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Define Curves Panel - 3-D Plot

Define Curves Panel - 3-D Plot

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Define Curves Panel - 3-D Plot

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Existing curves can be edited individually and new curves can be added to the current plot using the Define Curves panel, curvesCreate3D-24.  The Define Curves panel also contains HyperGraph 3D's curve calculator.

define_curves_panel_3D

Define Curves panel

hmtoggle_plus1greyCreating and Defining Curves

The Define Curves panel enables you to edit existing curves and create new ones.  To edit a curve, it must first be selected either from the Curve list or picked from the window.

The X, Y, Z, U, and V vectors are displayed in the Expression = field of the Define Curves panel.  Select the X, Y, Z, U, or V vector radio button, or the All button under Vector, to view and modify each vector.

New data can be selected from a source file, mathematically defined using the program's curve calculator, or entered as values.  The Define Curves panel options change depending on which source is selected.

Option

Description

Curve List

The Curve list displays the names of all curves in the active window.  Curves can be renamed, added, cut, copied, and pasted using the curve list controls.

If you select a curve from the list, its name is displayed in the text box above the list.

Individual curves can be turned on or off.  To turn a curve off, select the curve from the list or pick the curve from the window and deactivate the check box next to the curve name above the Curve list.  To turn a curve on that was turned off, activate the check box.

The Cut, Copy, Paste, and Add buttons are used to maintain the curve list for the active window.  Curves can be copied and pasted into other windows.  Curves can also be added and deleted from the list.

If you select Waterfall from the curve type menu, an additional Add Slice button is displayed.  When the curve type is set to waterfall, Add adds a new waterfall plot and Add Slice adds a new slice.

Curve Type drop-down menu

Select the type of curve that you want to define.

Select Line to display, add or edit 3D line curves.

Select Surface to display, add, or edit surface curves.

Select Waterfall to display, add, or edit waterfall curves.

Vector

Select the X, Y, Z, U, or V curve vector from the list.

Click All to display the All dialog and edit each curve vector.

Source

Curves are comprised of X, Y, Z, U, and V data vectors.  Vectors for 3D line curves can be defined from files, math expressions, or the values table.  Waterfall and surface plots can only be defined from math expressions.  The vectors of a curve do not have to come from the same source.  For instance, the data source for the X vector of a curve can be an ASCII file and the source for the Y vector of the same curve can be defined by an expression, such as sqrt(x).

•File - If File is selected as the source, the file options are displayed, allowing you to select data files for the X, Y, Z, U, and V vectors.
•Math - If Math is selected as the source, the curve calculator is displayed, allowing you to define the vector mathematically.

See Curve Calculator for more information on defining vectors mathematically and signal processing.

•Values - If Values is selected as the source, the Values table is displayed, allowing you to directly enter data point values.

You can cut, copy, paste, and insert data point values to the table.  Click the expansion button, exp-button, to view a larger dialog containing all data points.

Apply

Click Apply to define the curve(s).
hmtoggle_plus1greyReferencing Curves

Expressions can reference any curve or vector in the current session.  Curve vector references can be defined by picking the curve with the mouse or by using the following syntax:

pmwnco.vector

where:

m is the number of the page on which the curve resides

n is the number of the window which contains the curve

o is the number of the curve in the window

vector indicates the X, Y, or time vector of the referenced curve

For example, p2w1c3.y references the Y vector (.y) of the third curve (c3), in first window (w1), on the second page (p2).

When a referenced curve is edited or updated, the curves that reference that curve are updated as well.

The Curves dialog allows you to view the curves on a particular page within a session.

 

How do I...

hmtoggle_plus1Display the Curves dialog:
1.Under Source, select Math.
2.Click Curves....

The Curves dialog contains a tree structure that displays the current session and its pages, windows, and curves.

3.From the Show Curve dialog, click Preview to preview any curve in the session.

 

Add a curve.

Copy a curve from the active window.

Copy and paste data point values.

Cut a curve from the active window.

Cut data point values.

Edit a curve whose data source is a file

Insert data point values.

Paste a curve into another window.

Rename a curve.

Turn a curve on or off.

Use a file as a data source.

Use math as a data source.

Use values as a data source.