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From Windy to Domoticz
Posted: Tuesday 09 March 2021 10:35
by javalin
Good Morning,
I am trying to create code to get data from 2 Windy wind stations to send it to 2 domoticz dummy wind devices in the same script. If I create 1 script independently for each WS there is no problem, it works. But with a single script I am not managing to update the last dummy wind device.
This is my code:
Code: Select all
local scriptVar = 'WindyStation'
return
{
on =
{
timer =
{
'every 1 minutes',
},
httpResponses =
{
scriptVar,
},
},
logging =
{
level = domoticz.LOG_DEBUG,
marker = 'WindyStation',
},
execute = function(dz, item)
local dznumber = 0
local urlData = 0
local count = 0
local controls = -- control table
{
{
Rota = true, -- conditions
post ='https://node.windy.com/obs/measurement/v2/ad-LERT/7/1?',
device = 644
},
{
Faro = true,
post = 'https://node.windy.com/obs/measurement/v2/ad-LPFR/7/1?',
device = 645
},
}
local function post(getData)
dz.openURL(
{
url = urlData,
method = 'GET',
callback = scriptVar, -- httpResponses above.
})
return
end
local function walkConditions(type)
for key, value in ipairs(controls) do
if value[type] then
urlData= value.post
post(getData)
end
end
end
if item.isTimer then
walkConditions('Rota')
walkConditions('Faro')
elseif item.json then
for key, value in ipairs(controls) do
dznumber = value.device
local rt = item.json.data.temp
for _, rec in ipairs(rt) do
count = count + 1
end
dz.log("number of records: "..count , dz.LOG_DEBUG )
local temperature = item.json.data.temp[count] - 273.15
local windspeed = item.json.data.wind[count]
local winddir = item.json.data.windDir[count]
--local windgust = item.json.data.gust[count]
local wind_directionString = 0
local c = 11.25
if winddir <= 0 + c then
wind_directionString = "N"
elseif winddir <= 22.5 + c then
wind_directionString = "NNE"
elseif winddir <= 45 + c then
wind_directionString = "NE"
elseif winddir <= 67.5 + c then
wind_directionString = "ENE"
elseif winddir <= 90 + c then
wind_directionString = "E"
elseif winddir <= 112.5 + c then
wind_directionString = "ESE"
elseif winddir <= 135 + c then
wind_directionString = "SE"
elseif winddir <= 157.5 + c then
wind_directionString = "SSE"
elseif winddir <= 180 + c then
wind_directionString = "S"
elseif winddir <= 202.5 + c then
wind_directionString = "SSW"
elseif winddir <= 225 + c then
wind_directionString = "SW"
elseif winddir <= 247.5 + c then
wind_directionString = "WSW"
elseif winddir <= 270 + c then
wind_directionString = "W"
elseif winddir <= 292.5 + c then
wind_directionString = "WNW"
elseif winddir <= 315 + c then
wind_directionString = "NW"
else
wind_directionString = "NNW"
end
local wind = dz.devices(dznumber)
wind.updateWind(winddir, wind_directionString,windspeed,0,temperature,0)
dz.log("temperature: "..temperature .."ºC" , dz.LOG_DEBUG )
dz.log("wind: "..windspeed * 1.94 .."knots" , dz.LOG_DEBUG)
dz.log("winddir: "..winddir .."º" , dz.LOG_DEBUG)
end
end
end
}
This is the log:
Code: Select all
2021-03-09 09:29:00.270 Status: dzVents: Info: WindyStation: ------ Start internal script: windy_stations2:, trigger: "every 1 minutes"
2021-03-09 09:29:00.270 Status: dzVents: Debug: WindyStation: OpenURL: url = https://node.windy.com/obs/measurement/v2/ad-LERT/7/1?
2021-03-09 09:29:00.270 Status: dzVents: Debug: WindyStation: OpenURL: method = GET
2021-03-09 09:29:00.270 Status: dzVents: Debug: WindyStation: OpenURL: post data = nil
2021-03-09 09:29:00.271 Status: dzVents: Debug: WindyStation: OpenURL: headers = nil
2021-03-09 09:29:00.271 Status: dzVents: Debug: WindyStation: OpenURL: callback = WindyStation
2021-03-09 09:29:00.271 Status: dzVents: Debug: WindyStation: OpenURL: url = https://node.windy.com/obs/measurement/v2/ad-LPFR/7/1?
2021-03-09 09:29:00.271 Status: dzVents: Debug: WindyStation: OpenURL: method = GET
2021-03-09 09:29:00.271 Status: dzVents: Debug: WindyStation: OpenURL: post data = nil
2021-03-09 09:29:00.271 Status: dzVents: Debug: WindyStation: OpenURL: headers = nil
2021-03-09 09:29:00.271 Status: dzVents: Debug: WindyStation: OpenURL: callback = WindyStation
2021-03-09 09:29:00.271 Status: dzVents: Info: WindyStation: ------ Finished windy_stations2
2021-03-09 09:29:01.203 Status: dzVents: Info: WindyStation: ------ Start internal script: windy_stations2: HTTPResponse: "WindyStation"
2021-03-09 09:29:01.264 Status: dzVents: Debug: WindyStation: number of records: 351
2021-03-09 09:29:01.279 Status: dzVents: Debug: WindyStation: Processing device-adapter for Rota LERT: Wind device adapter
2021-03-09 09:29:01.280 Status: dzVents: Debug: WindyStation: temperature: 11.0ºC
2021-03-09 09:29:01.280 Status: dzVents: Debug: WindyStation: wind: 3.88knots
2021-03-09 09:29:01.280 Status: dzVents: Debug: WindyStation: winddir: 60º
2021-03-09 09:29:01.280 Status: dzVents: Debug: WindyStation: number of records: 702
2021-03-09 09:29:01.280 Status: dzVents: Info: WindyStation: ------ Finished windy_stations2
2021-03-09 09:29:01.526 Status: dzVents: Info: WindyStation: ------ Start internal script: windy_stations2: HTTPResponse: "WindyStation"
2021-03-09 09:29:01.581 Status: dzVents: Debug: WindyStation: number of records: 347
2021-03-09 09:29:01.582 Status: dzVents: Info: WindyStation: ------ Finished windy_stations2
2021-03-09 09:29:01.280 Error: dzVents: Error: (3.1.1) WindyStation: An error occurred when calling event handler windy_stations2
2021-03-09 09:29:01.280 Error: dzVents: Error: (3.1.1) WindyStation: ...cz/scripts/dzVents/generated_scripts/windy_stations2.lua:74: attempt to perform arithmetic on a nil value (field '?')
2021-03-09 09:29:01.582 Error: dzVents: Error: (3.1.1) WindyStation: An error occurred when calling event handler windy_stations2
2021-03-09 09:29:01.582 Error: dzVents: Error: (3.1.1) WindyStation: ...cz/scripts/dzVents/generated_scripts/windy_stations2.lua:80: attempt to compare nil with number
At the moment the script send data to the first dummy wind device (idx=644). Problem is how send data to the second dummy wind device.
Re: From Windy to Domoticz
Posted: Tuesday 09 March 2021 15:34
by waaren
javalin wrote: ↑Tuesday 09 March 2021 10:35
I am trying to create code to get data from 2 Windy wind stations to send it to 2 domoticz dummy wind devices in the same script. If I create 1 script independently for each WS there is no problem, it works. But with a single script I am not managing to update the last dummy wind device.
Can you try this one?
Code: Select all
local scriptVar = 'WindyStation'
return
{
on =
{
timer =
{
'every 1 minutes',
},
httpResponses =
{
scriptVar .. '*',
},
},
logging =
{
level = domoticz.LOG_DEBUG,
marker = 'WindyStation',
},
execute = function(dz, item)
local controls = -- control table
{
{
Rota = true, -- conditions
post ='https://node.windy.com/obs/measurement/v2/ad-LERT/7/1?',
device = 644,
},
{
Faro = true,
post = 'https://node.windy.com/obs/measurement/v2/ad-LPFR/7/1?',
device = 645,
},
}
local function post(url, id)
dz.openURL(
{
url = url,
callback = scriptVar .. '_' .. id, -- httpResponses above.
})
end
local function walkConditions(type)
for key, value in ipairs(controls) do
if value[type] then
post(value.post, value.device)
end
end
end
local function windDirection( nDir )
windDirections = { 'N', 'NNE','NE','ENE','E','ESE','SE','SSE','S','SSW','SW','WSW','W','WNW','NW','NNW' , 'N'}
return ( windDirections[ math.floor( ( nDir + 11.25 ) / 22.50 ) + 1 ] )
end
if item.isTimer then
walkConditions('Rota')
walkConditions('Faro')
elseif item.json then
local idxStr = item.trigger:gsub(scriptVar ..'_', '')
local idx = tonumber(idxStr)
dz.log('Values for device ' .. idx ,dz.LOG_DEBUG )
local temperature = item.json.data.temp[#item.json.data.temp] - 273.15
local windspeed = item.json.data.wind[#item.json.data.wind]
local winddir = item.json.data.windDir[#item.json.data.windDir]
-- local windgust = item.json.data.gust[#item.json.data.gust]
dz.devices(idx).updateWind(winddir, windDirection(winddir),windspeed,0,temperature,0)
dz.log('temperature: '..temperature ..' ºC' , dz.LOG_DEBUG )
dz.log('wind: '..windspeed * 1.94 ..' knots' , dz.LOG_DEBUG)
dz.log('winddir: '..winddir ..' º' , dz.LOG_DEBUG)
dz.log('winddir: '.. windDirection(winddir) , dz.LOG_DEBUG)
else
dz.log('problem with return', dz.LOG_ERROR)
dz.log(item, dz.LOG_DEBUG)
end
end
}
Re: From Windy to Domoticz
Posted: Tuesday 09 March 2021 22:14
by javalin
Can you try this one?
Thank you waaren, it works.
Code: Select all
local function windDirection( nDir )
windDirections = { 'N', 'NNE','NE','ENE','E','ESE','SE','SSE','S','SSW','SW','WSW','W','WNW','NW','NNW' , 'N'}
return ( windDirections[ math.floor( ( nDir + 11.25 ) / 22.50 ) + 1 ] )
end
The beatiful way to get the cardinal point, I would never have thought of dividing the compass rose into 16 parts to extract the cardinal point. Simply brilliant
Code: Select all
local idxStr = item.trigger:gsub(scriptVar ..'_', '')
So idx device is part of the Callback and this is the solution to store the 'idx device' when script is executed by the httpResponse?
Code: Select all
local winddir = item.json.data.windDir[#item.json.data.windDir]
For some strange reason and only in one of the wind stations #item.json.data.windDir does not get the total number of recordings, I have taken a look to the json windDir table and it has several null records, this may be the reason. Temperature, wind and windDir json tables have the same number of records so I have changed the line to:
Code: Select all
local winddir = item.json.data.windDir[#item.json.data.temp]
and fixed the issue.
Re: From Windy to Domoticz
Posted: Wednesday 10 March 2021 15:59
by AllesVanZelf
Hello Javalin,
This is wonderfull! Did you create a virtual text sensor for this? The idx'es?
Where did you find the hyperlink to this locations?
Edit: Yes already found it. I choose dummy type wind+temp+'gevoel'. And on the website choose a location and nearest weatherstations.
Thank you!
Re: From Windy to Domoticz
Posted: Wednesday 10 March 2021 17:24
by waaren
javalin wrote: ↑Tuesday 09 March 2021 22:14
Code: Select all
local idxStr = item.trigger:gsub(scriptVar ..'_', '')
So idx device is part of the Callback and this is the solution to store the 'idx device' when script is executed by the httpResponse?
Yes. Attached to callback when send and extracted when callback returns
Code: Select all
local winddir = item.json.data.windDir[#item.json.data.windDir]
For some strange reason and only in one of the wind stations #item.json.data.windDir does not get the total number of recordings, I have taken a look to the json windDir table and it has several null records, this may be the reason. Temperature, wind and windDir json tables have the same number of records so I have changed the line to:
Code: Select all
local winddir = item.json.data.windDir[#item.json.data.temp]
and fixed the issue.
Is indeed caused by the null values which are translated by the JSON handler to nil, and thus making gaps in the array.
See below for a solution using the lodash library for Lua. This will do the job in a more robust way using the _.findlast method.
Code: Select all
local scriptVar = 'WindyStation'
return
{
on =
{
timer =
{
'every 1 minutes',
},
httpResponses =
{
scriptVar .. '*',
},
},
logging =
{
level = domoticz.LOG_DEBUG,
marker = 'WindyStation',
},
execute = function(dz, item)
local _ = dz.utils._ -- lodash library for Lua
local controls = -- control table
{
{
Rota = true, -- conditions
post ='https://node.windy.com/obs/measurement/v2/ad-LERT/7/1?',
device = 644,
},
{
Faro = true,
post = 'https://node.windy.com/obs/measurement/v2/ad-LPFR/7/1?',
device = 645,
},
}
local function post(url, id)
dz.openURL(
{
url = url,
callback = scriptVar .. '_' .. id, -- attach _id to the callback string
})
end
local function walkConditions(type)
for key, value in ipairs(controls) do
if value[type] then
post(value.post, value.device)
end
end
end
local function windDirection( nDir )
windDirections = { 'N', 'NNE','NE','ENE','E','ESE','SE','SSE','S','SSW','SW','WSW','W','WNW','NW','NNW' , 'N'}
return ( windDirections[ math.floor( ( nDir + 11.25 ) / 22.50 ) + 1 ] )
end
if item.isTimer then
walkConditions('Rota')
walkConditions('Faro')
elseif item.json then
local idxStr = item.trigger:gsub(scriptVar ..'_', '') -- extract idz from callback string
local idx = tonumber(idxStr) -- must be numeric
dz.log('Values for device ' .. idx ,dz.LOG_DEBUG )
local temperature = _.findLast(item.json.data.temp) - 273.15 -- _.findLast function does return the last element of the array. See
local windspeed = _.findLast(item.json.data.wind) -- https://htmlpreview.github.io/?https://github.com/rwaaren/lodash.lua/blob/master/doc/index.html#_.findLast
local winddir = _.findLast(item.json.data.windDir)
dz.devices(idx).updateWind(winddir, windDirection(winddir),windspeed,0,temperature,0)
dz.log('temperature: '..temperature ..' ºC' , dz.LOG_DEBUG )
dz.log('wind: '..windspeed * 1.94 ..' knots' , dz.LOG_DEBUG)
dz.log('winddir: '..winddir ..' º' , dz.LOG_DEBUG)
dz.log('winddir: '..windDirection(winddir) , dz.LOG_DEBUG)
else
dz.log('problem with return', dz.LOG_ERROR)
dz.log(item, dz.LOG_DEBUG)
end
end
}
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 9:01
by javalin
This will do the job in a more robust way using the _.findlast method.
Thank you waaren, now it works even better. With the use of #tablename dummy wind device did not update when the wind speed or wind direction value was null. Now, with _.findlast method the wind device can update also to zero values.
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 10:54
by AllesVanZelf
@Waaren and @javalin,
Is it possible to implement windgust?
It was mentioned in the first version and commented out.
And 'Wind chill' (/ gevoelstemperatuur)
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 11:12
by waaren
AllesVanZelf wrote: ↑Thursday 11 March 2021 10:54
Is it possible to implement windgust and 'Wind chill'
I guess so.
Can you give me the url where the windgust is part of the return so I can test? The Wind Chill is something I can calculate based on temperature and windspeed.
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 11:16
by AllesVanZelf
If I see this page:
link to station schiphol, I find:
Thank you, that would be great.
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 12:50
by waaren
Can you try this one?
Code: Select all
local scriptVar = 'WindyStation'
return
{
on =
{
timer =
{
'every 5 minutes',
},
httpResponses =
{
scriptVar .. '*',
},
},
logging =
{
level = domoticz.LOG_DEBUG,
marker = 'WindyStation',
},
execute = function(dz, item)
local _ = dz.utils._ -- lodash library for Lua
local controls = -- control table
{
Rota =
{
active = true,
code = 'ad-LERT',
device = 644,
},
Faro =
{
active = false,
code = 'ad-LPFR',
device = 645,
},
Schiphol =
{
active = true,
code = 'ad-EHAM',
device = 857,
},
}
local function postURL(code, idx, name)
dz.openURL(
{
url = 'https://node.windy.com/obs/measurement/v2/' .. code .. '/7/1?',
callback = scriptVar .. '_' .. name .. '_' .. idx,
})
end
local function getData()
for name, airport in pairs(controls) do
if airport.active then
postURL(airport.code, airport.device, name)
end
end
end
local function windDirection( nDir )
windDirections = { 'N', 'NNE','NE','ENE','E','ESE','SE','SSE','S','SSW','SW','WSW','W','WNW','NW','NNW' , 'N'}
return ( windDirections[ math.floor( ( nDir + 11.25 ) / 22.50 ) + 1 ] )
end
local function cWindChill(windSpeed, temperature)
if temperature == nil then return 0 -- Should not happen
elseif windSpeed == nil then return 0 -- Should not happen
-- chill temperature cannot be calculated for these conditions
elseif windSpeed < 1.3 or windSpeed > 49 or temperature < -46 or temperature > 17 then return temperature end
return dz.utils.round(13.12 + (0.6215 * temperature) - (13.96 * windSpeed^0.16) + (0.4867 * temperature * windSpeed^0.16), 1)
end
if item.isTimer then
getData()
elseif item.json then
local airport = item.trigger:match('%_(.-)%_') -- extract name from callback string
local idxStr = item.trigger:match('%d*$') -- extract idx from callback string
local idx = tonumber(idxStr) -- must be numeric
dz.log('Values from '.. airport .. ' for device ' .. idx ,dz.LOG_DEBUG )
local temperature = _.findLast(item.json.data.temp) -- _.findLast function does return the last element of the array. See
local windspeed = _.findLast(item.json.data.wind) -- https://htmlpreview.github.io/?https://github.com/rwaaren/lodash.lua/blob/master/doc/index.html#_.findLast
local winddir = _.findLast(item.json.data.windDir)
local windgust = _.findLast(item.json.data.gust) or 0
if temperature == nil or windspeed == nil or winddir == nil then
dz.log('Problem in the data. Skipping this reading', dz.LOG_DEBUG )
dz.log('temperature: ' .. tostring(temperature), dz.LOG_DEBUG )
dz.log('windspeed: ' .. tostring(windspeed), dz.LOG_DEBUG )
dz.log('winddir: ' .. tostring(winddir), dz.LOG_DEBUG )
return
end
temperature = temperature - 273.15
local windchill = cWindChill(windspeed, temperature)
dz.devices(idx).updateWind(winddir, windDirection(winddir),windspeed,windgust,temperature,windchill)
dz.log('temperature: ' .. temperature ..' ºC' , dz.LOG_DEBUG )
dz.log('wind: ' .. windspeed * 1.94 ..' knots' , dz.LOG_DEBUG)
dz.log('winddir: ' .. winddir ..'º' , dz.LOG_DEBUG)
dz.log('winddir: ' .. windDirection(winddir) , dz.LOG_DEBUG)
dz.log('windgust: ' .. dz.utils.round(( windgust or 0) * 1.94,2) ..' knots' , dz.LOG_DEBUG)
dz.log('windchill: ' .. windchill .. ' ºC' , dz.LOG_DEBUG)
else
dz.log('problem with return', dz.LOG_ERROR)
dz.log(item, dz.LOG_DEBUG)
end
end
}
}
Re: From Windy to Domoticz [Solved]
Posted: Thursday 11 March 2021 13:02
by AllesVanZelf
Thanks again Waaren. This is working well!!!
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 13:28
by AllesVanZelf
Hmm. It was working for a while, but now Temp is zero.
I have this error in the Log:
Code: Select all
Error: dzVents: Error: (3.1.5) WindyStation: ...scripts/dzVents/generated_scripts/Windy all Schiphol.lua:77: attempt to perform arithmetic on a nil value
Temperature is not updated and this gives an error in calculation?
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 13:37
by waaren
AllesVanZelf wrote: ↑Thursday 11 March 2021 13:28
Hmm. It was working for a while, but now Temp is zero.
I have this error in the Log:
Code: Select all
Error: dzVents: Error: (3.1.5) WindyStation: ...scripts/dzVents/generated_scripts/Windy all Schiphol.lua:77: attempt to perform arithmetic on a nil value
Probably a data problem. Will build some extra protection around it.
The error you posted mention line 77 but in the script I posted, line 77 only contains
So I assume you added or removed some lines. If you do that and post an error with a line number, please also post the complete modified script. That will help in identifying the issue
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 13:43
by AllesVanZelf
Sorry about that. The script is:
Code: Select all
local scriptVar = 'WindyStation'
return
{
on =
{
timer =
{
'every 1 minutes',
},
httpResponses =
{
scriptVar .. '*',
},
},
logging =
{
level = domoticz.LOG_DEBUG,
marker = 'WindyStation',
},
execute = function(dz, item)
local _ = dz.utils._ -- lodash library for Lua
local controls = -- control table
{
Schiphol =
{
active = true,
code = 'ad-EHAM',
device = 2367,
},
Rota =
{
active = true,
code = 'ad-LERT',
device = 2368,
},
}
local function postURL(code, idx, name)
dz.openURL(
{
url = 'https://node.windy.com/obs/measurement/v2/' .. code .. '/7/1?',
callback = scriptVar .. '_' .. name .. '_' .. idx,
})
end
local function getData()
for name, airport in pairs(controls) do
if airport.active then
postURL(airport.code, airport.device, name)
end
end
end
local function windDirection( nDir )
windDirections = { 'N', 'NNE','NE','ENE','E','ESE','SE','SSE','S','SSW','SW','WSW','W','WNW','NW','NNW' , 'N'}
return ( windDirections[ math.floor( ( nDir + 11.25 ) / 22.50 ) + 1 ] )
end
local function cWindChill(windSpeed, temperature)
if temperature == nil then return 0 -- Should not happen
elseif windSpeed == nil then return 0 -- Should not happen
-- chill temperature cannot be calculated for these conditions
elseif windSpeed < 1.3 or windSpeed > 49 or temperature < -46 or temperature > 17 then return temperature end
return dz.utils.round(13.12 + (0.6215 * temperature) - (13.96 * windSpeed^0.16) + (0.4867 * temperature * windSpeed^0.16), 1)
end
if item.isTimer then
getData()
elseif item.json then
local airport = item.trigger:match('%_(.-)%_') -- extract name from callback string
local idxStr = item.trigger:match('%d*$') -- extract idx from callback string
local idx = tonumber(idxStr) -- must be numeric
dz.log('Values from '.. airport .. ' for device ' .. idx ,dz.LOG_DEBUG )
local temperature = _.findLast(item.json.data.temp) - 273.15 -- _.findLast function does return the last element of the array. See
local windspeed = _.findLast(item.json.data.wind) -- https://htmlpreview.github.io/?https://github.com/rwaaren/lodash.lua/blob/master/doc/index.html#_.findLast
local winddir = _.findLast(item.json.data.windDir)
local windgust = _.findLast(item.json.data.gust) or 0
local windchill = cWindChill(windspeed, temperature)
dz.devices(idx).updateWind(winddir, windDirection(winddir),windspeed,windgust,temperature,windchill)
dz.log('temperature: ' .. temperature ..' ºC' , dz.LOG_DEBUG )
dz.log('wind: ' .. windspeed * 1.94 ..' knots' , dz.LOG_DEBUG)
dz.log('winddir: ' .. winddir ..'º' , dz.LOG_DEBUG)
dz.log('winddir: ' .. windDirection(winddir) , dz.LOG_DEBUG)
dz.log('windgust: ' .. dz.utils.round(( windgust or 0) * 1.94,2) ..' knots' , dz.LOG_DEBUG)
dz.log('windchill: ' .. windchill .. ' ºC' , dz.LOG_DEBUG)
else
dz.log('problem with return', dz.LOG_ERROR)
dz.log(item, dz.LOG_DEBUG)
end
end
}
and error log line:
Code: Select all
Error: dzVents: Error: (3.1.5) WindyStation: ...scripts/dzVents/generated_scripts/Windy all Schiphol.lua:83: attempt to perform arithmetic on a nil value
Line 83 is:
Code: Select all
local temperature = _.findLast(item.json.data.temp) - 273.15
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 13:49
by waaren
AllesVanZelf wrote: ↑Thursday 11 March 2021 13:43
and error log line:
Code: Select all
Error: dzVents: Error: (3.1.5) WindyStation: ...scripts/dzVents/generated_scripts/Windy all Schiphol.lua:83: attempt to perform arithmetic on a nil value
Line 83 is:
Code: Select all
local temperature = _.findLast(item.json.data.temp) - 273.15
OK. I updated the version (with some protection) in my earlier post.
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 14:30
by javalin
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@Waaren and @javalin,
Is it possible to implement windgust?
I had disable Wind Gust line because, before upgrade script with _.findlast method, the script 'froze' when got a nil value. Faro and Rota has not Wind Gust values but others stations may.
I have discovered that original source that Windy shows came from METAR.
https://www.aviationweather.gov/metar
So, other way to get json info is in link bellow:
https://www.aviationweather.gov/cgi-bin ... 6639315631
Wind info is in rawOb line: "GMME 111330Z 35008KT 310V010 8000 NSC 19/13 Q1025 NOSIG"
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 14:42
by waaren
javalin wrote: ↑Thursday 11 March 2021 14:30
I had disable Wind Gust line because, before upgrade script with _.findlast method, the script 'froze' when got a nil value. Faro and Rota has not Wind Gust values but others stations may.
I understand and that's why I added the "or 0" to windgust. So if _.findLast returns nil, the script will not crash but will replace nil with 0. This will give the same result as the hardcoded 0 in the updateWind statement you used.
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 14:59
by AllesVanZelf
Thank you Waaren for all the effort you put into this!
Re: From Windy to Domoticz
Posted: Thursday 11 March 2021 19:20
by javalin
I understand and that's why I added the "or 0" to windgust. So if _.findLast returns nil, the script will not crash but will replace nil with 0. This will give the same result as the hardcoded 0 in the updateWind statement you used.
Understood, thank you very much for the help waaren.
Today was the first day that I truly understood this message:
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attempt to perform arithmetic on a nil value
Sometimes, I don't understand what I read, no matter how much I repeat...