[R] plot shows exponential values incompatible with data

[Fox, John]

Dear Luigi,

> On Jul 9, 2020, at 8:59 AM, Luigi Marongiu <marongiu.luigi using gmail.com> wrote:
> 
> Hello,
> I have these vectors:
> ```
> X <- 1:7
> Y <- c(1438443863, 3910100650, 10628760108, 28891979048, 78536576706,
> 213484643920, 580311678200)
> plot(Y~X)
> ```
> The y-axis starts at 0e0, but the first value is 1.4 billion. Why the
> axis does not start at 1e9?

Because you're plotting on a linear, not log, scale, and 0*10^11 = 0. 

> round(Y/1e11)
[1] 0 0 0 0 1 2 6

Then try plot(log(Y) ~ X).

I hope this helps,
 John

  -----------------------------
  John Fox, Professor Emeritus
  McMaster University
  Hamilton, Ontario, Canada
  Web: http::/socserv.mcmaster.ca/jfox
> 
> 
> 
> -- 
> Best regards,
> Luigi
> 
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