tsdiag.Arima: no visible global function definition for ‘par’
tsdiag.Arima: no visible global function definition for ‘window’
tsdiag.Arima: no visible global function definition for ‘time’
tsdiag.Arima: no visible global function definition for ‘qnorm’
tsdiag.Arima: no visible global function definition for ‘plot’
tsdiag.Arima: no visible global function definition for ‘abline’
tsdiag.Arima: no visible global function definition for ‘filter’
tsdiag.TAR : box.ljung: no visible global function definition for ‘var’
tsdiag.TAR : box.ljung: no visible global function definition for
  ‘pchisq’
tsdiag.TAR: no visible global function definition for ‘par’
tsdiag.TAR: no visible global function definition for ‘plot’
tsdiag.TAR: no visible global function definition for ‘qnorm’
tsdiag.TAR: no visible global function definition for ‘abline’
Undefined global functions or variables:
  ARMAtoMA abline anova ar ar.ols as.ts axis box ccf coef dchisq deltat
  df.kernel dnorm end filter frequency gray image is.ts lines lm lm.fit
  ls.print lsfit makeARIMA na.fail na.omit na.pass optim par pchisq pf
  plot pnorm points predict qchisq qnorm quantile residuals rnorm
  spec.ar spec.pgram start text time title ts tsp tsp<- var window
Consider adding
  importFrom("grDevices", "gray")
  importFrom("graphics", "abline", "axis", "box", "image", "lines",
             "par", "plot", "points", "text", "title")
  importFrom("stats", "ARMAtoMA", "anova", "ar", "ar.ols", "as.ts",
             "ccf", "coef", "dchisq", "deltat", "df.kernel", "dnorm",
             "end", "filter", "frequency", "is.ts", "lm", "lm.fit",
             "ls.print", "lsfit", "makeARIMA", "na.fail", "na.omit",
             "na.pass", "optim", "pchisq", "pf", "pnorm", "predict",
             "qchisq", "qnorm", "quantile", "residuals", "rnorm",
             "spec.ar", "spec.pgram", "start", "time", "ts", "tsp",
             "tsp<-", "var", "window")
to your NAMESPACE file.