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h2. Name

cur — Draw a spline curve

h2. Syntax
{panel:|borderStyle=solid|borderWidth=1|bgColor=#FFFFAA}

*cur* \[_size_ | *lin*] \[*sav*] \[*num*] \[*nodraw*] 

{panel}

h2. Description

Display a line dataset by generating a spline tube or line through the points. 

h2. Arguments

_size_ 
{indent}_size_ is a real number determining the thickness of the tube, relative to 1.{indent}
*lin* 
{indent}Draw the spline as a line instead of a tube.{indent} 
*nodraw* 
{indent}Just generate, do not display the spline. Use together with *sav*.{indent} 
*num* _number_ 
{indent}The integer _number_ gives number of points in the spline.{indent} 
*sav* 
{indent}Save the spline points in active.{indent} 

h2. Examples

h3. Ex.1: Draw a curve through data points

{noformat:|borderWidth=1|bgColor=#eeeeee}
        win demo          ;# Get demo window (450000 460000 6450000 6460000 1000 4000)
        spe bgc whi       ;# Specify background color to white
        mak ran 7         ;# Make 7 random points
        poi 2             ;# Display the points with size 2
        cur 2             ;# Draw a spline curve with size 2
{noformat}

The above example produces this image. 

!att:_img_ref^xxxref^cmd_cur.png|thumbnail,border=1,width=200!
_Spline curve_

h2. See also

[bsp], [mak] lin dis, [spl], [tub]