finding y-intercept of graph at any point

[gargrahul]

hello : )

    im attaching a simple vi of xy graph in the attached file..

an array of x-axis and y-axis points is also shown..

now i want to find the y-coordinate (y-intercept) of the graph plot at any x-axis point..

i have used cursor for this which works very well for x-axis values defined using arrays..  the problem is it does not shows the right amplitude for x-axis value not defined using array

eg.:- it shows amplitude of x-axis point 5 as 8 but for 5.4 also it shows amplitude as 8 which is not correct..

so is there any way or alternate method to find the y-intercept precisely

[GerdW · Accepted solution]

Hi gargrahul,

try this:

Keep in mind: the X values have to sorted in order to have this piece of code giving you the correct Y value…

[gargrahul]

GREAT GREAT GERDW !!! IT WORKS PERFECTLY WITH REGARDS, RAHUL GARG