This code sample of a area chart report.

This creates a stacked area chart of all of your assets with a particular property.

Then for each moment in time, it shows the value found in each asset. By stacking your values on top of one-another, you see not only the total amount, but how much each individual item contributed to that total.

import os
import sys
 
sys.path.insert(0,os.path.dirname(os.path.dirname(__file__)))
 
import mplreport
import datetime
 
@mplreport.ardireport("Sample Report")
def CreateReport(report,args):    
 
    #Create a page containing a single plot.
    fig,ax = report.CreatePage(1)
 
    #Print a title block for the page.
    report.Title()                   
 
    #Our AQL query goes here
    query = "('[PROPERTY]') PROPERTY ALLPOINTS"
 
    #Get the pandas data-frame with the results.
    df = report.GetHistory(query)    
 
    #The cumulative totals so far, so we can draw the next area above the previous one.
    sofar = [0] * len(df.index)
 
    #Draw the area chart
    for col in df.columns:
        values = df[col] + sofar        
        ax.fill_between(df.index,sofar,values,label=col.replace(" [PROPERTY]",""))
        sofar = values
 
    #Set the minimum Y value to 0
    ax.set_ylim(0)
 
    #Clean up and prettify    
    ax.margins(x=0)
    ax.set_xlabel("Time")
    ax.set_ylabel("[MEASUREMENT] ([UNIT])")
    ax.legend(loc='lower right')
 
    report.TimeAxis(ax.xaxis)    
    report.Grid(ax)        
 
    #Save this report out.
    report.Save()