My first message here !
I wonder if anyone has tried to plot a graph from the SG-view data ? As wick1ert said :


It is nice to see the numerical data displayed (I use an older Laptop for the data collection) - but it would be more informative if a graph could be generated that shows the up and down of the instantaneous power generation as well as the cumulative power generated over a day.
I envision a program that updates the display from the collected data at intervals. I do generate (normally) a graph at the end of a day using Excel, see example attached. My SG view is set up to sample every 120 sec (I had it sample initially more often, but find it not necessary).

On my graph one can see the shadow of some large trees causing the power output to drop as the shadow wanders over the panels since there is a gap between 3 + 3 panels (this shadow will disappear once the sun's angle is > 35 degrees. [I check the sun's angle here :
http://www.timeanddate.com/worldclock/a ... ay=1&n=283 ]

To be useful for different system sizes, the scale limits of the plot for the DC Watt (left scale) and the cummulative Wh (right scale) would have to be selectable ....
Since I am not well versed in programming I thought I ask if some of you have done this - Thanks !
[ I did not see the graph in the preview - so far I was not able to attach it : What is the trick here ? ]

another nice (at least informative) link for a live graph is:
http://oc.wireless.net/solar

I have a static one, just paste the log into the spreadsheet:
http://www.mike-burgess.org/images/MB_May-3-2007.htm
at the very bottom, are the three excel tabs

I have a whole series of daily and monthly graphs on my website, all generated from the daily SG-View logs, using some custom scripts I wrote, that rely on the pChart library for PHP (and a few other things, details on the "How did you make this website?" page of the site).

http://www.yourturn.ca/solar/our-system ... -and-logs/

--Julian