datatipSetDisplay

Set the function used to compute the datatip string.

Calling Sequence

datatipSetDisplay(curve_handle,fun)
datatipSetDisplay(curve_handle)

Arguments

:tip_handle A handle on a datatip. :

:fun A variable that contains a function (type==11 or type==13). This

function calling sequence must be str=fun(curve, pt, index) where curve is the handle of the polyline associated with the datatip, pt is the vector of datatip coordinates and index is the mesh point index of the datatip point or the index of the previous mesh point if interpolation is allowed. This function must return a string or a vector of strings in str.

:

Description

Set the function used to format the text to be displayed at the datatip point.

Examples

x=`linspace`_(-1,1,1000);
`clf`_()
`plot`_(x,`sinc`_(20*x),x,1-x^2);
e=`gce`_();e=e.children;
d21=`datatipCreate`_(e(2),600);
d22=`datatipCreate`_(e(2),200);
d1=`datatipCreate`_(e(1),700);

function str=mydisplay(curve, pt, index)
   str=`msprintf`_('sinc(%-0.2g)=%-0.2g', 20*pt(1),pt(2))
endfunction
datatipSetDisplay(e(2),mydisplay)

The display function can also be used to place tip text in different locations:

function str=infodisplay(curve, pt, index)
   `xinfo`_(`msprintf`_('x=%0.2g,\t 1-x^2=%0.2g', pt(1),pt(2)))
   str=''
endfunction
datatipSetDisplay(e(1),infodisplay) //tip text displayed in the info bar

See Also

• datatips Tool for placing and editing tips along the plotted curves.
• datatipSetOrientation Set the position of the text box associated with the given tip.