Ask about In The Works

[MeteoOudkarspel]

Hi boris,

Come nlbarotrend option in the new update?


introduces simple trend analysis on time series data. New selectors are named delta1, delta2, ..., delta60, delta1h, delta2h, ..., delta24h which represents the difference between the current value of the sensor compared to the sensor value 1, 2, ..., 60 minutes or 1, 2, ..., 24 hours ago. A negative delta value indicates that sensor value has decreased. In order to put this into categories meaningful for air pressure trends, a converter "barotrend" is defined that results to -2, -1, 0, 1, 2. Converter "enbarotrend" reports the trend in English synonyms FF (falling fast = -2), FS (falling slowly = -1), ST (stable = 0), RS (rising slowly = 1), RF (rising fast = 2). Threshold levels are explained in the template section of the wiki. Example: "[thb0seapress-delta1h=barotrend:0]" returns "1" when pressure has slightly (0.3 to 0.6 inHg) increased over the last hour. "[thb0seapress-delta3h=:--]" returns "ST" when pressure difference between now and 3 hours ago is in -0.3 to 0.3 inHg range.

[admin]

what abbreviations would you like for NL?

[wsnoordbergum]

Hello Boris.

A suggestion could be:
-2 snel dalend
-1 dalend
0 stabiel or bestendig
1 stijgend
2 snel stijgend

This will save a lot of programming for some sites.

Maybe other dutch users have different suggestions.

Gr. wsNoordbergum

[admin]

ok, I will make it part of the next update... Until someone chimes in to tune the phrases.
I can't say, as Dutch is not a language a have mastered, I still struggle with basic English

[wsnoordbergum]

Thanks for implementing the nlbarotrend converter on such a short notice!

Gr. wsNoordbergum

[wsnoordbergum]

Seems to me that the either the barotrend converter isn't working or I've made a mistake.
The trend page on my website says rising, but meteobridge nlbarotrend says dalend, and in english enbarotrend FS.
It should be either RS or stijgend.
I tried both [thb0seapress-delta60=nlbarotrend:---] and [thb0seapress-delta60=enbarotrend:---]
I've also tried delta2h selector, but it keeps stuck on FS or dalend.
It hasn't changed since I've implemented the converter (now a few days ago).

Maybe a bug?

Gr. wsNoordbergum

Edit:
In the releasenotes the following quote:

released November 7, 2015

introduces simple trend analysis on time series data. New selectors are named delta1, delta2, ..., delta60, delta1h, delta2h, ..., delta24h which represents the difference between the current value of the sensor compared to the sensor value 1, 2, ..., 60 minutes or 1, 2, ..., 24 hours ago. A negative delta value indicates that sensor value has decreased. In order to put this into categories meaningful for air pressure trends, a converter "barotrend" is defined that results to -2, -1, 0, 1, 2. Converter "enbarotrend" reports the trend in English synonyms FF (falling fast = -2), FS (falling slowly = -1), ST (stable = 0), RS (rising slowly = 1), RF (rising fast = 2). Threshold levels are explained in the template section of the wiki. Example: "[thb0seapress-delta1h=barotrend:0]" returns "1" when pressure has slightly (0.3 to 0.6 inHg) increased over the last hour. "[thb0seapress-delta3h=enbarotrend:--]" returns "ST" when pressure difference between now and 3 hours ago is in -0.3 to 0.3 inHg range.

Seems to me that the difference of 0.3 inHg is to great (=10hPa) it should be 10 times smaller, 0.03 inHg (1hPa).
So no wonder that the value doesn't change a lot.
If a difference of 10 hPa occurs... stormy weather...

[admin]

You are right, that was a copy&paste error on my side. Thresholds will be 0.03 (resp 0.06) inHg in the next update.

[wsnoordbergum]

Thanks a lot.

Gr. wsnoordbergum