[R] Combining dataframes with different row numbers and plotting with ggplot2

[Michael Dewey]

Sorry Maryam but I use neither reshape nor ggplot2 so I will leave it to 
others to advise you.

On 09/01/2016 14:29, maryam moazam wrote:
>
> Dear Michael,
>
> Thanks for your feedback. Actually, I would like to show (and compare)
> size distribution of df1 and df2 in the single plot using ggplot2,
> something like the attached picture. The command dosesn't lead me to
> this purpose. However, I'm really new here, could you please help
> me more on this?
>
>
> Thanks in advance,
> Maryam
>
>
>
>
>
> On Sat, Jan 9, 2016 at 5:38 PM, Michael Dewey <lists at dewey.myzen.co.uk
> <mailto:lists at dewey.myzen.co.uk>> wrote:
>
>     Dear Maryam
>
>     If you just need all the values of size would
>     c(df1$size, df2$size)
>     work?
>
>     On 08/01/2016 21:44, maryam moazam wrote:
>
>         Dear Sir / Madam,
>
>         I have just come to the amazing R software, so please be patient
>         if my
>         question is basic for you. I have 2 text file (say 1.txt and
>         2.txt), each
>         file containing 2 columns and different row numbers, like below
>
>         case size
>         case1 120
>         case2 120
>         case3 121
>         case4 121
>         case5 121
>         case6 122
>         case7 122
>         case8 123
>
>         I would like to have a one plot for all text files, with x-axis
>         shows the
>         size between 300-1200 with the interval of 200
>         (300,500,700,900,1200) and
>         size between 1201-1500 with the interval of 1000. For dataframes
>         with the
>         equal row numbers, the following codes worked well,
>
>         df1 = data.frame("1.txt", header=T)
>         df2 = data.frame("2.txt", header=T)
>         *combining two dataframes with equal row number*
>
>         df = data.frame(df1$size,df2$size)
>         library(reshape)
>         melted <- melt(df)
>
>         ggplot(data=melted, aes(value))+aes(fill=variable)+ geom_histogram
>         (binwidth =500)+
>
>         +scale_x_continuous(breaks=c(seq(300,1000,by=200),seq(1001,15000,by=1000)))
>
>
>         but I couldn't reproduce the plot with these codes for
>         dataframes with
>         different row number. I think the problem is* how to combine
>         datafrmaes
>         with the different row number*, could you please help me out on
>         this issue?
>
>         Thank you in advance
>
>                  [[alternative HTML version deleted]]
>
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>
>     --
>     Michael
>     http://www.dewey.myzen.co.uk/home.html
>
>
>

-- 
Michael
http://www.dewey.myzen.co.uk/home.html