rscalc error

[s0161038]

Dear all,

I just reflashed my SD card after becoming read-only (LM4). After the recovery, I updated to firmware 20200720.

After restoring my backup I noticed the common rscalc function I use to check if the sun is up is not working any more on my system. 

Code:

function sun_is_up()   -- returns number of minutes from 0:00 until sunrise and sunset   latitude = 57   longitude = 24.15   log('gerund')   sunrise, sunset = rscalc(latitude, longitude)     date = os.date('*t')     now = date.hour * 60 + date.min     -- from 0:00 to sunrise         if now < sunrise then           alert('before sunrise')     return false     -- from sunset to 23:59         elseif now > sunset then           alert('after sunset')     return false         else           alert('day')     return true         end end

I always get the following error:


Common functions:7: attempt to call global 'rscalc' (a nil value)
stack traceback:

Does anybody have an idea what this is causing? 
Or does anybody know where the sourcecode of rscalc can be found to check what is going wrong?

thanks

[buuuudzik]

You don't have in "Common functions" rscalc function. I've copied it from my LM (I don't know why, maybe it is not included in backup):

Code:

-- sunrise / sunset calculation function rscalc(latitude, longitude, when)   local pi = math.pi   local doublepi = pi * 2   local rads = pi / 180.0   local TZ = function(when)     local ts = os.time(when)     local utcdate, localdate = os.date('!*t', ts), os.date('*t', ts)     localdate.isdst = false     local diff = os.time(localdate) - os.time(utcdate)     return math.floor(diff / 60) / 60   end   local range = function(x)     local a = x / doublepi     local b = doublepi * (a - math.floor(a))     return b < 0 and (doublepi + b) or b   end   when = when or os.date('*t')   local y2k = { year = 2000, month = 1, day = 1 }   local y2kdays = os.time(when) - os.time(y2k)   y2kdays = math.ceil(y2kdays / 86400)   local meanlongitude = range(280.461 * rads + 0.9856474 * rads * y2kdays)   local meananomaly = range(357.528 * rads + 0.9856003 * rads * y2kdays)   local lambda = range(meanlongitude + 1.915 * rads * math.sin(meananomaly) + rads / 50 * math.sin(2 * meananomaly))   local obliq = 23.439 * rads - y2kdays * rads / 2500000   local alpha = math.atan2(math.cos(obliq) * math.sin(lambda), math.cos(lambda))   local declination = math.asin(math.sin(obliq) * math.sin(lambda))   local LL = meanlongitude - alpha   if meanlongitude < pi then     LL = LL + doublepi   end   local dfo = pi / 216.45   if latitude < 0 then     dfo = -dfo   end   local fo = math.min(math.tan(declination + dfo) * math.tan(latitude * rads), 1)   local ha = 12 * math.asin(fo) / pi + 6   local timezone = TZ(when)   local equation = 12 + timezone + 24 * (1 - LL / doublepi) - longitude / 15   local sunrise, sunset = equation - ha, equation + ha   if sunrise > 24 then     sunrise = sunrise - 24   end   if sunset > 24 then     sunset = sunset - 24   end   return math.floor(sunrise * 60), math.ceil(sunset * 60) end

[s0161038]

You don't have in "Common functions" rscalc function. I've copied it from my LM (I don't know why, maybe it is not included in backup):

Code:

-- sunrise / sunset calculation function rscalc(latitude, longitude, when)   local pi = math.pi   local doublepi = pi * 2   local rads = pi / 180.0   local TZ = function(when)     local ts = os.time(when)     local utcdate, localdate = os.date('!*t', ts), os.date('*t', ts)     localdate.isdst = false     local diff = os.time(localdate) - os.time(utcdate)     return math.floor(diff / 60) / 60   end   local range = function(x)     local a = x / doublepi     local b = doublepi * (a - math.floor(a))     return b < 0 and (doublepi + b) or b   end   when = when or os.date('*t')   local y2k = { year = 2000, month = 1, day = 1 }   local y2kdays = os.time(when) - os.time(y2k)   y2kdays = math.ceil(y2kdays / 86400)   local meanlongitude = range(280.461 * rads + 0.9856474 * rads * y2kdays)   local meananomaly = range(357.528 * rads + 0.9856003 * rads * y2kdays)   local lambda = range(meanlongitude + 1.915 * rads * math.sin(meananomaly) + rads / 50 * math.sin(2 * meananomaly))   local obliq = 23.439 * rads - y2kdays * rads / 2500000   local alpha = math.atan2(math.cos(obliq) * math.sin(lambda), math.cos(lambda))   local declination = math.asin(math.sin(obliq) * math.sin(lambda))   local LL = meanlongitude - alpha   if meanlongitude < pi then     LL = LL + doublepi   end   local dfo = pi / 216.45   if latitude < 0 then     dfo = -dfo   end   local fo = math.min(math.tan(declination + dfo) * math.tan(latitude * rads), 1)   local ha = 12 * math.asin(fo) / pi + 6   local timezone = TZ(when)   local equation = 12 + timezone + 24 * (1 - LL / doublepi) - longitude / 15   local sunrise, sunset = equation - ha, equation + ha   if sunrise > 24 then     sunrise = sunrise - 24   end   if sunset > 24 then     sunset = sunset - 24   end   return math.floor(sunrise * 60), math.ceil(sunset * 60) end

Thanks, just what i was missing.

[buuuudzik]

Perfect

[linux_sun]

Good morning, I have the same problem, but I didn’t understand where the **rscalc** function needs to be copied.

[admin]

Scripting > Common functions