# fplot2d

2D plot of a curve defined by a function

## Calling Sequence

    fplot2d(xr,f,[style,strf,leg,rect,nax])
                fplot2d(xr,f,<opt_args>)

## Arguments

xr

  vector.

f

  external of type `y=f(x)` i.e. a scilab function or a dynamically linked routine referred to as a string.

style,strf,leg,rect,nax

  see `plot2d`

<opt_args>

  see `plot2d`

## Description

`fplot2d` plots a curve defined by the external function `f`. The curve is approximated by a piecewise linear interpolation using the points `(xr(i),f(xr(i))`. The values of f(x) are obtained by `feval(xr,f)`.

Enter the command `fplot2d()` to see a demo.

## Sample

fplot2d();

## Examples

    deff("[y]=f(x)","y=sin(x)+cos(x)")
    x=[0:0.1:10]*%pi/10;
    fplot2d(x,f)

deff("[y]=f(x)","y=sin(x)+cos(x)") x=[0:0.1:10]*%pi/10; fplot2d(x,f)

    clf();
    deff("[y]=f(x)","y=sin(x)+cos(x)")
    x=[0:0.1:10]*%pi/10;
    fplot2d(x,f)
    fplot2d(1:10,'parab')

deff("[y]=f(x)","y=sin(x)+cos(x)") x=[0:0.1:10]*%pi/10; fplot2d(1:10,'parab')

## See Also

- plot2d
- feval
- paramfplot2d