> On Apr 16, 2017, at 9:56 PM, Andrew Milner <[email protected]> > wrote: > > Aha - I think I see ... the graph shows the layman's "calm before the storm" > - after the storm has passed!!
Right, it's not meant to be predictive. > But the wind alone shows that (from steady low to increasing) - as does the > change in pressure alone (from falling to rising). Sure, but it's interesting to see how the wind and pressure correlate. > What would be interesting would be to know the locations of high and low > pressure in relation to the measuring station location .... Agreed that would indeed be interesting. Here's the live chart by the way: http://sinkingsensation.com/weather/daywindbarometer3.png > > Guess I'll just put my head back in the sand where it belongs .... > > > >> On Monday, 17 April 2017 07:42:04 UTC+3, Alec Bennett wrote: >> >> >>> On Sun, Apr 16, 2017 at 7:05 PM, Thomas Keffer <[email protected]> wrote: >>> Sorry, but it is not possible. >>> >>> It's been asked for many times, but would require a pretty substantial >>> rewrite of weeplot, as well as some creative use of ConfigObj. >>> >>> Your hack is actually not so crazy. >> >> Well alright then, liberal amounts of duct tape have been applied! See >> attached. >> >> >> >> I still need to clean it up a bit and maybe not show gusts as well, and >> change the color scheme, but that's the work in progress. >> >> > It's been asked for many times >> >> In that case I'll mention that my method was to edit genplot.py and >> imagegenerator.py so if a filename has "-trans" in it, it builds just the >> plot line on a transparent background with no labels. And every time a >> regular graph is built it searches for a file with the same name but >> "-trans" appended to it, and if found pastes it over the current graph. So >> in the above example it built a transparent version of the barometer graph >> with no labels and then pasted it over the wind graph. It's a kludge but it >> works, and it required as little hard coding of parameters that I could >> think of. >> >> Let me know if there's interest and I'll post this hack to my github page, >> but fair warning it's *very* hacky, and currently it doesn't have the >> ability to draw the Y axis labels for the 2nd item (in this case the >> barometer). And of course it's not a regular user extension so it'll get >> overwritten with any weewx updates. >> >> > Just out of curiosity - is there a specific reason for plotting >> > windspeed/wind gust together with pressure? >> >> So we can see fronts moving through, which affect the wind speed, or so our >> theory goes. Together with the wind direction vector chart, which is shown >> right below this in the iOS app I'm working on, people can get a good idea >> of weather changes with just two graphs. At least that's our theory. And a >> biggie for us is that we're duplicating some functionality from the Bodega >> Marine Lab near us (run by the University of California at Davis), which has >> this same chart. >> >> >> >> But >> >> >> >> >> > > -- > You received this message because you are subscribed to a topic in the Google > Groups "weewx-user" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/weewx-user/2FFE87-xqFU/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
