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chart_clustered.c
<< chart_doughnut.c chart_data_table.c >>

Example of creating a clustered Excel chart where there are two levels of category on the X axis.

The categories in clustered charts are 2D ranges, instead of the more normal 1D ranges. The series are shown as formula strings for clarity but you can also use the a list syntax.

chart_clustered.png
/*
* An example of a clustered category chart using the libxlsxwriter library.
*
* Copyright 2014-2017, John McNamara, jmcnamara@cpan.org
*
*/
#include "xlsxwriter.h"
/*
* Write some data to the worksheet.
*/
void write_worksheet_data(lxw_worksheet *worksheet, lxw_format *bold) {
worksheet_write_string(worksheet, 0, 0, "Types", bold);
worksheet_write_string(worksheet, 1, 0, "Type 1", NULL);
worksheet_write_string(worksheet, 4, 0, "Type 2", NULL);
worksheet_write_string(worksheet, 0, 1, "Sub Type", bold);
worksheet_write_string(worksheet, 1, 1, "Sub Type A", NULL);
worksheet_write_string(worksheet, 2, 1, "Sub Type B", NULL);
worksheet_write_string(worksheet, 3, 1, "Sub Type C", NULL);
worksheet_write_string(worksheet, 4, 1, "Sub Type D", NULL);
worksheet_write_string(worksheet, 5, 1, "Sub Type E", NULL);
worksheet_write_string(worksheet, 0, 2, "Value 1", bold);
worksheet_write_number(worksheet, 1, 2, 5000, NULL);
worksheet_write_number(worksheet, 2, 2, 2000, NULL);
worksheet_write_number(worksheet, 3, 2, 250, NULL);
worksheet_write_number(worksheet, 4, 2, 6000, NULL);
worksheet_write_number(worksheet, 5, 2, 500, NULL);
worksheet_write_string(worksheet, 0, 3, "Value 2", bold);
worksheet_write_number(worksheet, 1, 3, 8000, NULL);
worksheet_write_number(worksheet, 2, 3, 3000, NULL);
worksheet_write_number(worksheet, 3, 3, 1000, NULL);
worksheet_write_number(worksheet, 4, 3, 6000, NULL);
worksheet_write_number(worksheet, 5, 3, 300, NULL);
worksheet_write_string(worksheet, 0, 4, "Value 3", bold);
worksheet_write_number(worksheet, 1, 4, 6000, NULL);
worksheet_write_number(worksheet, 2, 4, 4000, NULL);
worksheet_write_number(worksheet, 3, 4, 2000, NULL);
worksheet_write_number(worksheet, 4, 4, 6500, NULL);
worksheet_write_number(worksheet, 5, 4, 200, NULL);
}
/*
* Create a worksheet with examples charts.
*/
int main() {
lxw_workbook *workbook = new_workbook("chart_clustered2.xlsx");
lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
/* Add a bold format to use to highlight the header cells. */
lxw_format *bold = workbook_add_format(workbook);
/* Write some data for the chart. */
write_worksheet_data(worksheet, bold);
/*
* Configure the series. Note, that the categories are 2D ranges (from
* column A to column B). This creates the clusters. The series are shown
* as formula strings for clarity but you can also use variables with the
* chart_series_set_categories() and chart_series_set_values()
* functions. See the docs.
*/
"=Sheet1!$A$2:$B$6",
"=Sheet1!$C$2:$C$6");
"=Sheet1!$A$2:$B$6",
"=Sheet1!$D$2:$D$6");
"=Sheet1!$A$2:$B$6",
"=Sheet1!$E$2:$E$6");
/* Set an Excel chart style. */
chart_set_style(chart, 37);
/* Turn off the legend. */
/* Insert the chart into the worksheet. */
worksheet_insert_chart(worksheet, CELL("G3"), chart);
return workbook_close(workbook);
}