How to Create a Biorhythm Chart (151439)


The information in this article applies to:

  • Microsoft Excel 97 for Windows
  • Microsoft Excel 98 Macintosh Edition
This article was previously published under Q151439

SUMMARY

It is possible to use Microsoft Excel to create a biorhythm chart. A biorhythm chart tracks the physical, emotional, and intellectual cycles of a person over a 29-day period. These three cycles are further broken down to the following day periods: 
   Physical:      23-day period
   Emotional:     28-day period
   Intellectual:  33-day period

MORE INFORMATION

On a chart, these three cycles duplicate a sine wave pattern. Days that fall above the X-axis are said to be good days, and conversely, days that fall below the X-axis are said to be bad. To chart a biorhythm, follow these steps:
  1. Enter the following data in a worksheet:
            A1: Name:           B1:                    C1:
        A2: Birth date:     B2:                    C2:
        A3: Today's Date:   B3:                    C3:
        A4:                 B4:                    C4:
        A5:                 B5: Days Elapsed       C5:
        A6: Period          B6: Since Birth Date   C6: Date
        A7:                 B7:                    C7:
        A8:                 B8:                    C8:
  2. In cell B3, type the following formula to return the current date:

    B3: =TODAY()

    In cell B2, type the date of birth of the person whose biorhythm is being charted. In cell B1, type the name.
  3. To create a series that will represent the days in each 29-day period, type the following values into the following cells:

    A7: -14
    A8: -13

    Select cells A7:A8. Use the fill handle to fill the cells down through cells A9:A35.
  4. In cell B7, type the following formula to calculate the number of days that have elapsed between the day in the 29-day period and the birth date:

    B7: =$B$3+A7-$B$2

    With cell B7 selected, use the fill handle to fill the formula down through cell B35.
  5. To create the dates that fall in the 29-day period, enter the following formula in cell C7, and then fill it down to cell C35:

    C7: =$B$3+A7

  6. Type the following data in the worksheet:

    D6: Physical
    D7: =SIN(MOD($B7,23)*2*PI()/23)

    E6: Emotional
    E7: =SIN(MOD($B7,28)*2*PI()/28)

    F6: Intellectual
    F7: =SIN(MOD($B7,33)*2*PI()/33)

    Select cells D7:F7 and fill the formulas down through cells D35:F35.
  7. To create the chart do the following:

    In Microsoft Excel 97 and Microsoft Excel 98

    1. Select the following range of cells on the worksheet: C6:F35.
    2. On the Insert menu, click Chart.
    3. In the Chart Wizard, Step 1, box, under "Chart type," click Line, and then click Next.
    4. Under "Select a format for the Line chart," click chart type 1, and then click Next.
    5. Click Next in Steps 2 and 3.
    6. In Step 4 click "As new sheet:," and then click Finish.
    7. Double-click the Y-axis. Click the Patterns tab. Under Axis, click to select None, and then click OK.
    8. Double-click the Legend. On the Format menu, click the Placement tab. Under Type, click to select Bottom, and then click OK.
    9. Double-click the Emotional data line. Click the Patterns tab. Under Marker, click to select Custom. Click the Marker Style arrow, click the triangle (the third option), and then click OK.
    10. Double-click the Intellectual data line. Click the Patterns tab. Under Marker, click to select the Custom option button. Click the Marker Style arrow, click the circle (the eighth option), and then click OK.
    11. On the Chart menu, click Chart Options. Click the Titles tab. In the Chart title box, type Biorhythm Chart, and then click OK.
    In versions 5.0 and 7.0
    1. Select the following range of cells on the worksheet: C6:F35.
    2. On the Insert menu, click Chart, and then As New Sheet. Click Next.
    3. In the ChartWizard box, under "Select a chart type," click Line, and then click Next.
    4. Under "Select a format for the Line chart," click chart type 1, and then click Finish.
    5. Double-click the Y-axis. Click the Patterns tab. Under Axis, click to select None, and then click OK.
    6. Double-click the Legend. On the Format menu, click the Placement tab. Under Type, click to select Bottom, and then click OK.
    7. Double-click the Emotional data line. Click the Patterns tab. Under Marker, click to select Custom. Click the Marker Style arrow, click the triangle (the third option), and click OK.
    8. Double-click the Intellectual data line. Click the Patterns tab. Under Marker, click to select the Custom option button. Click the Marker Style arrow, click the circle (the eighth option), and then click OK.
    9. On the Insert menu, click Titles. Click to select the Chart Title check box next to Chart Title. Click OK. Type Biorhythm Chart, and then press ENTER.

REFERENCES

For more information about charting in Microsoft Excel 97, click Contents And Index on the Help menu, click the Index tab in Excel Help, type the following text

charts, creating

and then double-click the selected text to go to the "Create a chart (Microsoft Excel)" topic. If you are unable to find the information you need, ask the Office Assistant.

For more information about charting in Microsoft Excel version 7.0, click Answer Wizard on the Help menu and type:

creating and formatting charts

For more information about charting in Microsoft Excel version 5.0, click the Search button in Help and type:

chart

Modification Type:MinorLast Reviewed:8/19/2003
Keywords:kbchart kbcode kbhowto kbProgramming KB151439
©2003 Microsoft Corporation. All rights reserved.