[HELP] Plotting readings on graph dynamically

[lamerboy]

Hi,

I am writing an application that can sense the surrounding temperature.

I am thinking to plot the different temperature readings through a dynamic graph(if this is the correct term), every few seconds or even 1 minute.
Like for eg, 3.47pm, temperature reading is 27 degrees, 3.48pm is 28 degrees. 3.49pm is 28.5 degrees and so on and so forth...
The graph will be able to display the temperature (perhaps on the y axis) while the time on the x-axis.

Could anyone give me advise on this? I tried searching on Google but mostly I found are those that are cos/sin graphs.

Thanks,
Daniel

ps: I am using framework 3.5

[rliq]

I've done some plotting of ECG's before, however in my case I had all of the data up front. I created and Image on the fly and then obtained it's Graphics and plotted the data accordingly. Then saved the image to a file for displaying on a web page.

Off the top of my head, I suggest your form has a picture box with an initial image that maybe just contains a grid and each 'minute' you obtain the image, get it's Graphics, plot the new point and then Invalidate() the PictureBox.

If you know how many minutes fit on the Image, you could keep a buffer of previous values and then each time around, completely replot the image before the invalidate. This may give the illusion of the plot moving right to left. If you decide to do this more rapidly, check out the DoubleBuffer... property.

I can post a bit of code on Monday, just don't have my Dev machine here right now!