Borders
- Within
grob_layout(), thegrob_row() andgrob_col() functions are able to put borders around theircontents.
grob_layout(grob_row(grob_col(1),grob_col(border =TRUE,2) ),grob_row(border =TRUE,grob_col(3),grob_col(border =TRUE,grob_row(border =TRUE,grob_col(border =TRUE,4)),grob_row(border =TRUE,grob_col(border =TRUE,5)) ) ),height =100,width =100 )%>%view_grob()

- Those borders are customizable. With the
border_aes_list argument and thega_list()function, the user can adjust- Which border sides to display (
border_sides) - The border width (
border_width) - The border color (
border_color)
- For more information on the aesthetics above, see
?ga_list.
grob_layout(grob_row(grob_col(1),grob_col(border =TRUE,border_aes_list =ga_list(border_color ="red" ),2 ) ),grob_row(border =TRUE,border_aes_list =ga_list(border_sides ="top",border_width =5 ),grob_col(3),grob_col(border =TRUE,border_aes_list =ga_list(border_sides ="left, bottom",border_color ="blue",border_width =4 ),4 ) ),height =100,width =100 )%>%view_grob()

Titles
- Titles can be added to either
grob_layout(),grob_row() orgrob_col().
grob_layout(title ="grob-layout title",grob_row(grob_col(1),grob_col(title ="grob-column title",2) ),grob_row(title ="grob-row title",grob_col(3),grob_col(4) ) )%>%view_grob(height =100,width =100)

- The height of the title can be adjusted by either giving an explicitheight in millimeters to the
title_height argument, orchanging the title height proportion withtitle_p.title_p corresponds to the proportion of the heightallotted to the grob in question which will be given to the title.title_height will overridetitle_p in allcases.
grob_layout(title ="grob-layout title",title_height =20,grob_row(grob_col(1),grob_col(title ="grob-column title",title_p =0.5,2 ) ),grob_row(title ="grob-row title",title_height =10,grob_col(3),grob_col(4) ) )%>%view_grob(height =100,width =100)

- The aesthetics of the title can be altered as well with the
title_aes_list argument andga_list().
grob_layout(title ="grob-layout title",title_height =20,title_aes_list =ga_list(text_color ="blue",border_sides ="bottom" ),grob_row(grob_col(1),grob_col(title ="grob-column title",title_p =0.5,title_aes_list =ga_list(font_face =3,text_color ="white",background_color ="gray40" ),2 ) ) )%>%view_grob(height =100,width =100)

Captions
- Everything that applies to titles also applies to captions, as
grob_layout(),grob_col() andgrob_row() are all equipped withcaption,caption_aes_list,caption_p andcaption_height arguments. - By default, captions are more subtle than titles, but theirappearances can be altered however the user wants.
grob_layout(caption ="grob-layout caption",grob_row(grob_col(1),grob_col(caption ="grob-column caption",2) ),grob_row(caption ="grob-row caption",grob_col(3),grob_col(4) ) )%>%view_grob(height =100,width =100)

grob_layout(caption ="grob-layout caption",caption_height =20,grob_row(grob_col(1),grob_col(caption ="grob-column caption",caption_p =0.5,2 ) ),grob_row(caption ="grob-row caption",caption_height =10,grob_col(3),grob_col(4) ) )%>%view_grob(height =100,width =100)

grob_layout(caption ="grob-layout caption",caption_height =20,caption_aes_list =ga_list(text_color ="blue",border_sides ="bottom" ),grob_row(grob_col(1),grob_col(caption ="grob-column caption",caption_p =0.5,caption_aes_list =ga_list(font_face =3,text_color ="white",background_color ="gray40" ),2 ) ) )%>%view_grob(height =100,width =100)
