R help - Jul 2018 - about ECDF display in ggplot2

Dear all,

I would appreciate having your advice/suggestions/comments on the following
:

1 -- starting from a vector that contains LENGTHS (numerically, the values
are from 1 to 10 000)

2 -- shall I display the ECDF by using the R code and some "limits" :

BREAKS = c(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500,
           1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000)

ggplot(x, aes(LENGTH)) +
          stat_ecdf(geom = "point") +
          scale_x_continuous(name = "LENGTH of DEL",
                             breaks = BREAKS,
                             limits=c(0, 500))

3 -- I am getting the following warning message : "Warning message: Removed
109 rows containing non-finite values (stat_ecdf)."

The question is : are these 109 values removed from VISUALIZATION as i set
up the "limits", or are these 109 values removed from statistical
CALCULATION?

4 -- in contrast, shall I use the standard R functions plot(ecdf), there is
no "warning mesage"

plot(ecdf(x$LENGTH), xlab="DEL LENGTH",
                     ylab="Fraction of DEL", main="DEL",
xlim=c(0,500),
                     col = "dark red")

Thanks a lot !

-- bogdan

	[[alternative HTML version deleted]]

It is a feature of ggplot that points excluded by limits raise warnings, while
base graphics do not.

You may find that using coord_cartesian with the xlim=c(0,500) argument works
better with ggplot by showing the consequences of points out of the limits on
lines within the viewport.

There are other possible problems with your data that your non-reproducible
example does not show, and sending R code in HTML-formatted email usually
corrupts it.. so please follow the recommendations in the Posting Guide next
time you post.

On July 6, 2018 4:32:41 PM PDT, Bogdan Tanasa <tanasa at gmail.com>
wrote:
>Dear all,
>
>I would appreciate having your advice/suggestions/comments on the
>following
>:
>
>1 -- starting from a vector that contains LENGTHS (numerically, the
>values
>are from 1 to 10 000)
>
>2 -- shall I display the ECDF by using the R code and some
"limits" :
>
>BREAKS = c(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400,
>500,
>         1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000)
>
>ggplot(x, aes(LENGTH)) +
>          stat_ecdf(geom = "point") +
>          scale_x_continuous(name = "LENGTH of DEL",
>                             breaks = BREAKS,
>                             limits=c(0, 500))
>
>3 -- I am getting the following warning message : "Warning message:
>Removed
>109 rows containing non-finite values (stat_ecdf)."
>
>The question is : are these 109 values removed from VISUALIZATION as i
>set
>up the "limits", or are these 109 values removed from statistical
>CALCULATION?
>
>4 -- in contrast, shall I use the standard R functions plot(ecdf),
>there is
>no "warning mesage"
>
>plot(ecdf(x$LENGTH), xlab="DEL LENGTH",
>                     ylab="Fraction of DEL", main="DEL",
xlim=c(0,500),
>                     col = "dark red")
>
>Thanks a lot !
>
>-- bogdan
>
>	[[alternative HTML version deleted]]
>
>______________________________________________
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>PLEASE do read the posting guide
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>and provide commented, minimal, self-contained, reproducible code.
-- 
Sent from my phone. Please excuse my brevity.