Clears named regions in a
## S4 method for signature 'workbook,character' clearNamedRegion(object, name)
The name of the named region to clear
Clearing a named region/range means to clear all the cells associated with that named region. Clearing named regions can be useful if (named) data sets in a worksheet need to be replaced, i.e. data is first read, modified in R and finally written back to the the same named region. Without clearing the named region first, (parts of) the original data may still be visible if they occupied a larger range in the worksheet.
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## Not run: # mtcars xlsx file from demoFiles subfolder of # package XLConnect demoExcelFile <- system.file("demoFiles/mtcars.xlsx", package = "XLConnect") # Load workbook wb <- loadWorkbook(demoExcelFile) # Read named region 'mtcars' data <- readNamedRegion(wb, name = "mtcars", header = TRUE) # Only consider cars with a weight >= 5 data <- data[data$wt >= 5, ] # Clear original named region clearNamedRegion(wb, name = "mtcars") # Write subsetted data back # Note: this is covering a smaller area now - # writeNamedRegion automatically redefines the named region # to the size/area of the data writeNamedRegion(wb, data = data, name = "mtcars", header = TRUE) ## End(Not run)
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