mirror of
https://github.com/jmcnamara/libxlsxwriter
synced 2025-03-28 21:13:14 +00:00
121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
/*
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* An example of creating Excel column charts with data tables using the
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* libxlsxwriter library.
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*
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* Copyright 2014-2025, John McNamara, jmcnamara@cpan.org
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*
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*/
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#include "xlsxwriter.h"
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/*
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* Write some data to the worksheet.
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*/
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void write_worksheet_data(lxw_worksheet *worksheet, lxw_format *bold) {
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int row, col;
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uint8_t data[6][3] = {
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/* Three columns of data. */
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{2, 10, 30},
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{3, 40, 60},
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{4, 50, 70},
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{5, 20, 50},
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{6, 10, 40},
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{7, 50, 30}
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};
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worksheet_write_string(worksheet, CELL("A1"), "Number", bold);
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worksheet_write_string(worksheet, CELL("B1"), "Batch 1", bold);
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worksheet_write_string(worksheet, CELL("C1"), "Batch 2", bold);
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for (row = 0; row < 6; row++)
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for (col = 0; col < 3; col++)
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worksheet_write_number(worksheet, row + 1, col, data[row][col] , NULL);
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}
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/*
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* Create a worksheet with examples charts.
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*/
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int main() {
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lxw_workbook *workbook = workbook_new("chart_data_table.xlsx");
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lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
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lxw_chart_series *series;
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/* Add a bold format to use to highlight the header cells. */
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lxw_format *bold = workbook_add_format(workbook);
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format_set_bold(bold);
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/* Write some data for the chart. */
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write_worksheet_data(worksheet, bold);
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/*
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* Chart 1. Create a column chart with a data table.
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*/
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lxw_chart *chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add the first series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7", "=Sheet1!$B$2:$B$7");
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/* Set the name for the series instead of the default "Series 1". */
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chart_series_set_name(series, "=Sheet1!$B$1");
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/* Add a second series but leave the categories and values undefined. They
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* can be defined later using the alternative syntax shown below. */
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series = chart_add_series(chart, NULL, NULL);
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/* Configure the series using a syntax that is easier to define programmatically. */
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chart_series_set_categories(series, "Sheet1", 1, 0, 6, 0); /* "=Sheet1!$A$2:$A$7" */
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chart_series_set_values(series, "Sheet1", 1, 2, 6, 2); /* "=Sheet1!$C$2:$C$7" */
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chart_series_set_name_range(series, "Sheet1", 0, 2); /* "=Sheet1!$C$1" */
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/* Add a chart title and some axis labels. */
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chart_title_set_name(chart, "Chart with Data Table");
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chart_axis_set_name(chart->x_axis, "Test number");
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chart_axis_set_name(chart->y_axis, "Sample length (mm)");
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/* Set a default data table on the X-axis. */
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chart_set_table(chart);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart(worksheet, CELL("E2"), chart);
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/*
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* Chart 2. Create a column chart with a data table and legend keys.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add the first series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7", "=Sheet1!$B$2:$B$7");
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/* Set the name for the series instead of the default "Series 1". */
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chart_series_set_name(series, "=Sheet1!$B$1");
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/* Add the second series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7", "=Sheet1!$C$2:$C$7");
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/* Set the name for the series instead of the default "Series 2". */
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chart_series_set_name(series, "=Sheet1!$C$1");
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/* Add a chart title and some axis labels. */
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chart_title_set_name(chart, "Data Table with legend keys");
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chart_axis_set_name(chart->x_axis, "Test number");
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chart_axis_set_name(chart->y_axis, "Sample length (mm)");
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/* Set a data table on the X-axis with the legend keys shown. */
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chart_set_table(chart);
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chart_set_table_grid(chart, LXW_TRUE, LXW_TRUE, LXW_TRUE, LXW_TRUE);
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/* Turn off the legend. */
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chart_legend_set_position(chart, LXW_CHART_LEGEND_NONE);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart(worksheet, CELL("E18"), chart);
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return workbook_close(workbook);
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}
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