grid snapping in xy graph

[mazhar.ali]

hi

 i want to snap the grid in xy graph

i am plotting graph using mouse down event

now i want to snap grid on mouse down(means if i click any where the point will be entered on nearest grid)

regards

mazhar

[smercurio_fc · Accepted solution]

That doesn't sound too difficult. In your Mouse Down event you should first use the Map Coordinates to XY method to (a) verify the user clicked in the plot area (as opposed to a click on a scale), and (b) get the XY point. Then, you can use the <X/Y>Scale.Range.Increment and/or the <X/Y>Scale.Range.Minor Increment preoperties to coerce your number to the grid depending on whether you want to snap to the major grid or to the major and minor grid. This latter part is just math.

[mazhar.ali]

thanx man

give me example vi.

[smercurio_fc]

Gee, and you ask so nicely, too.

Why don't you try it yourself first? Though I see you've asked this question before.

[mazhar.ali]

thanx smercurio

may be i have not describe my problem clearly.

let me explain first  the link of my post you reffered  the main problems of that post are two constant because when i change size of my graph i loose alignment of the cursor and entered position. after some time and debuging i fix that and make it generic(mean if some one change graph size the alignment will not take effect) see the property which replace that constant.

Message Edited by mazhar.ali on 02-18-2009 03:54 AM

Message Edited by mazhar.ali on 02-18-2009 03:56 AM

Message Edited by mazhar.ali on 02-18-2009 03:59 AM

[mazhar.ali]

now in this post i want to set my coordinate(mouse down value) to the narest grid on xy graph

xy graph has multiple plots in my case(data type of graph is array of clusters containing two arrays x array and y array)

it seems that your reply is correct but can you eloborate more and you also talked about some "math" plz tell me more because that was insufficient for me

thats why i have asked about example vi  

 thanx in advance

regards

mazhar

[mazhar.ali]

really smart answere thanx semercurio_fc

similarly for Y point.

after short practice i got the "math" and fix my problem.

i think you are "Jin" .

regards

mazhar

Message Edited by mazhar.ali on 02-18-2009 06:04 AM

[smercurio_fc]

Um, err... It seems that I may have been responding to your queries telepathically because I certainly don't remember giving you the final answer. It does appear that you have the solution, though.

[mazhar.ali]

yesterday  i didnt feel like thinking

[smercurio_fc]

Yeah, that happens to me more often than I care to admit.