This screenshot shows the Graphing & List Window being used to generate sine and cosine function plots. An integral calculation is also shown for plot A.

These plots can be generated using the input parameters below. See Graphing a Function for more information.

Input | Plot A: sin(x)Plot B: cos(x) |
---|---|

Range | 0; 3pi |

Angle Mode | Radians |

No. Points | 1000 |

Notes | Click the Calc button and then select Integral of
Plot A to perform the integral calculation. |

Input | SIGN(sin(x)) + 0.2 * RAND - 0.1 |
---|---|

Range | 0; 3 |

Angle Mode | Cycles |

No. Points | 100 |

Notes | The SIGN function converts sine into a square wave, while RAND adds "noise". The noise will change each time you plot the function. |

Input | 1 / x |
---|---|

Range | -10; +10 |

Angle Mode | N/A |

Interval | 0.5 |

Notes | Use Interval, not "No. Points" so as to create a
discontinuity at x = 0 (i.e. 1 / 0 → INFINITY). |

The "equation of time" approximates the difference between the apparent time and mean time (i.e. between solar noon and noon on the clock) throughout the year. The difference is due to a combination of the obliquity of the Earth's rotation axis and the eccentricity of its orbit.

Input | 9.87 * sin (2 * 360 * (x - 81) / 364) - 7.53 * cos (360 * (x - 81) / 364) - 1.5 * sin (360 * (x - 81) / 364) |
---|---|

Range | 1; 365 |

Angle Mode | Degrees |

No. Points | 100 |

Notes |

Below is the Polar Rose — a famous polar plot that looks like a petalled flower.

Input | 8 * sin(2.5t) |
---|---|

Range | 1; 4pi |

Angle Mode | Radians |

No. Points | 200 |

Notes | Enter the above equation and select: Axes→Polar
Plot. |

Below, a scatter plot of X-Y data with a line of best fit, as determined by cubic regression analysis.

Mode | Cubic Regression (X-Y) |
---|---|

Chart | X-Y Scatter Plot Select: Chart→X-Y Data Charts→Show Regression Fit to show best fit. |

Notes | Import File: sample_xy_data.txt |

Below is a histogram generated using data in the DreamCalc SD Data List. The second chart shows a cumulative plot of the same data. The actual data values used to generate these plots can be found in the notes below.

Mode | Statistical Data (SD) |
---|---|

Chart | Histogram Select: Axes→Cumulative for the cumulative variation. |

Notes | Import File: sample_histogram_data.txt |

**Professional Edition Only**. A Normal Quantile-Quantile Plot generated using data in the DreamCalc
SD Data List. The actual data values used to generate this plot can
be found in the notes below.

Mode | Statistical Data (SD) |
---|---|

Chart | Normal Q-Q Plot (Professional Edition Only) |

Notes | Import File: sample_qq_data.txt |

**Professional Edition Only**. The chart below shows cash amounts held in the cashflow list — a separate
data list used in the financial calculations supported by the
Professional Edition of DreamCalc.

Mode | Any - cashflow data is independent of other lists. |
---|---|

Chart | Cashflow |

Cashflow | -2000, 3232, 7000, 9535, 13500, 21543, 12545, 18232, 11033, 7543, 5075 |

See also: Graphing & List Window, and Graphing a Function