search for: tide

I have been trying to visualize times of lowest tides, month by month. I have tide predictions with times either in unix time or a text format, and heights in feet or meters. I had been able to derive the clock times of each prediction. I would now like to graph this data with points showing heights as "r" and times as "theta"...

...obably use but I only listed the ones that I wanted to test. I had also coded the ones that are labels and not continuous data using the as.factor command and I ran the most complex model and ran summary() and it seemed to have worked fine. My model was: fm2test<-lmer(Feeding~MF.vs.OF+Age.class+tide.h.l+Site+HDp+(1|Brood), data=ABMtest.df) and then I wanted to use the dredge command as so: dd<-dredge(fm2test, trace=TRUE, rank="AICc", REML=FALSE) I got an error: Error in UseMethod("fixef") : no applicable method for 'fixef' applied to an object of class &quot...

Dear all, I want make correction depth of a bathymetric data set. To do so, I have the depth data set sample every second (a depth at each second) in one hand, and in the other hand, I have a tide variation level data set sample every 250 ms. The time register in each data sets (tide and bathymetric) is express in seconds followinf this format : hh:mm:ss.ss I would like to rectify the depth (bathymetry) by substrating the tide at each depth time. I tried to construct time series using pa...

...ple but it is being difficult for me. I'd like to calculate the difference in percent between to measures. My data looks like this: set.seed(123) df1 <- data.frame(measure = rep(c("A1", "A2", "A3"), each=3), water = sample(c(100:200), 9), tide = sample(c(-10:+10), 9)) df1 # What I want to calculate is: # tide_[A2] / water_[A1], # tide_[A3] / water_[A2] # This 'works' for the example, but I am # looking for a more general solution. df1$tide_diff <- ave(df1$tide, FUN=function(L) L / c(NA, NA, NA, df1$wa...

Hi R folk, I have a time series of scalar downstream velocity data measured across a tidal channel. The variables are the locations in bins across the channel, the samples are over time. The fluctuation over the tide cycle is an enormous fraction of the time variation in the data ... 96%. The spectral energy of the tide is concentrated in a couple bands that make up the major constituents of the tide. Over short periods, we could pretend there are just two frequencies, though they are really clusters of nearby...

...seudo-replication but also let me look at partial use of mudflats in one of the other broods that only used it periodically. So, for this part of the analysis I would like to see which factors affect the amount of time feeding. I set up a global model with ten fixed variables plus (1|Brood). Site, tide.h.l, tide.inc.out, MF.vs.OF, Human Disturbance Rate (HDr), Human Disturbance proportion of time(HDp), non-Human Disturbance (two variables as for Human Disturbance) and Age and mean.foraging.rate. As so: gm1<-lmer(Feeding~Site+tide.level+MF.vs.OF+HDr+HDp+NHDr+NHDp+Age+mean.for.rate+(1|Brood), d...

...had an equal but opposite effect on foraging rate, when compared to bay shores. The results also indicated that foraging rate was highest for adults during the post-breeding stage. In addition, vehicles had a 2.3 times larger effect on foraging adults than people. Finally, foraging rates during low tide were higher than at high tide by a factor of 2.5, as would be expected." As you can see, their explanation seems to suggest that all values are comparable e.g. vehicles and people. When I ran the model average I also got an Intercept estimate but only the second and beyond categorical Estima...

I''ve tried 0.11.4, and it has not yet crashed, even after I removed (most of) the workarounds. However, the same is also true of 0.11.3... I haven''t seen any of these crashes for several days, which is a very good thing. I can''t remember all the workarounds I did to sidestep the crashing; some of them I don''t want to reverse because they actually were also

Hello, My tests are messing with one another because it seems that they aren''t cleaning the database after execution. I have the tables headlines and articles. And the articles table has a foreign key to the headlines table. My schema structure is created by this script ---- drop table if exists changes; drop table if exists articles; drop table if exists headlines; create table

We have a third party mail system which can write/read accounts to/from AD using ldaps protocol, it works fine with active directory of windows server 2003. When I test the mail system with samba4 DC, I can't disable user from the mail system, because the mail system write 0x800002 (8388610,UF_ACCOUNTDISABLED | UF_PASSWORDEXPIRED) to userAccountControl field of AD/samba4, and samldb returns

I must apologize in advance for asking a simple question. I am sure that a clue will be sufficient to get this show on the road. I am trying to graph tide prediction data in various ways. I haven't been able to answer this question after pouring over TFM. I read the datafile theight <- read.table("tides",header=TRUE) I do get a summary() or fivenum() summary(theight) fivenum(theight) But when I run stem...

...This didn't work. Ultimately I used a for loop, which is very slow and it produces the following error. The last column is the difference in times between subsequent posit values. The fourth row shows a 2 hour gap between events. (This did not happen in any of the other days. ) tide posit diffh y365 diftime 7223 -1.25 1901-10-28 22:00:00 -2.7 301 1 7224 -2.75 1901-10-28 23:00:00 -1.5 301 1 7225 -2.25 1901-10-29 00:00:00 0.5 302 1 7226 -0.25 1901-10-29 01:00:00 2.0 302 2 7227 2.65 1901-10-29 02:00:00 2.9 302 1 Any help...

Does anyone have the C reference code of the ITU G.711 Appendix II ? -- Guilherme Loch G?es "Wave after wave will flow with the tide And bury the world as it does Tide after tide will flow and recede Leaving life to go on as it was..." - Neil Peart , Natural Science

Hi, Two questions: 1 - Say I have average speed and directions for tide and I would like to plot them on a polar plot, but with different colors so I can indicate the two directions. I'm using polar.plot from the plotrix library. How can I add a second "b" and "dir.b" series to a polar.plot? library(plotrix) a = 3 dir.a = 85 b = 4 dir.b = 250 p...

...which is usually little-endian. The Macintosh is now little-endian. Obviously the PC is little-endian. Clearly there is a winner. It's long past time to stop putting the bytes in an order that makes both programmers and computers do extra work for no good reason. Don't try to hold back the tide." Thoughts? It's being hard to reach a consensus considering the little amount of people interested in OggPCM while also actively looking into the latest developments in the wiki, and since there are more eyes here I rather move the dicussion to the list. -Ivo P.S: Actually I never und...

To stem the tide of support requests from people who don't read the INSTALL file when installing OpenSSH and then complain about password auth failing. I am considering the idea of automagically installing a PAM file into /etc/pam.d if it exists, PAM support is enabled and no such file already exists. I have...

...s of searching, I found that other people have discussed this functionality in the past, but it does not appear to have yet been developed. One programmer, Luke Miller, has managed a work-around by downloading ascii data from an OPeNDAP site ( http://lukemiller.org/index.php/2011/02/accessing-noaa-tide-data-with-r/), but direct access to the netcdf files would reduce data download requirements greatly. I'm sure this must be a common requirement, particularly among earth scientists - perhaps they are all still using Matlab. Does anyone have have a solution? Or maybe I am just not proficient...

We're being ping-flooded by the Nachi worm, which probes subnets for systems to attack by sending 92-byte ping packets. Unfortunately, IPFW doesn't seem to have the ability to filter packets by length. Assuming that I stick with IPFW, what's the best way to stem the tide? --Brett Glass

The Register is carrying a article written by Kevin Poulsen of Securtiy Focus, calling asterisk "..the most powerful tool for manipulating and accessing CPN data.." > http://www.theregister.co.uk/2004/07/07/hackers_gut_voip/ I hope NuFone doesn't drop asterisk-set-able callerid's after this article; i've been wanting that feature from voicepluse for a long time.

...tried the function text and legend but was unsuccessful. Please see below. Your help would be appreciated. Thanks in advance. Jean library(car) > SPHSHTL <- scatterplot(HSuccess ~ HTL, + data = data.to.analyze, + xlab = "Distance to high tide line (metres)", + ylab = "Hatching success (%)") > legend("topright", bty="n", legend=paste("R2 is", + format(summary(SPHSHTL)$adj.r.squared, digits=4))) Error in summary(SPHSHTL)$adj.r....