Sorry, I neglected to provide this link to the development site in the post above.
http://www.lablibrary.com/ss/ Bob On Monday, February 20, 2017 at 2:09:20 PM UTC-8, tempus wrote: > > The gauges show both average and gust data, neither of which are 'fake > weather.' Peak gusts are important to aircraft pilots and mariners. They > also are important to analyzing and predicting changing weather > conditions. Wind speeds and directions averaged over various past time > intervals, ranging from minutes to months or even years are important to > other kinds of analysis. > > I have temporarily enabled public access to a software development site > where you can see gauges updating at 3-second intervals, although the wind > is very light right now and not as interesting as it often is. If website > visitors think near-real-time weather information is interesting after the > presentation is finished, they will be able to watch it. If they don't, > they will be free to ignore it and get their weather information somewhere > else. Some people will see value in near-real-time information. Others > won't. > > Bob > > On Monday, February 20, 2017 at 11:53:51 AM UTC-8, Andrew Milner wrote: >> >> @ tempus: >> >> 1. Windspeeds do indeed change rapidly, which is why there is usually a >> 10 minute averaging period to cover reported wind speeds. >> >> Measuring gusts and wind intensity >> >> Because wind is an element that varies rapidly over very short periods of >> time it is sampled at high frequency (*e**v**e**r**y 0.25 sec*) to >> capture the intensity of gusts, or short-lived peaks in speed, which >> inflict greatest damage in storms. The gust speed and direction are defined >> by the maximum three second average wind speed occurring in any period. >> >> A better measure of the overall wind intensity is defined by the average >> speed and direction over the ten minute period leading up to the reporting >> time. Mean wind over other averaging periods may also be calculated. A gale >> is defined as a surface wind of mean speed of 34-40 knots, averaged over a >> period of ten minutes. Terms such as 'severe gale', 'storm', etc are also >> used to describe winds of 41 knots or greater. >> >> >> 2. What cobblers - rapidly changing gauges could be reporting conditions >> now, 5 minutes ago, an hour ago - or even yesterday. They do not >> demonstrate or prove anything apart from maybe the speed of an internet >> connection. If one can have 'fake news', one can have certainly have 'fake >> weather' also!!!!!!! >> >> >> >> >> >> On Monday, 20 February 2017 20:57:26 UTC+2, tempus wrote: >> >>> 1) Wind speed and direction data tends to change radically from >>> second-to-second and is interesting to watch, especially in coastal areas >>> where high wind speeds often cause significant property damage and even >>> loss of life. >>> >>> 2) Rapidly changing gauges quickly demonstrate to website visitors that >>> they are in fact watching near-real-time data. >>> >>> Bob >>> >>> On Monday, February 20, 2017 at 10:23:14 AM UTC-8, Andrew Milner wrote: >>>> >>>> I would prefer to ask the questions - why am I providing 3 second >>>> updates? What practical value do 3 second updates have for most users?? >>>> What is the point?? >>>> >>>> >>>> >>>> On Monday, 20 February 2017 19:33:27 UTC+2, tempus wrote: >>>> >>>>> This is merely a suggestion for consideration. >>>>> >>>>> Space characters are commonly used within and between key-value pairs >>>>> in associative arrays to improve human readability. Because >>>>> 'gauge-data.txt' human-readability isn't important, the file could be >>>>> reduced in size 158 bytes, plus another 15 bytes if spaces after commas >>>>> in >>>>> the "WindRoseData" string were removed, which would make the file 10 >>>>> percent smaller. >>>>> >>>>> 173 bytes doesn't seem like much. However, with 3-second updates there >>>>> will 86400 / 3 = 28,800 file transmissions per day to each concurrent >>>>> user. 28,800 x 173 bytes = 4,982,400 unnecessary bytes-per-day-per-user. >>>>> >>>>> It is not uncommon for individual pages at active websites to have large >>>>> numbers of concurrent visitors, so why waste the bandwidth and processing >>>>> time? >>>>> >>>>> Bob >>>>> >>>> -- 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 weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
