[R studio] Plotting of line chart for each columns at 1 page

I assume that you are importing the Excel sheets separately. When you
import a sheet, you can get the number of columns with this:

ncol(<name of data frame>)

Using the data frame "mpg" that I created:

ncolumns<-ncol(mpg)
ncolumns
[1] 38

You can then substitute "ncolumns" each time you import another sheet. How
you want to deal with the varying numbers of columns you will get is
another matter. One way is to work out the total number of plots you want
and put them all onto one PDF page. Say you have 50 plots overall. You
could start a very big PDF page:

pdf("allplots.pdf",width=30,height=15)
par(mfrow=c(5,10))
# import your first sheet here (38 columns)
ncolumns<-ncol(mpg)
for(i in 1:ncolumns)
 plot(seq(1,500,length.out=10),mpg[,i],type="l",xlab="Distance",
  ylab="MPG",main=names(mpg)[i])# import your second sheet here, say 10
columns
# import your second sheet here, (10 columns)
ncolumns<-ncol(mpg1)
for(i in 1:ncolumns)
 plot(seq(1,500,length.out=10),mpg1[,i],type="l",xlab="Distance",
  ylab="MPG",main=names(mpg)[i])# import your third sheet here, say 2
columns
# import your second sheet here, (2 columns)
ncolumns<-ncol(mpg2)
for(i in 1:ncolumns)
 plot(seq(1,500,length.out=10),mpg2[,i],type="l",xlab="Distance",
  ylab="MPG",main=names(mpg)[i])
# finish plotting
dev.off()

You would then have 50 plots on the PDF page. I am assuming that all of
your sheets have the same number of rows and a few other things. This seems
like a lot of plots, and I suspect that you could work out a better way to
display all this information.

Jim


On Wed, Nov 21, 2018 at 1:20 PM Subhamitra Patra <
subhamitra.patra at gmail.com> wrote:

Hello Sir,

Thanks, now I understood and will check them out.

One more thing I want to ask that I have 1 excel file with multiple (i.e.
12 sheets). Each sheet contains different number of columns, for instance,
1st sheet contains 38 columns, 2nd sheet contains 10 columns, Third 2
columns, 4th 1 column and so on. Actually, due to some missing observations
in these columns, I couldn't add them in 1 sheet.

As you suggested the below code in the last mail,

par(mfrow=c(4,10))
for(i in 1:38)
 plot(seq(1,500,length.out=10),mpg[,i],type="l",xlab="Distance",
  ylab="MPG",main=names(mpg)[i])
dev.off()

Do I need to run the code separately for each sheet?

Actually, in par (mfrow=c(4,10)), the plot for 38 columns will be added,
the space for extra 2 will remain as empty. So, I thought to add plots for
the columns from the next sheet in those emptied space.

Is there any way that I can add plots from the next sheets of the same
excel file in the emptied space? In other words, Is there any way to append
plots from all sheets?

Kindly help a new R learner Sir for which I shall be always grateful to
you.

Thank you very much for your kind help.



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On Wed, Nov 21, 2018 at 7:17 AM Jim Lemon <drjimlemon at gmail.com> wrote:

Hi Subhamitra,

1. Here I manufacture some data so that the example is "reproducible",
that is anyone can run the code and get the same output that I do. Yes,
veh1...veh38 are the names of the variables.

2. Here I join the 38 variables I created into a data frame, which I
think is the input for your plotting routine. This names of the columns of
the data frame become the names of the variables.

When you say that you want the column names as the "header" (title) of
each plot, I think if you change the plotting loop to this:

pdf("mpg.pdf",width=30,height=12)
par(mfrow=c(4,10))
for(i in 1:38)
 plot(seq(1,500,length.out=10),mpg[,i],type="l",xlab="Distance",
  ylab="MPG",main=names(mpg)[i])
dev.off()

you will get what you requested. Remember that I have done this in base
graphics, not ggplot.

Jim

On Wed, Nov 21, 2018 at 12:37 PM Subhamitra Patra <
subhamitra.patra at gmail.com> wrote:

Hello Sir,

Thanks, I'll check them out.

But, I am not understanding 2 points of your suggestion.

1. In the line,* "*for(i in 1:38) assign(paste0("veh",i),rep(sam
ple(10:35,1),10)+runif(10,-4,*4))", *what veh, rep(sample(10:35,1),10)
+runif(10,-4,4)) indicate? Here veh indicates columns right?
*2. In the
line, mpg<-data.frame(veh1,veh2,veh3,veh4,veh5,veh6,veh7,veh8,veh9,veh10,*
* veh11,veh12,veh13,veh14,**veh15,veh16,veh17,veh18,veh19,**veh20,*
* veh21,veh22,veh23,veh24,**veh25,veh26,veh27,veh28,veh29,**veh30,*
* veh31,veh32,veh33,veh34,**veh35,veh36,veh37,veh38)  ** , *veh[i]
indicates column sequence, right? I need to give column names as the header
of their respective graphs. Please suggest me How to add this?


I am very new to R and therefore asking you these queries which might
be simple for you.

I expect positive help from you.

Thanks for your kind help.
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On Wed, Nov 21, 2018 at 4:38 AM Jim Lemon <drjimlemon at gmail.com> wrote:

Hi Subhamitra,
As Bert noted, you are mixing base and grid graphics. Here is a simple
way to get a plot like what you described. It will probably take more
work to find what you actually do want and discover how to get it.

for(i in 1:38)
assign(paste0("veh",i),rep(sample(10:35,1),10)+runif(10,-4,4))
mpg<-data.frame(veh1,veh2,veh3,veh4,veh5,veh6,veh7,veh8,veh9,veh10,
 veh11,veh12,veh13,veh14,veh15,veh16,veh17,veh18,veh19,veh20,
 veh21,veh22,veh23,veh24,veh25,veh26,veh27,veh28,veh29,veh30,
 veh31,veh32,veh33,veh34,veh35,veh36,veh37,veh38)
pdf("mpg.pdf",width=30,height=12)
par(mfrow=c(4,10))
for(i in 1:38)
 plot(seq(1,500,length.out=10),mpg[,i],type="l",xlab="Distance",
  ylab=names(mpg)[i],main="MPG by distance")
dev.off()

Jim

On Wed, Nov 21, 2018 at 5:19 AM Subhamitra Patra
<subhamitra.patra at gmail.com> wrote:

Dear R users,

I have one excel file with 5 sheets. The no. of columns vary for each
sheet. The 1st sheet consists of 38 columns. So, I want to plot 38

separate

line charts and arrange them in par(mfrow = c(4, 10)) order. Please

suggest

me how to do this. I have tried with the following code by running a

loop

inside of a sheet, but it is not working. Further, I want to run

loops for

each sheet.

par(mfrow = c(4, 10))
loop.vector <- 1:38
for (i in loop.vector)
x <- JJ[,i]
library(ggplot2)
  library(cowplot)
  plot.mpg <- ggplot(mpg, aes(x,
                              main = paste ("country", i),
                              xlab = "Scores",
                              xlim = c(1,500)
                              y = colnames[i,], colour =

factor(cyl))) +

  geom_line(size=2.5)
save_plot("mpg.png", plot.mpg,
          base_aspect_ratio = 1.3)

I want to give my X axis name as scores of (1,500) and Y axis as the
particular column names for all graphs.

Please suggest.

Thanks in advance.

--
*Best Regards,*
*Subhamitra Patra*
*Phd. Research Scholar*
*Department of Humanities and Social Sciences*
*Indian Institute of Technology, Kharagpur*
*INDIA*








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--
*Best Regards,*
*Subhamitra Patra*
*Phd. Research Scholar*
*Department of Humanities and Social Sciences*
*Indian Institute of Technology, Kharagpur*
*INDIA*

--
*Best Regards,*
*Subhamitra Patra*
*Phd. Research Scholar*
*Department of Humanities and Social Sciences*
*Indian Institute of Technology, Kharagpur*
*INDIA*