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Charts Definition Language (CDL): Difference between revisions
Charts Definition Language (CDL) (view source)
Revision as of 09:30, 29 December 2022
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== The Chart Axis == | == The Chart Axis == | ||
All PlotVariables have their own defined axis and those axis will be coupled automatically to the chart. Multiple axis will be alternately added left-right where the order in the definition files determines this order. So it is the user who ultimately can define where the axis are placed: left or right and from inside to the outside in the order where they are encountered during the parsing process. | All PlotVariables have their own defined axis and those axis will be coupled automatically to the chart. Multiple axis will be alternately added left-right where the order in the definition files determines this order. So it is the user who ultimately can define where the axis are placed: left or right and from inside to the outside in the order where they are encountered during the parsing process. | ||
The scaling of the axis is flexible i.e. it starts with a reasonable value for the upper and lower bounds and adjusts if the real values are higher or lower. For some axis the lower bound is always 0 (e.g. rain) for another the upper and lower bounds are fixed. Specifics are found below. | |||
The following axis are currently defined and implicit for the plot variables (the user has no options here): | The following axis are currently defined and implicit for the plot variables (the user has no options here): | ||
#None | #None | ||
#Temp | #Temp - automatic scaling for min/max | ||
#Pressure | #Pressure - scaling with a pseudo-fixed scale which means the min/max values of the scale are set to the min/max all time records found in ''alltime.ini''. Highcharts itself sets the scale values such that there is a tick at the end of the scale and the min/max values fall between the ticks at the end of the scale. If the pressure gets a lower/higher value the axis will adjust automatically. The idea is that any barometer you have at home has a fixed scale and with small variations there is little movement of the needle. However when the pressure starts falling/rising significantly it is very obvious. This behaviour is mimicked by CUtils (as far as possible) | ||
#Rain | #Rain - automatic scaling with minimum value of 0 and an initial maximum of 1 (to accommodate measurement in inches) | ||
#Rrate | #Rrate - automatic scaling with minimum value of 0 and an initial maximum of 1 (to accommodate measurement in inches) | ||
#Wind | #Wind - automatic scaling for min/max | ||
#Direction | #Direction - scaling is fixed for 0 to 360 degree. When only direction is plotted two axis are created: in degrees and in wind directions (N, E, S, W). When combined with another unit only the axis with wind directions is used. | ||
#Humidity | #Humidity - scaling is fixed between 0 and 100 | ||
#Solar | #Solar - scaling is fixed between 0 and a rough estimate of the maximum theoretical value for radiation + 150. If the actual value goes beyond that, the scale will adjust. | ||
#UV | #UV - automatic scaling for maximum, minimum is 0 | ||
#Hours | #Hours - automatic scaling for maximum, minimum is 0 | ||
#Distance | #Distance - automatic scaling for maximum, minimum is 0 | ||
#DegreeDays | #DegreeDays - automatic scaling for maximum, minimum is 0 | ||
#EVT | #EVT - automatic scaling for maximum, minimum is 0 | ||
#Free | #Free - has no title, unit or context associated with it. It just displays values. Automatic scaling for min/max. | ||
#AQ | #AQ - automatic scaling for maximum, minimum is 0 | ||
#ppm | #ppm - automatic scaling for maximum which starts at 500, minimum is 0. The default maximum is because the CO<sub>2</sub> value is around 420 (in 2022) outdoors. | ||
Translations for the axis titles come from the [Website] section (until '''''EVT''''') and should require no additional effort. | Translations for the axis titles come from the [Website] section (until '''''EVT''''') and should require no additional effort. | ||