lights FAQ Forum github.com/luapower/xlsxwriter

Data Exchange
cjson
expat
genx
libb64
csv
xlsxwriter

working_with_cell_notation


Working with Cell Notation

Xlsxwriter.lua supports two forms of notation to designate the position of cells: Row-column notation and A1 notation.

Row-column notation uses a zero based index for both row and column while A1 notation uses the standard Excel alphanumeric sequence of column letter and 1-based row. For example:

 (0, 0)     -- Row-column notation.
 ("A1")     -- The same cell in A1 notation.

 (6, 2)     -- Row-column notation.
 ("C7")     -- The same cell in A1 notation.

Row-column notation is useful if you are referring to cells programmatically:

 for row = 0, 5 do
     worksheet:write(row, 0, "Hello")
 end

A1 notation is useful for setting up a worksheet manually and for working with formulas:

 worksheet:write("H1", 200)
 worksheet:write("H2", "=H1+1")

In general when using the xlsxwriter module you can use A1 notation anywhere you can use row-column notation.

Note

In Excel it is also possible to use R1C1 notation. This is not supported by xlsxwriter.

Relative and Absolute cell references

When dealing with Excel cell references it is important to distinguish between relative and absolute cell references in Excel.

Relative cell references change when they are copied while Absolute references maintain fixed row and/or column references. In Excel absolute references are prefixed by the dollar symbol as shown below:

 A1   -- Column and row are relative.
 $A1  -- Column is absolute and row is relative.
 A$1  -- Column is relative and row is absolute.
 $A$1 -- Column and row are absolute.

See the Microsoft Office documentation for more information on relative and absolute references.

Cell Utility Functions

The xlsxwriter.utility module contains several helper functions for dealing with A1 notation. These functions can be imported and used as follows:

 local Utility = require "xlsxwriter.utility"

 cell = Utilty.rowcol_to_cell(1, 2) --> C2

The available functions are shown below.

rowcol_to_cell()

rowcol_to_cell(row, col)

Convert a zero indexed row and column cell reference to a A1 style string.

param row

The cell row.

param col

The cell column.

rtype

A1 style string.

The rowcol_to_cell() function converts a zero indexed row and column cell values to an A1 style string:

 cell = Utilty.rowcol_to_cell(0, 0) --> A1
 cell = Utilty.rowcol_to_cell(0, 1) --> B1
 cell = Utilty.rowcol_to_cell(1, 0) --> A2

rowcol_to_cell_abs()

rowcol_to_cell_abs(row, col[, row_abs, col_abs])

Convert a zero indexed row and column cell reference to a A1 style string.

param row

The cell row.

param col

The cell column.

param row_abs

Optional flag to make the row absolute.

param col_abs

Optional flag to make the column absolute.

rtype

A1 style string.

The rowcol_to_cell_abs() function is like the rowcol_to_cell_abs() function but the optional parameters row_abs and col_abs can be used to indicate that the row or column is absolute:

 str = Utilty.rowcol_to_cell_abs(0, 0, false, true) --> $A1
 str = Utilty.rowcol_to_cell_abs(0, 0, true       ) --> A$1
 str = Utilty.rowcol_to_cell_abs(0, 0, true,  true) --> $A$1

cell_to_rowcol()

cell_to_rowcol(cell_str)

Convert a cell reference in A1 notation to a zero indexed row and column.

param cell_str

A1 style string, absolute or relative.

rtype

row, col.

The cell_to_rowcol() function converts an Excel cell reference in A1 notation to a zero based row and column. The function will also handle Excel"s absolute cell notation:

 row, col = Utilty.cell_to_rowcol("A1")   --> (0, 0)
 row, col = Utilty.cell_to_rowcol("B1")   --> (0, 1)
 row, col = Utilty.cell_to_rowcol("C2")   --> (1, 2)
 row, col = Utilty.cell_to_rowcol("$C2")  --> (1, 2)
 row, col = Utilty.cell_to_rowcol("C$2")  --> (1, 2)
 row, col = Utilty.cell_to_rowcol("$C$2") --> (1, 2)

col_to_name()

col_to_name(col[, col_abs])

Convert a zero indexed column cell reference to a string.

param col

The cell column.

param col_abs

Optional flag to make the column absolute.

rtype

Column style string.

The col_to_name() converts a zero based column reference to a string:

 column = Utilty.col_to_name(0)   --> A
 column = Utilty.col_to_name(1)   --> B
 column = Utilty.col_to_name(702) --> AAA

The optional parameter col_abs can be used to indicate if the column is absolute:

 column = Utilty.col_to_name(0, false) --> A
 column = Utilty.col_to_name(0, true)  --> $A
 column = Utilty.col_to_name(1, true)  --> $B

range()

range(first_row, first_col, last_row, last_col)

Converts zero indexed row and column cell references to a A1:B1 range string.

param first_row

The first cell row.

param first_col

The first cell column.

param last_row

The last cell row.

param last_col

The last cell column.

rtype

A1:B1 style range string.

The range() function converts zero based row and column cell references to an A1:B1 style range string:

 cell_range = Utilty.range(0, 0, 9, 0) --> A1:A10
 cell_range = Utilty.range(1, 2, 8, 2) --> C2:C9
 cell_range = Utilty.range(0, 0, 3, 4) --> A1:E4

range_abs()

The range_abs() function converts zero based row and column cell references to an absolute $A$1:$B$1 style range string:

 cell_range = Utilty.range_abs(0, 0, 9, 0) --> $A$1:$A$10
 cell_range = Utilty.range_abs(1, 2, 8, 2) --> $C$2:$C$9
 cell_range = Utilty.range_abs(0, 0, 3, 4) --> $A$1:$E$4

Last updated: 12 months ago | Edit on GitHub

Package:xlsxwriter
Pkg type:Lua
Version: v0.0.6-28-g34a34b8
Last commit:
Author: John McNamara
License: MIT

Requires: none

Required by: none


Top