Graph Axibase时间序列数据库-过滤掉时间图表上的负值
我正在使用社区版10552来存储我的光伏和太阳高度数据。太阳高度值在夜间为负值,我不想在图表上看到它们 如何仅查看正值?有人知道可以实现这一点的设置或技巧吗 以下是我当前的配置:Graph Axibase时间序列数据库-过滤掉时间图表上的负值,graph,charts,time-series,axibase,Graph,Charts,Time Series,Axibase,我正在使用社区版10552来存储我的光伏和太阳高度数据。太阳高度值在夜间为负值,我不想在图表上看到它们 如何仅查看正值?有人知道可以实现这一点的设置或技巧吗 以下是我当前的配置: [widget] type = chart title = PV power timespan = 3 day entity = pvout.25630 [series] label = Sun Altitude at (-35.3089, 149.2004) metric = sun_alt
[widget]
type = chart
title = PV power
timespan = 3 day
entity = pvout.25630
[series]
label = Sun Altitude at (-35.3089, 149.2004)
metric = sun_altitude
color = orange
[tags]
lat = -35.3089
lon = 149.2004
下面是我目前实际看到的屏幕截图:
以下是图表实验室中的一个示例:
好问题
有几种方法可以隐藏或过滤掉负值:
[widget]
type = chart
title = PV power
timespan = 3 day
entity = pvout.25630
[series]
metric = sun_altitude
display = false
alias = sun_alt
[tags]
lat=-35.3089
lon=149.2004
[series]
label = Sun Altitude at (-35.3089, 149.2004)
value = Math.max(0, value('sun_alt'))
color = orange
[widget]
type = chart
title = PV power
timespan = 3 day
entity = pvout.25630
[series]
label = Sun Altitude at (-35.3089, 149.2004)
metric = sun_altitude
color = orange
replace-value = value < 0 ? null : value
[tags]
lat=-35.3089
lon=149.2004
Math.max
函数:
[widget]
type = chart
title = PV power
timespan = 3 day
[series]
label = Altitude
#API: SunCalc.getPosition = function (date, lat, lng)
value = var pos = SunCalc.getPosition(new Date(time), -35.3089, 149.2004);
value = return Math.max(0, pos.altitude)
frequency = 30 minute
color = orange
[widget]
type = chart
title = PV power
timespan = 3 day
entity = pvout.25630
[series]
metric = sun_altitude
display = false
alias = sun_alt
[tags]
lat=-35.3089
lon=149.2004
[series]
label = Sun Altitude at (-35.3089, 149.2004)
value = Math.max(0, value('sun_alt'))
color = orange
value=Math.max(0,value('sun_alt'))
方程创建一个没有负值的新计算序列
结果: