Topic: Zambretti Forecaster Algorithm in php

[SLOweather]

I posted this link in another topic, http://www.meteormetrics.com/zambretti.htm and then actually read it. It's a very good explanation of how a Zambretti forecaster works...



and how to implement one in code. It might be fun to try it in PHP. Wait, never mind...

https://github.com/JonnyHonda/phpWeather/blob/master/zambretti.inc.php

A Zambretti algorithm is what companies like Davis use to create the console forecast. I think maybe Davis has enhanced it some.

[PaulMy]

On another forum, some initial Zambretti scripting evolved to http://sandaysoft.com/forum/viewtopic.php?f=14&t=9901&hilit=zambretti&start=255

I have a modified version on my website www.komokaweather.com and www.komokaweather.ca.

Paul

[nincehelser]

Pretty cool.  I just ordered the paper version from here: http://www.shipwreck2000.freeserve.co.uk/

However, I'd really like to find one like this:


http://www.whitbyweather.com/index.php?p=1_56_Zambretti-Forecaster

[nincehelser]

Pretty cool.  I just ordered the paper version from here: http://www.shipwreck2000.freeserve.co.uk/

However, I'd really like to find one like this:


http://www.whitbyweather.com/index.php?p=1_56_Zambretti-Forecaster

Got my order today.  It's pretty cool. 

It arrived in about a week in the US from England.  Cost 6 British pounds via PayPal.  I guess that's around $10 US.  (I'm not sure why it cost me less than the web site indicates.)

It's smaller than I imagined, but it fits in my hand nicely. Reading glasses are a must (*ugh* I usually don't need them).   Dials are stiff to turn, but perhaps that's a plus.

So far the forecasts seem legit, though I've just used it one time. 

[SLOweather]

I'd like to SEE & understand the algorithm that goes into that Zambretti Forecaster program.

Look at the link in the top post...

http://www.meteormetrics.com/zambretti.htm

[nincehelser]

I'm kind of surprised humidity isn't factored in somehow.

I suppose the mechanical dial method doesn't lend itself to additional inputs, but I wonder if manufacturers like Davis have improved the forecasts with additional data?

[pcborges]

Hi, I am designing an App that will collect localized weather info (temperature, pressure, humidity, timestamp and altitude) and post it to a mysql database.
On that database there will be a field dedicated to weather prediction that will be filled by the $z_forecast (as per zambretti.inc.php)
Problems I have:
1: How to adjust it for other countries?
2: In the project there is no provision to get wind information. Is there a way to make a good estimation with no wind info?
3: There have to a be a way to adjust seasons according to global positioning (I will also have GPS data)
The idea is that a php script will run against the latest database data and come out with a sort of $z_forecast so it can be displayed to users.
Thanks in advance
Paulo