ScatterPlot worked in the way I wanted to ... 

elapsed:day
5.3                                         ... 
|                                        ....   
|                                    .....      
|                                 ....          
|                             .....             
|                       .......                 
|                 .......                size:T 
0.0        ........                        20.7 
0.0.........------------------------------------

(This & following 2 lines I have added myself.)
X: amount of data transferred, TB;
Y: number of days elapsed.

Above is not very linear graph of data transferred via zfs send | ssh other-host zfs recv from one FreeBSD 12 host to another. After 5.3 days, 20.7 TB of data (total is 47.9 TB) had been transferred.

As of now, linear regression suggests ~10 more days to finish. Polynomial curve fit (of degree 3) — which had matched the plot more than linear regression — estimates ~30 days. Yikes!

In reply to Re^3: Plaintext plot - existing sofware? by parv
in thread Plaintext plot - existing software? by parv

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