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Example 5: Spanning Headers

Create a Table with Spanning Headers

Spanning headers are a common requirement of regulatory tables, yet few reporting packages support them. The reporter package supports any number of spanning levels, along with a simple and flexible syntax to define them.

library(reporter)

# Create temporary path
tmp <- file.path(tempdir(), "example5.pdf")

# Prepare Data
dat <- mtcars[1:10, ]
df <- data.frame(vehicle = rownames(dat), dat)

# Define Table with spanning headers
tbl <- create_table(df) %>% 
  titles("Table 1.0", "MTCARS Spanning Headers") %>% 
  spanning_header(from = "mpg", to = "hp", label = "Span 1", n = 10) %>%
  spanning_header(from = "drat", to = "qsec", label = "Span 2", n = 10) %>%
  spanning_header(from = "vs", to = "carb", label = "Span 3", n = 10) %>%
  spanning_header(from = "drat", to = "carb", 
                  label = "Super Span", level = 2) %>%
  define(vehicle, label = "Vehicle") %>% 
  define(mpg, format = "%.1f") %>% 
  define(disp, visible = FALSE) %>% 
  define(am, visible = FALSE) %>% 
  footnotes("* Motor Trend, 1974")

# Create Report and add table 
rpt <- create_report(tmp, output_type = "PDF", 
                     font = "Courier", font_size = 12) %>%
  page_header(left = "Client: Motor Trend", right = "Study: Cars") %>% 
  add_content(tbl) %>% 
  page_footer(left = Sys.time(), 
            center = "Confidential", 
            right = "Page [pg] of [tpg]")

# Write the report
res <- write_report(rpt)

# file.show(tmp)

Next: Example 6: Page Wrap

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