FlexTable-alter: alter FlexTable content and format
In davidgohel/ReporteRs: Microsoft Word and PowerPoint Documents Generation

Description Usage Arguments Details See Also Examples

add text or format a FlexTable object.

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## S3 replacement method for class 'FlexTable'
 x[i, j, text.properties,
  newpar = FALSE, byrow = FALSE, to = "body", side = "top"] <- value

`x`	the `FlexTable` object
`i`	vector (integer index, row.names values or boolean vector) for rows selection.
`j`	vector (integer index, col.names values or boolean vector) for columns selection.
`text.properties`	formatting properties (an object of class `textProperties`). Used only when `value` is a `data.frame`, a `maxtrix` or a vector. It will be used to format added text.
`newpar`	logical value specifying wether or not the content should be added as a new paragraph (therefore added on a new line).
`byrow`	logical. If `FALSE` (the default) content is added by columns , otherwise content is added by rows.
`to`	specify on which part of the FlexTable to apply the `value`, must be one of the following values “body” (default) or “header” or “footer”
`side`	used only when value is a `borderProperties`, specify on which side to apply the properties. It must be one of “bottom”, “top”, “left”, “right”.
`value`	see details.

Use ft_object[1:4, 2:3] <- value to perform the operation on the body subset of of the FlexTable.

Use ft_object[] <- value to perform the operation on the whole part (body, header or footer) of the FlexTable.

Use ft_object[1, 2, to = "header"] <- value to perform the operation on the header subset of the FlexTable.

Use ft_object[1, 2, , to = "footer"] <- value to perform the operation on the footer subset of the FlexTable.

To format content, argument value (the right side of the <-) should be one of the following:

for table cells: an object of class cellProperties
for paragraphs contained in table cells: an object of class parProperties
for text contained in table cells: an object of class textProperties
for borders of table cells: an object of class borderProperties

To add content, there are two options:

option 1: value should be a data.frame or a matrix or a vector with as many elements as defined by the selection.
option 2: value is a pot object, its value will be added in all cells defined by the selection.

If dealing with borderProperties objects, use also argument side to specify on which side of cells to apply border properties.

FlexTable, borderProperties , cellProperties, parProperties , textProperties

if( check_valid_java_version() ){

MyFTable <- FlexTable( data = mtcars[1:10, ], add.rownames=TRUE )
# modify the text formatting properties for the row.names column
MyFTable[ , 1] <- textProperties( font.style="italic", font.size = 9)
# align text to right for the row.names column
MyFTable[ , 1] <- parProperties( text.align = "right" )

# change cell formatting properties for various columns
MyFTable[ c(3,6:9), c( "mpg", "disp", "hp", "drat", "wt",
  "qsec" ) ] <- cellProperties( background.color="#CCCCCC")
# add text to elements of the column cyl
MyFTable[, "cyl", text.properties = textProperties(
  vertical.align="superscript", font.size = 9) ] <- " miles/gallon"

}