Displaying 20 results from an estimated 1000 matches similar to: "Insert segment only on particular facets in ggplot"
2013 Apr 18
5
Subsetting a large number into smaller numbers and find the largest product
Hello,
I have a big number lets say of around hundred digits. I want to subset
that big number into consecutive number of 5 digits and find the product of
those 5 digits. For example my first 5 digit number would be 73167. I need
to check the product of the individual numbers in 73167 and so on.
The sample number is as follows:
2013 Jan 21
1
Faceting in ggplot with 3 series in each plot
I have created a graph with basic R plot with 2 rows and 3 columns. With
the basic plot feature of R I had to write several lines of code to come up
with the graph https://www.dropbox.com/s/f7d6ei6krtcrtti/hello.png
I was wondering whether we can plot multiple series in each plot using
ggplot as created in the above link. If anyone could give me any suggestion
then I could try on ggplot.
I
2013 Apr 19
5
how to subtotal by rows
Dear R-users,
I have a dataset as like below, and I want to subtotal the values of rice,wheat and maize by year for each fid.
fid year rice wheat maize
------------------------------------------------
1 1995 5 NA NA
1 1995 NA 3 NA
1 1995 NA NA 2
1 1996 4 NA NA
1
2013 Feb 07
4
low pass filter analysis in R
Hello R users,
I am trying to use R to do the low pass filter analysis for the tidal data.
I am a novice in R and so far been doing only simple stuffs on R. I found a
package called signal but couldn't find the proper tutorial for the low
pass filter.
Could anyone point me to the proper tutorial or starting point on how to do
low pass filter analysis in R ?
Thank you so much.
Janesh
2013 Feb 19
5
Converting the data in year month day hour and minutes to date
Hi ,
I am trying to convert the date as factor to date using "as.date" function
in R. I have the date in the following format
2008-01-01 02:30
I tried to use the following command :
as.Date(mydata$Date, format="%y-%m-%d ")
Can somebody help me with this ? I was able to convert the format with no
hour but getting difficulty with hour included.
Thank you.
2013 Feb 01
2
Summary of data for each year
Hello All,
I have a data with two columns. In one column it is date and in another
column it is flow data.
I was able to read the data as date and flow data. I used the following
code:
creek <- read.csv("creek.csv")
library(ggplot2)
creek[1:10,]
colnames(creek) <- c("date","flow")
creek$date <- as.Date(creek$date, "%m/%d/%Y")
The link to my data
2013 Feb 16
2
Interpret R-squared and cor in R
Hi I am trying to find the relationship between two variables.
First I fitted a linear model between two variables and I found the
following results:
Residual standard error: 0.03253 on 2498 degrees of freedom
Multiple R-squared: 0.5551, Adjusted R-squared: 0.5549
F-statistic: 3116 on 1 and 2498 DF, p-value: < 2.2e-16
Then I used the cor function to see the correlation between two variable
2013 Jan 21
1
Very slow in processing the equation in the scatter plot ggplot
Hello All,
I have plotted a scatter plot in ggplot2 and added a regression line and a
regression equation. But the processing is very very slow. One reason might
be because I have so many data pairs. Is there any way to speed up this
code ? I need to create a multiple layout as well.
The code I have used is as follows:
setwd("C:/Users/jzd0009/Documents/R software")
mydata <-
2013 Jan 21
2
How to read a file with two data sets in text format
Hello All,
I have a data file in a text format and there are two data sets. The data
set are continuous.
For each data set there is a header which has the number of data rows and
the name of data series.
For example first data set has "6240 Terry Cove-Model". Then the data for
that series follows upto 6240 rows. Then another data would start and it
will have the header such as
2013 Jan 19
1
Is it possible to create color ramp legend in spplot for discontinuous data ?
Hello All,
I have a discontinuous dataset and I used spplot to plot the points.
I was wondering whether it is possible to show the legend of the plot as
color ramp. I saw that on continuous data. If anyone could tell me that
would be great.
Another thing I would like to know is how can we create the horizontal
legend. By default, the legend is vertical.
I was able to shift the legend inside
2013 Jan 22
1
How to assign time series to a vector with one leap year
Hello All,
I am trying to do the time series analysis in R and I want to assign a
vector as a time series. The data I provided is hourly. The data is from
Jan 1 2008 to Dec 31 2009. How can I assign the data such that the first
year is leap year and second is not ?
airtemp <- read.csv("airtemp.csv",header=T,sep="")
aw <- ts(airtemp,start=2008,frequency=8784,end=2009)
2013 Apr 09
1
Solving an integral in R gives the error “The integral is probably divergent”
I am trying to solve an integral in R. However, I am getting an error when
I am trying to solve for that integral.
The equation that I am trying to solve is as follows:
$$ C_m = \frac{{abs{x}}e^{2x}}{\pi^{1/2}}\int_0^t t^{-3/2}e^{-x^2/t-t}dt $$
[image: enter image description here]
The code that I am using is as follows:
a <- seq(from=-10, by=0.5,length=100)
## Create a function to compute
2013 Mar 19
1
Convert to date and time of the year
Dear R Users,
I have data for more than 3 years. For each year I want to find the day
corresponding to Jaunary 1 of that year. For example:
> x <- c('5/5/2007','12/31/2007','1/2/2008')
> #Convert to day of year (julian date) -
> strptime(x,"%m/%d/%Y")$yday+1
[1] 125 365 2
I want to know how to do the same thing but with time added. But I still
2013 Apr 11
2
Read the data from a text file and reshape the data
I have a data set for different time intervals. The data has three comment
lines before data for each time interval. For each time interval there are
500 data points. I want to change the dataset such that I have the following
format:
t1 t2 t3 ................
0.00208 0.00417 0.00625 .................
a1 a2 a3 ...................
2013 Feb 14
1
Clip a contour with shapefile while using contourplot
Hi, I have done the interpolation for my data and I was able to create the
contours in multipanel with the help of Pascal. Now, I want to clip the
contour with the shapefile. I want only the portion of contour to be
displayed which falls inside the boundary of the shapefile.
The data mydata.csv can be found on
https://www.dropbox.com/s/khi7nv0160hi68p/mydata.csv
The data for shapefile can be
2019 Sep 16
2
Maybe bug? Using non-integer frequencies in stats::ts
I am developing a package to analyse physiological time-series and I
thought that the most reliable and robust solution was to base it on the
native stats::ts class. In my domain it is common to express series
frequencies as samples-per-second. So ts(..., frequency=10) would mean a
signal sampled 10 times every second, and ts(..., frequency = 1) a signal
sampled every second. Following this logic,
2011 Jan 20
1
Generating time progressing line for Google Earth
Dear,
I am trying to visualise a time-progressing line (it's supposed to
represent spread patterns) using brew package and Google Earth.
The idea is to have a function which takes start and end point
geographic coordinates, as well as number of intervals to chop the path
up, and returns the collection of points segmenting this line.
Unfortunately my calculations fail for large distances,
2006 Mar 26
2
Problem with names() in a plot after ordering a data.frame. Syntax or stupidity?
I am a complete newbie in R .
Using R 2.2.0 Windows XP
This started as a simple exercise to see if I could
produce a simple
Cleveland style dotchart with a line from the '2' axis
to the dot rather
than a continuous line as do "dotchart" and
"dotchart2". At least I could not
find that option.
I got a crude program to work but it includes
unnecessary steps.
2004 Sep 15
2
efficient submatrix extraction
Hi,
I have a matrix of say 1024x1024 and I want to look at it in chunks.
That is I'd like to divide into a series of submatrices of order 2x2.
| 1 2 3 4 5 6 7 8 ... |
| 1 2 3 4 5 6 7 8 ... |
| 1 2 3 4 5 6 7 8 ... |
| 1 2 3 4 5 6 7 8 ... |
...
So the first submatrix would be
| 1 2 |
| 1 2 |
the second one would be
| 3 4 |
| 3 4 |
and so on. That is I want the matrix to be evenly divided
2013 Apr 24
1
R Interactive Mode
Dear all,
We are doing some research about the time series analysis of NDVI, and
we found the NDVITS package which is a very great tool.
Unfortunately when we run it, after TimeSeriesAnalysis it asks to enter
"Village or Country".
library("ndvits", lib.loc="/home/vahe/R/i686-pc-linux-gnu-library/2.15")