(01.10.2017, 14:57)Erwin van der Zwart Wrote: Hi,


Yes you could do it but this option is depending on your received dataset, i checked yours but in this dataset you got back it's givving you timeframes of 6 hours, so you cant use that, i would search for a more detailed weather API ..

BR,

Erwin

(08.01.2019, 16:21)Thomas Wrote: Thank you Admin
If someone is interested in then there's yrno script below (warning: uses obsolete API)
Function minmax_temp_tomorrow returns lowest and highest temperature for tomorrow. The script is simple and ignores time shift.

Code:

require('socket.http')

forecast = {}

function parsetag(parser, tag, attributes)
 if tag == 'time' then
   table.insert(forecast, {})
   forecast[ #forecast ].from=attributes.from
   forecast[ #forecast ].to=attributes.to
   forecast[ #forecast ].period=attributes.period
 elseif tag == 'symbol' then
   forecast[ #forecast ].symbol = attributes.name
 elseif tag == 'precipitation' then
   forecast[ #forecast ].precipitation = attributes.value
 elseif tag == 'windDirection' then
   forecast[ #forecast ].wind_direction = attributes.code
 elseif tag == 'windSpeed' then
   forecast[ #forecast ].wind_speed = attributes.mps
 elseif tag == 'temperature' then
   forecast[ #forecast ].temperature = attributes.value
 elseif tag == 'pressure' then
   forecast[ #forecast ].pressure = attributes.value
 end
end

function yrno_fetch()
 local url = 'http://www.yr.no/place/Czech_Republic/Prague/Prague/varsel.xml'
 local data, err = socket.http.request(url)

 if data then
   require('lxp').new({
     StartElement = parsetag
   }):parse(data)
   
   
 else
   alert('Fetch failed: ' .. tostring(err))
 end
end

function minmax_temp_tomorrow()
 local ld_minTemp
 local ld_maxTemp
 local next_day={}

 yrno_fetch()
 if (not forecast) then
   return
 end
 local ll_tomorrow=os.time()+24*3600 -- tomorrow as long
 local lt_tomorrow= os.date("*t",ll_tomorrow) -- tomorrow as table for use if forecast_write

 --gets date of tomorrow
 local ls_match=os.date("%Y--%m--%d",ll_tomorrow)

 
for index, value in ipairs(forecast) do
   if (value.from:match("^"..ls_match)) then
     local ld_temp=tonumber(value.temperature)
     if (ld_minTemp == nil) then
       ld_minTemp=ld_temp
     end
     if (ld_maxTemp == nil) then
       ld_maxTemp=ld_temp
     end
     if (ld_temp<ld_minTemp or index==1) then
       ld_minTemp=ld_temp
     end
     if (ld_temp>ld_maxTemp or index==1) then
       ld_maxTemp=ld_temp
     end
   end
end
  return ld_minTemp,ld_maxTemp,lt_tomorrow
end

(08.01.2019, 14:46)admin Wrote: As for Yahoo, we are still waiting for them to accept our access request since their API changed again.

(30.03.2016, 10:45)admin Wrote: Another option is to use forecast from http://yr.no
You have to replace URL with the one that corresponds to your location.

Code:

require('socket.http')

forecast = {}

function parsetag(parser, tag, attributes)
 if tag == 'time' then
   table.insert(forecast, {})
 elseif tag == 'symbol' then
   forecast[ #forecast ].symbol = attributes.name
 elseif tag == 'precipitation' then
   forecast[ #forecast ].precipitation = attributes.value
 elseif tag == 'windDirection' then
   forecast[ #forecast ].wind_direction = attributes.code
 elseif tag == 'windSpeed' then
   forecast[ #forecast ].wind_speed = attributes.mps
 elseif tag == 'temperature' then
   forecast[ #forecast ].temperature = attributes.value
 elseif tag == 'pressure' then
   forecast[ #forecast ].pressure = attributes.value
 end
end

url = 'http://www.yr.no/place/United_Kingdom/England/London/varsel.xml'
data, err = socket.http.request(url)

if data then
 require('lxp').new({
   StartElement = parsetag
 }):parse(data)

 log(forecast)
else
 alert('Fetch failed: ' .. tostring(err))
end

(18.01.2019, 07:50)admin Wrote: Since there's no response from Yahoo we suggest using https://apixu.com instead. You will have to create a free account and make sure that your script does not fetch data too quickly (not less than once in 5 minutes).

Here's a short example, change key variable to your API key, location variable to required location in textual form. This example fetches current weather condition and forecast for today and tomorrow. Fields can be found in apixu documentation: https://www.apixu.com/doc/forecast.aspx (day Element).

Code:

require('json')
https = require('ssl.https')
escape = require('socket.url').escape

key = 'my_api_key'
location = 'my location name'

url = 'https://api.apixu.com/v1/forecast.json?key=%s&q=%s&days=2'
url = string.format(url, key, escape(location))

res = https.request(url)

data = json.pdecode(res)
if type(data) ~= 'table' then
 alert('failed to load weather data')
 return
end

if data.error then
 log('error', data.error)
 return
end

current = data.current
today = data.forecast.forecastday[ 1 ].day
tomorrow = data.forecast.forecastday[ 2 ].day

-- log(current, today, tomorrow)

-- temperature in C
grp.write('32/1/1', current.temp_c)
-- "feels like" temperature in C
grp.write('32/1/2', current.feelslike_c)
-- humidity as percentage
grp.write('32/1/3', current.humidity)
-- wind speed in kilometers per hour
grp.write('32/1/4', current.wind_kph)
-- uv index
grp.write('32/1/5', current.uv)
-- weather condition text
grp.write('32/1/6', current.condition.text)
-- pressure in millibars
grp.write('32/1/7', current.pressure_mb)
-- precipitation amount in millimeters
grp.write('32/1/8', current.precip_mm)

-- minimum temperature in celsius for the day
grp.write('32/2/1', today.mintemp_c)
-- maximum temperature in celsius for the day
grp.write('32/2/2', today.maxtemp_c)
-- average temperature in celsius for the day
grp.write('32/2/3', today.avgtemp_c)
-- average humidity as percentage
grp.write('32/2/4', today.avghumidity)
-- maximum wind speed in kilometers per hour
grp.write('32/2/5', today.maxwind_kph)
-- uv index
grp.write('32/2/6', today.uv)
-- weather condition text
grp.write('32/2/7', today.condition.text)
-- total precipitation in millimeters
grp.write('32/2/8', today.totalprecip_mm)

-- minimum temperature in celsius for the day
grp.write('32/3/1', tomorrow.mintemp_c)
-- maximum temperature in celsius for the day
grp.write('32/3/2', tomorrow.maxtemp_c)
-- average temperature in celsius for the day
grp.write('32/3/3', tomorrow.avgtemp_c)
-- average humidity as percentage
grp.write('32/3/4', tomorrow.avghumidity)
-- maximum wind speed in kilometers per hour
grp.write('32/3/5', tomorrow.maxwind_kph)
-- uv index
grp.write('32/3/6', tomorrow.uv)
-- weather condition text
grp.write('32/3/7', tomorrow.condition.text)
-- total precipitation in millimeters
grp.write('32/3/8', tomorrow.totalprecip_mm)

(18.01.2019, 16:31)admin Wrote: Try this:

Code:

location = 'patra, greece'

For widget you will need to create a separate html page, upload it via ftp and then display by using iframe element.