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...e "5:20" (hour:min) and i want to convert these in times recognized by R. I have tried the POSIXct function: balise07$Hour <- as.POSXIct(balise07$Hour) but it didn't work. Do you know why? Do you know how i can convert my string character in a real time? Thanks Karine HEERAH Master 2 mention "océanographie et environnements marins", parcours océanique 42 rue Salvador Allende 92000 Nanterre 06.61.50.97.47 _________________________________________________________________ [[alternative HTML version deleted]]

Hi, I have date and time in a format like this: " 2007-02-21 05:19:00". Do you which function i can use to derterminate the difference in time between this value and an other one. For exemple: this one : 2007-02-21 05:19:00 and this one : 2007-02-20 14:21:53 Thanks a lot, Karine H. _________________________________________________________________

...hought it was a good idea to do an interpolation between the two datasets. I find a script doing that on matlab but i want to do it on R. Do you how to do it? for ii = 1:length(seal_dive_depth07) seal_bathy_depth07(ii) = interp2(long,latg,A,seal_lon07(ii),seal_lat07(ii)); end Karine HEERAH Master 2 mention "océanographie et environnements marins", parcours océanique 42 rue Salvador Allende 92000 Nanterre 06.61.50.97.47 _________________________________________________________________ [[alternative HTML version deleted]]

...inates. Do you know how i can do that? And i will have the same problem with the object that return the krige function (gstat package). It gives me a dataframe, and i want a matrix for the prediction. How can i do that, in order to plot it with the image function after. Thanks a lot Karine HEERAH Master 2 , océanographie et environnements marins Université Pierre et Marie Curie (Paris 6) 42 rue Salvador Allende 92000 Nanterre 06.61.50.97.47 _________________________________________________________________ [[elided Hotmail spam]] tre téléphone! [[alternative HTML versio...

...LatitudeGrid-s6250-Antarctic.hdf", load = TRUE, verbosity = 3, tidy = FALSE) hdf5_global_verbosity=3 load=1 Erreur dans hdf5load("LongitudeLatitudeGrid-s6250-Antarctic.hdf", load = TRUE, : unable to open HDF file: LongitudeLatitudeGrid-s6250-Antarctic.hdf Thanks a lot, Karine HEERAH Master 2 mention "océanographie et environnements marins", parcours océanique 42 rue Salvador Allende 92000 Nanterre 06.61.50.97.47 _________________________________________________________________ [[alternative HTML version deleted]]

hi everybody, How can you plot some dates? I mean how can i have the tickmarks with the label of each date on my x axis? The dates i use are in POSIXct format, i don't know if it matters. thanks a lot Karine _________________________________________________________________ Consultez vos emails Orange, Gmail, Yahoo!, Free ... directement depuis HOTMAIL !

Hi, I am using the nls function and it stops because the number of iterations exceeded 50, but i used the nls.control argument to allow for 500 iterations. Do you have any idea why it's not working? fm1 <- nls(npe ~ SSgompertz(npo, Asym, b2, b3), data=f,control=nls.control(maxiter=500)) Thanks for your help, Cheers, Karine.

hi, how can i do cluster analysis on spatial data? (longitude & latitude) Because i used the function clust of the clustTool package and it did'nt work at all: cl <- clust(dv,3,method="hclustAverage",distMethod="euclidean") thanks a lot Karine HEERAH Master 2 , océanographie et environnements marins Université Pierre et Marie Curie (Paris 6) _________________________________________________________________ Consultez gratuitement vos emails Orange, Gmail, Free, ... directement dans HOTMAIL ! [[alternative HTML version delete...

Hi, I am using the nls function and it stops because the number of iterations exceeded 50, but i used the nls.control argument to allow for 500 iterations. Do you have any idea why it's not working? fm1 <- nls(npe ~ SSgompertz(npo, Asym, b2, b3), data=f,control=nls.control(maxiter=500)) Error in nls(y ~ exp(-b2 * b3^x), data = xy, algorithm = "plinear", start = c(b2 =

Hi everybody, I am using the contour function to draw isobares. And i would like to to bold contours for an interval of 500m and weak contour for an interval of 100m. Can someone help me with this? Thanks a lot Karine _________________________________________________________________ [[elided Hotmail spam]] [[alternative HTML version deleted]]

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 couple of longitude, latitude coordinates. Do you know a function or a