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  #1  
Old 26-09-2008
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Charting a curve in real time

Hi,

My problem is this, I draw random numbers with a timer that I rule as I want to have a curve with these points in the style of the task manager of windows but I do not know at all how. I went to see with my buddy google but I am not getting the right keywords.
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  #2  
Old 26-09-2008
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How you want to draw it? In what techno ?
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  #3  
Old 26-09-2008
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I do not know precisely how to plot
It's visual basic.
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  #4  
Old 26-09-2008
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Well you can do something with Excel man?
If you arrive to retrieve data, you still have to make a graph.

Edit: Ah, in real time... well, I do not know how we can do.
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  #5  
Old 26-09-2008
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With pure-data? director (shockwave)? flash?
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  #6  
Old 26-09-2008
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Ha, this interests me too.
With excel, setting the checker every minute if the size of the file has changed or the length of the column, and if he / she has changed again....draw.
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  #7  
Old 26-09-2008
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You want to do this in vb6, vb. vba or net? Is not really the same thing
You need basic math, the polynomial, to a poly of 3rd degree eg (ax bx ? ? + + cx + d); and you can use the Picturebox to draw your widgets.
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  #8  
Old 26-09-2008
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Quote:
Originally Posted by MindSpace View Post
You want to do this in vb6, vb. vba or net? Is not really the same thing
You need basic math, the polynomial, to a poly of 3rd degree eg (ax bx ? ? + + cx + d); and you can use the Picturebox to draw your widgets.
Hmm... It looks less simple than I thought. It's vb.net
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  #9  
Old 26-09-2008
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Quote:
Originally Posted by MindSpace View Post
You want to do this in vb6, vb. vba or net? Is not really the same thing
You need basic math, the polynomial, to a poly of 3rd degree eg (ax bx ? ? + + cx + d); and you can use the Picturebox to draw your widgets.
I did not understand why polynomials, does it not ask the (VA's) one after the other?
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  #10  
Old 26-09-2008
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Lay the points... mmmh the accounts you ask how mainly relate? The equation of a line to remind qqc ca te? and a curve?
It will have to calculate the coordinates at every intermediate point along the y-axis for a coordinated x.
Hence you need to know what you want as having "style" curve, between points. Given that after what I understood, it is not enough to put the points, they must link together.
So already, whether they should be linked or not, how reunite link:
right, then there's an object to connect vb just 2 point
curve: there's certainly something with vb, but it might be very very very ugly Hence the necessity of having to repeat the same.

Obviously, I do not know exactly the data or what would be obtained as a result.
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  #11  
Old 29-09-2008
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Quote:
Originally Posted by absolute55 View Post
Given that after what I understood, it is not enough to put the points, they must link together.
If you put the points after another it should not do? The goal is not to obtain a curve, but a chart tracking the evolution of something.
(edit: yes in fact will not even connect the dots)

Given the complexity of the sudden something I looked a little about. And there is no need to curve I was persuaded otherwise because the teacher has done but hey, it's probably an extra for those who are very strong and therefore hours ahead. Still thank you. Trying to finish what I have to do and I'll go see the teacher for the curve.
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  #12  
Old 29-09-2008
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OK absolute55, I just follow you in your approach. Is to end a draft study that
Sound macro excel check that the length of the column and update the chart should be sufficient, after it is true that your method is good but it is a complete application must leave.
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