Engineering Solutions

Edit Curves panel

Edit Curves panel

 Previous topic Next topic Expand/collapse all hidden text  

Edit Curves panel

 Previous topic Next topic JavaScript is required for expanding text JavaScript is required for the print function  

Use the Edit Curves panel to create new curves or edit existing ones. Each vector can be defined using either a data file or a math expression.  For example, the data source for the x vector could be a file, and the data source for the y vector could be a math expression.  The data sources for the x and y vectors are displayed in the x = and y = fields.

 

Subpanels and Inputs

The Edit Curves panel contains the following subpanels:

hmtoggle_arrow1Create

Panel Inputs

Input

Action

plot

Select the plot on which to create the curve.  An untitled plot is created if no plot currently exists.

x / y

Displays the data sources for the x and y vectors once they are selected.

file

Use this radio button if you want have a file that contains your curve data.

type

Data type.

Appears when file is selected. Click the button to view a list of the available data types, or click the + or - at the end of the field to scroll through the list forward or backward one type at a time.

req

Data request set.

Appears when file is selected. Click the button to view a list of the available requests, or click the + or - at the end of the field to scroll through the list forward or backward one type at a time.

comp

Component

Appears when file is selected. Click the button to view a list of the available components, or click the + or - at the end of the field to scroll through the list forward or backward one type at a time.

math

Use this radio button if you want to use a math expression for your curve data.

Math functions are listed in the Math Reference section of the online help.

The math expression must evaluate to an array.

 
hmtoggle_arrow1Modify

Use the Modify subpanel to edit an existing curve by changing the data source for the x or y vector or by applying a mathematical expression.

To access the x and y vectors of a curve, you must indicate the curve number and the x or y vector, in the format, c#.vector:  For example:

c1.x        To reference the x vector of curve 1.

c1.y        To reference the y vector of curve 1.

If you try to reference a curve that has not been created with this panel, a pop-up window appears with the message, "This curve has no defined source.  Convert to math curve?"  Respond by clicking Yes or No.  If the selected curve has too many points, it cannot be converted.

Example:

x = 0:6.14:.01

y = sin (x)

HM_Panels_bmp00103

Example 2:

x = c1.x

y = polyfit(c1.x, c1.y, 3)

HM_Panels_bmp00104

 

Panel Inputs

Input

Action

curve

Select the curve to modify.

x / y

Displays the data sources for the x and y vectors once they are selected.

file

Use this radio button if you want have a file that contains your curve data.

type

Data type.

Appears when file is selected. Click the button to view a list of the available data types, or click the + or - at the end of the field to scroll through the list forward or backward one type at a time.

req

Data request set.

Appears when file is selected. Click the button to view a list of the available requests, or click the + or - at the end of the field to scroll through the list forward or backward one type at a time.

comp

Component

Appears when file is selected. Click the button to view a list of the available components, or click the + or - at the end of the field to scroll through the list forward or backward one type at a time.

math

Use this radio button if you want to use a math expression for your curve data.

Math functions are listed in the Math Reference section of the online help.

The math expression must evaluate to an array.

 

 

See Also:

Alphabetical List of Panels