I am trying to run the asdetect package on my time series data. The age data for my time series data starts at -65 years and goes to 13800 years. The dt function by default counts number of rows instead of the actual age. When I customize the interval between tick marks on the x-axis (dt) based on the number of data points divided by the maximum age, it causes the plot to start at 0, which is not accurate. Is there a way to change the x-axis labeling from a time-based scale to the actual age data?
This is what I tried:
detect1 <- asdetect::as_detect(charcoal$influx_area_mm2xcm2xyr, dt=0.5)
or
detect1 <- asdetect::as_detect(charcoal$influx_area_mm2xcm2xyr, dt=38.4)
plot(detect1, type="l", xlab='Time', ylab='Detection Value', ylim=c())
I have neuroscientific data where we count synapses/cells in the cochlea and quantify these per frequency. We do this for animals of different ages. What I thus ideally want is the frequencies (5,10,20,30,40) in the x-axis and the amount of synapses/cells plotted on the y-axis (usually a numerical value from 10 - 20). The graph then will contain 5 lines of the different ages (6 weeks, 17 weeks, 43 weeks, 69 weeks and 96 weeks).
I try this with ggplot and first just want to plot one age. When I use the following command:
ggplot(mydata, aes(x=Frequency, y=puncta6)) + geom_line()
I get a graph, but no line and the following error: 'geom_path: Each group consists of only one observation. Do you need to adjust the group aesthetic?'
So I found I have to adjust the code to:
ggplot(mydata, aes(x=Frequency, y=puncta6, group = 1)) + geom_line()
This works, except for the fact that my first data point (5 kHz) is now plotted behind my last data point (40 kHz)......... (This also happens without the 'group = 1' addition). How do I solve this or is there an easier way to plot this kind of data?
I couldnt add a file so I added a photo of my code + graph with the 5 kHz data point oddly located and I added a photo of my data in excel.
example data
example code and graph
I am a beginner of R.
The question is that you have this data set ready plot the monthly average temperature over the entire length of the data set. That is, on the x-axis plot the months (numbered 1, 2, 3…. 12, 13, 14,…), while on the y-axis plot the monthly averages.
I already have the data set like this
my attempt is
plot(Temp$month,Temp$averagetemp)
the result is
I wonder how to change the code.
You can create a new variable that counts by months:
Temp$month_addative <- Temp$month + (Temp$year-min(Temp$year))*12
plot(Temp$month_additive,Temp$averagetemp)
Assuming 2003 is your lowest year, this will add 12 for every year past 2003 to the month number, creating a cumulative count of months.
I'm working on some fish electroshocking data and looking at fish species abundance per transects in a river. Essentially, I have an abundance of different species per transect that I'm plotting in a stacked bar chart. But, what I would like to do is label the top of the bar, or underneath the x-axis tick mark with N = Total Preds for that particular transect. The abundance being plotted is the number of that particular species divided by the total number of fish (preds) that were caught at that transect. I am having trouble figuring out a way to do this since I don't want to label the plot with the actual y-value that is being plotted.
Excuse the crude code. I am newer to R and not super familiar with generating random datasets. The following is what I came up with. Obviously in my real data the abundance % per transect always adds up to 100 %, but the idea is to be able to label the graph with TotalPreds for a transect.
#random data
Transect<-c(1:20)
Habitat<-c("Sand","Gravel")
Species<-c("Smallmouth","Darter","Rock Bass","Chub")
Abund<-runif(20,0.0,100.0)
TotalPreds<-sample(1:139,20,replace=TRUE)
data<-data.frame(Transect,Habitat,Species,Abund,TotalPreds)
#Generate plot
AbundChart<-ggplot(data=data,aes(x=Transect,y=Abund,fill=Species))
AbundChart+labs(title="Shocking Fish Abundance")+theme_bw()+
scale_y_continuous("Relative Abundance (%)",expand=c(0.02,0),
breaks=seq(0,100,by=20),labels=seq(0,100,by=20))+
scale_x_discrete("Transect",expand=c(0.03,0))+
theme(plot.title=element_text(face='bold',vjust=2,size=25))+
theme(legend.title=element_text(vjust=5,size=15))+
geom_bar(stat="identity",colour="black")+
facet_grid(~Habitat,labeller=label_both,scales="free_x")
I get this plot that I would like to label with TotalPreds as described previously.
Again my plot would have bars that reached 100% for abundance, and in my real data transects 1-10 are gravel and 11-20 are sand. Excuse my poor sample dataset.
*Update
My actual data looks like this:
Variable in this case is the fish species and value is the abundance of that species at that particular electroshocking transect. Total_Preds is repeated when the data moves to a new species, because total preds is indicative of the total preds caught at that particular transect (i.e. each transect only has 1 total preds value). Maybe the melt function wasn't the right way to analyze this, but I have like 17 fish species that were caught at different rates across these 20 transects. I guess habitat type is singular to a transect as well, with 1-10 being gravel and 11-20 being sand, and that is repeated in my dataset across fish species as well.
Edited in response to the update, you should be able to create a new dataframe containing the TotalPred data (not repeated) and use that in geom_text. Can't test this without data but maybe:
# select non-repeated half of melted data for use in geom_text
textlabels <- data[c(1:19),]
#Generate plot
AbundChart<-ggplot(data=data,aes(x=Transect,y=Abund,fill=Species))
AbundChart+labs(title="Shocking Fish Abundance")+theme_bw()+
scale_y_continuous("Relative Abundance (%)",expand=c(0.02,0),breaks=seq(0,100,by=20),labels=seq(0,100,by=20))+
scale_x_discrete("Transect",expand=c(0.03,0))+
theme(plot.title=element_text(face='bold',vjust=2,size=25))+
theme(legend.title=element_text(vjust=5,size=15))+
geom_bar(stat="identity",colour="black")+
facet_grid(~Habitat,labeller=label_both,scales="free_x") +
geom_text(data = textlabels, aes(x = Transect_ID, y = value, vjust = -0.5,label = TotalPreds))
You might have to play around with different values for vjust to get the labels where you want them.
See the geom_text help page for more info.
Hope that edit works with your data.
I have a dataset with records that have two variables: "time" which are id's of decades, and "latitude" which are geographic latitudes. I have 7 time periods (numbered from 26 to 32).
I want to visualize a potential shift in latitude through time. So what I need ggplot2 to do, is to plot a graph with latitude on the x-axis and the count of records at a certain latitude on the y-axis. I need it do this for the seperate time periods and plot everything in 1 graph.
I understood that I need the function freqpoly from ggplot2, and I got this so far:
qplot(latitude, data = lat_data, geom = "freqpoly", binwidth = 0.25)
This gives me the correct graph of the data, ignoring the time. But how can I implement the time? I tried subsetting the data, but I can't really figure out if this is the best way..
So basically I'm trying to get a graph with 7 lines showing the frequency distribution in each decade in order to look for a latitude shift.
Thanks!!
Without sample data it is hard to answer but try to add color=factor(time) (where time is name of your column with time periods). This will draw lines for each time period in different color.
qplot(latitude, data = lat_data, geom = "freqpoly", binwidth = 0.25,
color=factor(time))