r - knitr updated from 1.2 to 1.4 error: Quitting from lines -

i updated knitr 1.4, , since .rnw files don't compile. document rich (7 chapters, included child=""). now, in recent knitr version error message:

    quitting lines 131-792 (/daten/anna/tex/costa/chapter1.rnw)      quitting lines 817-826 (/daten/anna/tex/costa/chapter1.rnw)      fehler in if (eval) { :      argument kann nicht als logischer wert interpretiert werden 

(the last 2 lines mean knitr looking logical , cannot find it. @ lines 131 , 817 2 figures end. compiling these sniplets separately work. have no idea how resolve problem. thank's in advance hints allow resolve issue.

here sessioninfo()

    r version 2.15.1 (2012-06-22)     platform: x86_64-pc-linux-gnu (64-bit)      locale:       [1] lc_ctype=de_de.utf-8       lc_numeric=c                     [3] lc_time=de_de.utf-8        lc_collate=de_de.utf-8           [5] lc_monetary=de_de.utf-8    lc_messages=de_de.utf-8          [7] lc_paper=c                 lc_name=c                        [9] lc_address=c               lc_telephone=c                   [11] lc_measurement=de_de.utf-8 lc_identification=c               attached base packages:       [1] tools     stats     graphics  grdevices utils     datasets  methods         [8] base             other attached packages:       [1] knitr_1.4        loaded via namespace (and not attached):       [1] compiler_2.15.1 digest_0.6.3    evaluate_0.4.7  formatr_0.9           [5] stringr_0.6.2   tcltk_2.15.1    

following suggestions of hui, run each chapter separately knit("chapter1.rnw") , on. no error message occurs, , separate tex files created. provide more information display part of code. there main document in several options set

     <<options-setting,echo=false>>=      showthis <- false      evalthis <- false      evalchapter <- true      opts_chunk$set(comment=na, fig.width=6, fig.height=4)      @ 

the each chapter used via child chunks, e.g. chapter1 called from

     <<child-chapter1, child='chapter1.rnw', eval=evalchapter>>=      @ 

the error message appears when knitting main rnw file given above. related figure environment follows

     \begin{figure}[ht]        \centering       <<wuerfel-simulation,echo=showthis,fig.height=5>>=       data.sample6 <- sample(1:6,repl=true,100)       table(data.sample6)       barplot(table(data.sample6)/100,col=5,main="haeufigkeiten beim wuerfeln")       @        \caption{visualisierung beim w"urfeln. 100 versuche.}       \label{fig:muent-vis}       \end{figure} 

this not advanced, error still given before. quitting lines concerns long text, 131 (end of first chunk) line 792 (beginning of followup chunk), is

       << zeiten, echo=showthis,eval=evalthis>>=        zeiten <- c(17,16,20,24,22,15,21,15,17,22)        max(zeiten)        mean(zeiten)        zeiten[4] <- 18; zeiten        mean(zeiten)        sum(zeiten > 20)        @ 

is there problem correctly closing chunk?

i located error , provide short piece of code reproducible error message.it concerns conditional evaluation of child processes involving sexpr:

the main file following

    \documentclass{article}     \begin{document}     <<options-setting,echo=false>>=     evalchapter <- true     @     <<test,child="test-child.rnw", eval=evalchapter>>=     @      \end{document} 

the related child file 'test-child.rnw' is

     <<no-sexpr>>=      t <- 2:4      @       text \sexpr{(t <- 2:4)} 

knitting 'as is' gives error message above. removing sexpr in child works nicely. but, works nicely, if remove conditioning in call of child file, i.e., without 'eval=evalchapter'

since use sexpr quite have solution problem. mentioned earlier, there no problems knitr version 1.2.

this related change in knitr 1.3 , mentioned in news:

added argument options knit_child() set global chunk options child documents; if parent chunk calls child document (via child option), chunk options of parent chunk used global options child document, e.g. <<foo, child='bar.rnw', fig.path='figure/foo-'>>=, figure path prefix figure/foo- in bar.rnw; see how avoid figure filenames in child calls application

and caused bug inline r code. in case, chunk option eval=evalchapter not evaluated when used evaluating inline code. have fixed bug in development version v1.4.5 on github.