polar coordinate plot with 2 geoms

[Frank]

Hi there,

I'm completely new to R and ggplot2 but fedup with Excel.
I have data on discrete positions on a circular object, which I want to show in a polar coordinate plot. To each position there are multiple observations. I have sample data with 10 positions and 22 observations each.
What I want to create is a simple scatterplot (with some jitter as differences in points aren't that large) and in addition a lineplot connecting dots but not for each row, only for selected rows, like every 4th or 5th.
What I did was this:
library(ggplot2)
Daten = read.table("/home/frank/data")
KV = data.frame(Daten) # I did this, because I was getting errors about some non implementation of "list". No idea if it actually helped.

Bild = ggplot() + coord_polar() + ylim(-30, NA) + scale_x_continuous(breaks = seq(1, 10, by = 1), limits = c(1,11), minor_breaks = NULL)
for (i in 2 : 11) { # this loop runs fine and produces exactly what I want
  Bild = Bild + geom_jitter(aes_string(x = KV[2,i], y = KV[,i]), width = 0.15)
}
#for (i in 3 : 23){
#  Bild = Bild + geom_line(aes_string(x = KV[2, 2 : 11], y = KV[i, 2 : 11]))
#}

I don't seem to get the second part to run, having additional lines connecting the points. I left out some conditional i mod 4 in an attempt to get any lines to show.I get the error message "Unknown input: data.frame"
Is there a way to have ordered jitter, pushing points only to one direction or along a curve?

[Ron Crump]

Hi Frank,

> I'm completely new to R and ggplot2 but fedup with Excel.

Welcome. You'll find there is a bit of a learning curve, but
I think the results are worth it in the end - quality of graphics,
reproducibility etc.

This list is a bit quiet these days, as we are being encouraged
to use the RStudios Community web site for tidyverse (includes
ggplot2) support (https://community.rstudio.com/)

First thing to note is that it is good preactice to provide a
minimal reproducibe example (reprex), including data, in order that
people can easily cut and paste your data and code, run it and
make any changes. (see
https://community.rstudio.com/t/faq-whats-a-reproducible-example-reprex-and-how-do-i-create-one/5219).
This
applies both to the forums and this mailing list.

I believe most of your difficulties are a result of having 'wide'
rather than 'long' data. That is, you have multiple columns
of y data rather than one long column with a second column. Switching to
long format would, for example, remove the need for a loop in your
geom_jitter call and should at least resolve the Unknown input (you are
providing a data.frame to y when it wants a vector) in the geom_line.

Without seeing your data, I don't think I understand the second loop.

I hope this is some help, but if you post your query with a reprex
on the rstudio community forums I am sure you will get a complete
solution from one of the lovely people that hang out there.

Best wishes,
Ron.

[Frank]

I found the button to attach pictures but not for files.
Anyway it looks like this.
text    1    2    3    4    5    6    7    8    9    10
0    1    2    3    4    5    6    7    8    9    10
0    0    0    0    0    0    0    0    0    0    0
100    4    4    4    3    8    0    2    2    1    2
200    11    9    10    5    14    1    5    3    3    4
300    12    10    11    5    19    1    9    5    6    9
400    18    15    16    9    27    1    10    7    6    13
500    18    15    17    12    35    1    12    9    10    16
600    25    21    21    12    35    3    16    9    12    17
700    30    22    25    14    38    5    20    10    12    22
800    35    27    30    14    40    5    24    10    13    22
900    37    28    34    18    41    6    24    12    19    26
1000    39    33    39    21    43    6    24    13    24    26
1100    39    39    44    22    50    8    27    15    25    31
1200    39    44    44    23    50    9    29    15    29    33
1300    46    49    46    23    58    9    30    17    29    33
1400    53    52    48    23    65    9    31    19    32    34
1500    59    52    51    26    70    10    35    20    35    42
1600    64    52    54    28    74    12    36    22    36    49
1700    64    57    58    28    77    13    38    24    37    49
1800    70    62    64    29    83    14    39    24    42    57
1900    77    65    67    30    85    14    42    24    48    63
2000    77    70    67    34    87    16    45    25    48    64

The code I posted above is everything I wrote in my attempt to graph the data.The columns are my positions of observation and in each row are observed events. As you can see I was able to plot all events corresponding to each position. Now I want additional line graphs for say row 5, 10, 15, 20 connecting the points (along the columns). That is what the second loop was for. This is the format I enter data and I thought the data is internally handled as a matrix from which I simply choose which row or column I want the values to be represented on the x axes and some other row or column for the y axes. But I guess this a lack of understanding on my end. I don't want to set up a new file simply because in addition I want to look at a graph of position 5 plotted from 0 to 2000. I thought of it as geom_line(aes(x = column1, y = column5)), boom finished.

In gnuplot it looks like this in a cartesian coordinate system (looks ugly in polar). Axes limits aren't set up properly.


Thanks for the help so far. I will definitely check out the