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...t I am not convinced this is the best/simplest way to proceed. I am hoping to add this sort of analysis to some of the other ways were are able to characterized background and compare them all. This is for the evaluation of chemicals in the environment. Michael J. Bock, PhD | Manager ENVIRON | www.environcorp.com <http://www.environcorp.com/> 136 Commercial Street, Suite 402 Portland, ME 04101 V: 207.347.4413 x223| F: 207.347.4384 |mbock@environcorp.com This message contains information that may be confidenti...{{dropped:11}}

I am trying to create some plots of concentration versus depth. I want Depth on the Y axis and the concentrations on the X axis. I also need to plot error bars. The xYplot function in Hmisc is very nearly ideal but I have to put depth on the x-axis to get it to work. When I transpose the X and Y axes in the xYplot command, the error bars disappear (no surprise given the help file). It there a

I am looking to create what I would call a "simple variation" on the boxplot. What I would like to do is to be able to plot the upper and lower confidence limits as the "box" and the 10th and 90th percentile as the whiskers. What I have done is write the code to create a dataframe, the columns of which are the mean, sd, 10th percentile, 90th percentile, lower confidence limit

I have been using the ECDF function in the Hmisc package to produce cumulative distribution function plots. The problem is that for small datasets the steps "look bad" (not my characterization but from the client). Is there a way to get the same information but smoothed? I have tried the densityplot (lattice), which gives a smoothed line, but this does not give the cumulative density.

I am using R for environmental forensics (determination of the sources and/or groupings in mixtures of organic chemicals in the field). The goal is to determine in there are groups of samples with similar/dissimilar compositions, and to assign samples to a potential source or a mixture of sources based on the composition (unmixing and source allocation). Typically there are 10 to 50 chemicals that

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Greetings, I am running a buch of wilcox tests and need to be able to rapidly export the results into a csv file. I have attached example code as well as my attempts to get what I need. I have tried unlist,cbind,rbind etc but I am obvously missing something simple. FYI I am actually running about 50 WRS tests per dataset, this is just an example. Thanks 10^6 Mike AKCCR <-

I have written a few different summary functions. I want to calculate the statistics by groups and I am having trouble getting the output as a dataframe. I have attached one example with a small dataset that calculates summary stats and percentiles, I have others that calculate upper confidence limits etc. I would like the output to be converted to a dataframe with one of the columns as the

I noticed the See Also section of the help page for winDialog refers to a "package windlgs in the package source distribution..." but I can't seem to find any documentation on this. Does anyone know if it exists or where to find out more about it? Any information would be helpful, thanks. -------------------------------------------- Till E. Stoeckenius, Senior Consultant ENVIRON