144 lines
4.7 KiB
C
144 lines
4.7 KiB
C
/*
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* An example of creating Excel radar charts using the libxlsxwriter library.
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*
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* Copyright 2014-2021, 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, 30, 25},
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{3, 60, 40},
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{4, 70, 50},
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{5, 50, 30},
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{6, 40, 50},
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{7, 30, 40}
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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_radar.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 radar chart.
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*/
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lxw_chart *chart = workbook_add_chart(workbook, LXW_CHART_RADAR);
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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$1" */
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/* Add a chart title and some axis labels. */
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chart_title_set_name(chart, "Results of sample analysis");
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chart_axis_set_name(chart->x_axis, "Test number");
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chart_axis_set_name(chart->y_axis, "Sample length (mm)");
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/* Set an Excel chart style. */
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chart_set_style(chart, 11);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart(worksheet, CELL("E2"), chart);
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/*
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* Chart 2. Create a radar chart with markers.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_RADAR_WITH_MARKERS);
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/* Add the first series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$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$1");
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/* Add a chart title and some axis labels. */
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chart_title_set_name(chart, "Results of sample analysis");
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chart_axis_set_name(chart->x_axis, "Test number");
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chart_axis_set_name(chart->y_axis, "Sample length (mm)");
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/* Set an Excel chart style. */
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chart_set_style(chart, 12);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart(worksheet, CELL("E18"), chart);
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/*
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* Chart 3. Create a filled radar chart.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_RADAR_FILLED);
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/* Add the first series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$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, "Results of sample analysis");
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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 an Excel chart style. */
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chart_set_style(chart, 13);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart(worksheet, CELL("E34"), chart);
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return workbook_close(workbook);
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}
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