pdeellip

Draw ellipse in PDE Modeler app

Syntax

pdeellip(xc,yc,a,b,phi)

pdeellip(xc,yc,a,b,phi,label)

Description

pdeellip(xc,yc,a,b,phi) draws an ellipse with the center at (xc,yc), the semiaxes a and b, and the rotation phi (in radians). The pdeellip command opens the PDE Modeler app with the specified ellipse drawn in it. If the app is already open, pdeellip adds the specified ellipse to the app window without deleting any existing shapes.

pdeellip updates the state of the geometry description matrix inside the PDE Modeler app to include the ellipse. You can export the geometry description matrix from the PDE Modeler app to the MATLAB^® Workspace by selecting DrawExport Geometry Description, Set Formula, Labels.... For details on the format of the geometry description matrix, see decsg.

pdeellip(xc,yc,a,b,phi,label) assigns a name to the ellipse. Otherwise, pdeellip uses a default name, such as E1, E2, and so on.

Examples

Draw Ellipse in PDE Modeler App

Open the PDE Modeler app window containing an ellipse with the center at (0,0) and the semiaxes 1 and 0.3. Rotate the ellipse by $\pi /4$ counterclockwise.

pdeellip(0,0,1,0.3,pi/4)

Call the pdeellip command again to draw an ellipse with the same center and semiaxes, but rotate it by $\pi /2$ counterclockwise. The pdeellip command adds the second ellipse to the app window without deleting the first.

pdeellip(0,0,1,0.3,pi/2)

Assign Name to Ellipse in PDE Modeler App

Open the PDE Modeler app window containing an ellipse with the center at (0,0) and the semiaxes 1 and 0.3. Rotate the ellipse by $\pi /4$ counterclockwise. Assign the name ellipse1 to this ellipse.

pdeellip(0,0,1,0.3,pi/4,"ellipse1")

Input Arguments

xc — x-coordinate of center

real number

x-coordinate of the center of the ellipse, specified as a real number.

Data Types: double

yc — y-coordinate of center

real number

y-coordinate of the center of the ellipse, specified as a real number.

Data Types: double

a — Semiaxis

positive number

Semiaxis of the ellipse, specified as a positive number.

Data Types: double

b — Semiaxis

positive number

Semiaxis of the ellipse, specified as a positive number.

Data Types: double

phi — Rotation

real number

Rotation of the ellipse, specified as a real number. The rotation value is measured in radians.

Data Types: double

label — Name

character vector | string scalar

Name of the ellipse, specified as a character vector or string scalar.

Data Types: char | string

Version History

Introduced before R2006a