node-red-contrib-dashboard-sum-bars

Calculate and display the sum values of msg.payload in a bar chart.

Pre-requisites :

node-red-contrib-dashboard-sum-bars requires node-red-dashboard. The sum-bars node is necessarily linked to the node-red dashboard template node. The sum-bars node create the input msg of the template node and the template node display the chart.

Node properties :

X-axis :

• last hour : 1 bar per minute
• last day : 1 bar per hour
• last week : 1 bar per day
• last month : 1 bar per day
• last year : 1 bar per month
• msg.topic : 1 bar for each msg.topic

Y-axis :

• "auto" : y-axis is calculated according to the msg.payload received.

Bar style :

• rectangle : classical bar
• equalizer : equalizer bar style

Bar colors : choice the color gradient of the bars

Display values : check boxes to display or hide values :

• bar values : value above the bar
• x-axis values : period values (or msg.topic if x-axis = msg.topic )
• chart sum : the sum of all values received

Unit : unit to display behind values

Decimals : number of decimals to display

Font color : color of the scale and the values

Note :

• sum-bars node values can be cleared by sending the string "clear" in the msg.payload.
• Node-red reboot : keep the node values by storing the context values ( see contextStorage attribute in settings.js )