datatipCreate Create a datatip on a polyline by program

## Syntax

    datatip_handle = datatipCreate(polyline_handle,index)
                datatip_handle = datatipCreate(polyline_handle,pt)

## Arguments

polyline_handle

  A handle on a polyline

index

  The index of a polyline data point where to draw the data tip.

pt

  A vector with 2 or 3 elements, the coordinates of the point where to draw the data tip.

datatip_handle

  The handle on the newly created entity

## Description

This function can be used to create datatips on a polyline by program. Called with an index as second argument, it sets the tip at the coordinates given by polyline point specified by the index. Called with a point as second argument it sets the tip at the coordinates corresponding to the orthogonal projection of the point on the polyline if the interpolation mode is on or to the nearest mesh point.

## Examples

        x=linspace(0,1,9)';
        y=x.^3;
        clf();
        plot(x,y);
        e=gce();p=e.children(1);//get the handle on the polyline
        p.mark_mode="on";p.mark_style=2;p.mark_size=12;
        t=datatipCreate(p,5);

        datatipCreate(p,[0.65,0.3]);

x=linspace(0,1,9)'; y=x.^3; plot(x,y); e=gce();p=e.children(1);//get the handle on the polyline p.mark_mode="on";p.mark_style=2;p.mark_size=12; t=datatipCreate(p,5); datatipCreate(p,[0.65,0.3]);

## See also

- datatips
- datatipMove