search for: longitude

...not working. I even tried a similar example in UCLA webpage: http://www.ats.ucla.edu/stat/R/faq/sort.htm :it also does not seem to work. "*sort1.hsb2 <- hsb2[order(read) , ]"* Do you have any idea how to deal with this problem?? Thank you so much. -Hyo > colnames(ttx1) [1] "longitude 1" "longitude 2" "longitude 3" "longitude 4" "longitude 5" [6] "longitude 6" "longitude 7" "longitude 8" "longitude 9" "longitude 10" [11] "longitude 11" "longitude 12" "...

Dear all, I have been trying to convert coordinates from longitude/latitude to utm but I got an error. As soon as the longitude coordinate is greater than 90, I get the folloowing error message: "error in pj_transform: latitude or longitude exceeded limits" Here is what I did: SP<-SpatialPoints(cbind(126.59,-14.30),proj4string=CRS("+proj=long...

Dear useRs, I search for a possibillity to plot stacked bars at specific x positions. I tried and tried, but the only way i got something adequate was by using lowlevel plots segments(). That is quiet ok, but will not please eyes without a lot of par() lines. dh<-data.frame(longitude=abs(rnorm(5)),deers=abs(rnorm(5)),humans=abs(rnorm(5))) plot(dh$longitude,apply(dh[,2:3], 1, sum),type="n",ylim=c(0,max(apply(dh[,2:3], 1, sum)))) segments(dh$longitude,0,dh$longitude,dh$deers, col="green", lwd=12) segments(dh$longitude,dh$deers,dh$longitude,dh$deers+dh$humans,...

Hi, i am using spatstat package for spatial data analysis and now i have a problem to create a point pattern. The points are in file "points.txt" (first column for Latitude and second column for Longitude ) and I imported them and separated each columns in two arrays x and y. If I plots x and y ( e.g plot(x,y) ) the result appears in square area without problems and the scale is adequate to visual analysis of points ploted. But if i try to use ppp function to create a point pattern the result appe...

Good day to you all, I have lightning data containing date, time, latitude and longitude. I hope that distribution of latitude and longitude will give number of lightning occurrence in a region. I have used factor function to sum up the number of events on latitude and longitude axis and saved as x and y. But when I tried to plot the two, I had and error message ( Error in image.defaul...

I am new to the world of R/programming so this may be a really easy question. I thank you for your patience and help in advance I would like the characters km^2 to be displayed on the plot subtitle as km squared - two as a superscript. I would also like to have the numbers from the data set for longitude and latitude to be rounded to four decimal places. Thank you. plot ( decade[['date']], decade[['value']], type = 'l', col = 'lightsteelblue4', ylab = 'Discharge [cms]', main = sprintf('%s [%s]', stn[['metadata']][['name'...

Hi all, I need a little help for construct an state's map on R. The first problem is to get the data. I have a datafile of longitude and latitude in the follow format: trajectory latitude longtude T -22.045618 -51.287056 T -22.067078 -51.265888 T -22.067039 -51.207249 T -22.059690 -48.089695 T -22.075529 -48.074608 T -22.072460 -48.044472 T -22.062767 -48.298473 T -22.077349 -48.322140 T -22.047001 -48.347443 T -22....

Hi Team, Need your guidance in building SPDF objects from Latitude, Longitude Information available. I am using package "plotGoogleMaps" which is really awesome but it requires SPDF objects to build the maps. I have a data frame which have Latitude and Longitude information and wanted to convert it in SPDF for making maps. Please help me to find suitable package o...

Hello R-helpers, I am trying to search for string that includes the caret symbol, using the following code: grepl("latitude^2",temp) And R doesn't like that. It gives me: > temp<-c("latitude^2","latitude and latitude^2","longitude^2","longitude and longitude^2") > temp [1] "latitude^2" "latitude and latitude^2" "longitude^2" "longitude and longitude^2" > grepl("latitude^2",temp) [1] FALSE FALSE FALSE FALSE I think this must...

Hi everybody, I have a list, where every element of this list is a data frame. An example: Mylist<-list(A=data.frame, B=data.frame, C=data.frame, D=data.frame) I want to rbind some elements of this list. As an example: Output<-list(AB=data.frame, CD=data.frame) Where AB=rbind(A,B) CD=rbind(C,D) I’ve tried: f<-function(x){ for (i in

I have 100 data files, which contains very huge data sets of location details ( e.g latitude, longitude, time, temp) Now I would like to save the all data of these 100 files in r object, so I can reload data any time. * Every file has different length of data latitude <- NULL longitude <- NULL time <- NULL temp <- NULL for ( i in 1:100) { data<- rea...

Dear R Users, I'm trying to use the 'cast' function in the 'reshape' package to convert column-format data to gridded-format data. A sample of my dataset is as follows: head(finalframe) Latitude Longitude Temperature OrigLat p-value Blaney 1 -90 -38.75 NA -87.75 17.10167 NA 2 -90 135.75 NA -87.75 17.10167 NA 3 -90 80.25 NA -87.75 17.10167 NA 4 -90 95.75 NA -87.75 17.10167 NA 5 -90 66.75 NA -...

Hello, This is probably very simple but I am trying to select a region from the OIv2 SST dataset that crosses 0 longitude. The longitude variable is arranged from 0 to 360 and I get an error message when trying to go from 330 to 30 for example. The data are from a NOAA netCDF file. *temp = open.ncdf("c:/documents and settings/theoni/desktop/sstoi_v2.nc") print(temp) y1 = get.var.ncdf( temp, "latitude&q...

Hi all, I would like to know a way of calculating the distance between 2 points when I already have the longitude and latitude of the points. For example : Point 1 : 52? 9'54.00"N 4?25'8.40"E Point 2 : 52?27'46.80"N 4?33'18.00"E Distance between point 1 and point in km .... Is there any functions already available for this ? Any help will be much appreciated! -...

...954 49.573 -32.71450 57.29733 19 Atlantis 1217 Fmax 0.1740 0.5200 0.1830 0.8770 79.595 -32.71450 57.29733 20 Atlantis 1217 Below 0.0235 0.0486 0.0242 0.0963 199.067 -32.71450 57.29733 21 Atlantis 1225 Surface 0.0764 0.1490 0.0333 0.2587 0.409 -32.71133 57.27150 *# Obtaining longitude and depth data* *Long <- SMfrac[,6]* *dbar <- -SMfrac[,5] #reverse depth* * * *#converting data to percentage of total chl a* * * *picoFrac <- Atlantis$Pico/Atlantis$Total_Ch*100* *nanoFrac <- Atlantis$Nano/Atlantis$Total_Ch*100* *microFrac <- Atlantis$Micro/Atlantis$Total_Ch*100* *...

...60 rows of global population density values, and hope to convert this to column format using the 'melt' command in the 'reshape' package. I'm not receiving any errors as such, but when the code has finished running, my output looks like this: > head(PopDens.long) Latitude Longitude PopDensity 1 -84.75 V1 0 2 -84.25 V1 0 3 -83.75 V1 0 4 -83.25 V1 0 5 -82.75 V1 0 6 -82.25 V1 0 > tail(PopDens.long) Latitude Longitude PopDensity 232658 87.25 V720 -...

...s made in, I adjust the latitudinal coordinate using: grd<-lm(lat~lon+Row,data) data$lat<-predict(grd[,c("lon","Row")]) which adjusts the latitude pretty well when the rows run East-West, but not at all when the rows run North-South, and it doesn't adjust the longitude at all. Is there a better approach I could use to adjust both longitude and latitude onto the nearest point in the row, whatever the direction of the rows? In other words, move the point onto the row in a direction that is perpendicular to the row? cheers, Mikkel

hi, i have a longitude vector (x) a latitude vector (y) and a matrix of bathymetry (z) with the dimensions (x,y). I have already succeeded in plotting it with the image.plot (package 'field') and the contour functions. But now, I want to make a grid in order to extract easily the bathymetry corresponding to a co...

Hi list, I have a problem to solve which I believe I shoudl use the convolve to solve it, but I could not figure out how to do it. I got mydata, which is a dataframe which has 7 locations, each location has a longitude,latitude and a value. considering a step of 0.5 degree for longitudes and latitudes, I got 15 points for longitude and 15 points for latitude. Then I created a grid, mygrid, which has 15 columns for longitudes and 15 rows for latitudes. Now I want to have a circle which moves from mygrid[1,1] (colu...

...lygons in panel graphs produced by xyplot ? I made different trials (see below) with polygon() and grid.polygon() but polygons are not drawn (probably for the same reason that prevents the use of lines, points, etc. in xyplot panels). Thanks in advance, Renaud > Water id label longitude latitude 515 21 Zone inondable -14.91929 15.27983 516 21 Zone inondable -14.91803 15.27967 517 21 Zone inondable -14.91765 15.27990 518 21 Zone inondable -14.91722 15.28029 519 21 Zone inondable -14.91706 15.28061 520 21 Zone inondable -14.91672 15.28125 521 21 Zone inondable -14.9156...