[R] plot shows exponential values incompatible with data

[Rui Barradas]

Hello,

Like this?

plot(Y~X, log="y")



Hope this helps,

Rui Barradas

Às 14:59 de 09/07/20, Luigi Marongiu escreveu:
> Thank you,
> but why it does not work in linear? With the log scale, I know it
> works but I am not looking for it; is there a way to force a linear
> scale?
> Regards
> Luigi
> 
> On Thu, Jul 9, 2020 at 3:44 PM Fox, John <jfox using mcmaster.ca> wrote:
>>
>> 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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>>> and provide commented, minimal, self-contained, reproducible code.
>>
> 
>