警告メッセージ

Question

ライブラリ記者を使用して記者とPPTXファイルを生成するときに、私は次の警告メッセージを取得しています：

Warning: System font `Calibri` not found. Closest match: `DejaVu Sans` 

Warning: System font `Times New Roman` not found. Closest match: `TeX Gyre Termes` 

Warning: System font `Courier New` not found. Closest match: `TeX Gyre Cursor` 

Warning: System font `Symbol` not found. Closest match: `DejaVu Sans` 

をそして、これは私のコードです：

library(ReporteRs) 
informe_ob <- pptx(template = 'plantilla_reporte_ejecutivo_ob.pptx') 
    informe_ob <- addSlide(informe_ob,"layout_informe_ob") 
    slide.layouts(informe_ob) 
    slide.layouts(informe_ob, "layout_informe_ob") 
    informe_ob <- addPlot(informe_ob, function() print(p1()), vector.graphic = TRUE) 
    informe_ob <- addPlot(informe_ob, function() print(p2()), vector.graphic = TRUE) 
    informe_ob <- addFlexTable(informe_ob, flextable = flex_table_ob()) 
    informe_ob <- addParagraph(informe_ob,as.character(today)) 
    informe_ob <- addParagraph(informe_ob,as.character(fecha_titulos)) 
    informe_ob <- addParagraph(informe_ob,as.character(tabla_ob())) 
    informe_ob <- addFlexTable(informe_ob, flextable = flex_entorno()) 
    informe_ob <- addFlexTable(informe_ob, flextable = flex_colectora()) 
    writeDoc(informe_ob, paste("Reporte_Ejecutivo_",tabla_ob(),"_",fecha_nombre_informe,".pptx",sep = "")) 

私のアプリは、時々、これに起因する障害が発生しています問題。誰にも分かりますか？

ありがとうございます！

UPDATE II：のSessionInfoを含むライブラリのバージョンあなたは彼らがあなたのシステム上の既存のフォント名を指すようにfontname_serif、fontname_sans、fontname_mono、fontname_symbolの引数を指定する必要が

sessionInfo() 
R version 3.4.0 (2017-04-21) 
Platform: x86_64-pc-linux-gnu (64-bit) 
Running under: Debian GNU/Linux 9 (stretch) 

Matrix products: default 
BLAS: /usr/lib/libblas/libblas.so.3.7.0 
LAPACK: /usr/lib/lapack/liblapack.so.3.7.0 

locale: 
[1] LC_CTYPE=es_ES.UTF-8   LC_NUMERIC=C 
[3] LC_TIME=es_ES.UTF-8   LC_COLLATE=es_ES.UTF-8 
[5] LC_MONETARY=es_ES.UTF-8  LC_MESSAGES=es_ES.UTF-8 
[7] LC_PAPER=es_ES.UTF-8   LC_NAME=es_ES.UTF-8 
[9] LC_ADDRESS=es_ES.UTF-8  LC_TELEPHONE=es_ES.UTF-8 
[11] LC_MEASUREMENT=es_ES.UTF-8 LC_IDENTIFICATION=es_ES.UTF-8 

attached base packages: 
[1] stats  graphics grDevices utils  datasets methods base 

other attached packages: 
[1] gdtools_0.1.4  sendmailR_1.2-1  rJava_0.9-8 
[4] ReporteRs_0.8.8  ReporteRsjars_0.0.2 ggplot2_2.2.1 
[7] DT_0.2    shinyWidgets_0.3.0 shinydashboard_0.6.1 
[10] bindrcpp_0.2   zoo_1.8-0   dplyr_0.7.1 
[13] shiny_1.0.3 

loaded via a namespace (and not attached): 
[1] zip_1.0.0   Rcpp_0.12.10  compiler_3.4.0 plyr_1.8.4 
[5] bindr_0.1   base64enc_0.1-3 R.methodsS3_1.7.1 R.utils_2.5.0 
[9] tools_3.4.0  uuid_0.1-2  digest_0.6.12  jsonlite_1.4 
[13] tibble_1.3.3  gtable_0.2.0  lattice_0.20-35 png_0.1-7 
[17] pkgconfig_2.0.1 rlang_0.1.1  yaml_2.1.14  stringr_1.2.0 
[21] knitr_1.15.1  xml2_1.1.1  officer_0.1.5   htmlwidgets_0.9 
[25] grid_3.4.0  glue_1.1.1  R6_2.2.1   rvg_0.1.4 
[29] reshape2_1.4.2 purrr_0.2.2.2  magrittr_1.5  scales_0.4.1 
[33] htmltools_0.3.6 assertthat_0.2.0 mime_0.5   xtable_1.8-2 
[37] colorspace_1.3-2 httpuv_1.3.3  labeling_0.3  stringi_1.1.5 
[41] lazyeval_0.2.0 munsell_0.4.3  Cairo_1.5-9  R.oo_1.21.0 

Answer 1

。 参照https://davidgohel.github.io/ReporteRs/reference/addPlot.html

gdtools::sys_fonts()を使用すると、システム上の既存のフォントの一覧を取得できます。