how to choose some points of graph and make them highlight

[xyl]

hi,

   i am a learner. i am sorry to disturb you but i really need your help. there, i  build a graph and i want to choose some points of it and make them more obviously just like the picture as follow.

   thanks and best wishes for u

[MikeS81]

Hi xyl,
how many of this points do you need? You can use cursors. The attached picture shows, how it can look like.

Hope it helps.
Mike

[altenbach]

Two easy possibilities:

(1) Use the plot images property:

Open the example finder and look for the following example: Graph Plot Area Images.vi

(2) Use annotations:

look for example: Programmatically Annotate a Graph.vi

[xyl]

hi, Mike

   thanks for your answer. First of all, the points will not be the max nor min number and the quantity of the points is variable. it will be 2 or 5, it also will be more than 100, just according to the need of you .And of course , the quantity of the points will be less than the total points of the graph.  so, i think using cursors is not a best choise. Is there another method? thanks

   xyl

[xyl]

hi, altenbach

   thanks. it seems the example of  "programmatically annotate a graph.vi" has the same results as i want. but the points i choose are more than 2 and they are random. i am trying to learn how to slove the problem. thanks

  xyl

[altenbach]

---

xyl wrote:

thanks. it seems the example of  "programmatically annotate a graph.vi" has the same results as i want. but the points i choose are more than 2 and they are random. i am trying to learn how to slove the problem. thanks

---

Well, just make a subset of the datapoints that you want to annotate and then annotate them in a loop.

Seems easy enough. Are you having difficulties with this?