search for: naumov

...ach page. Is there a way to test a graphic device to see if a new page is started (so that I know when to write the header)? I could simply count the plots made (each page has the same number of plots), but wanted to see if a more general solution is available. Thank you, Aleksey -- Aleksey Naumov GIS Analyst Center for Health and Social Research Buffalo State College

...#39;B'))) legend(1, 0.5, bquote(sigma[.(i)])) however, this gives me just one of the two entries in the legend. I cannot figure out how to include both sigmas in the legend. What would be the best way to do something like this? Thank you for your ideas or suggestions. Aleksey -- Aleksey Naumov Department of Geography SUNY-Buffalo

Hi R experts, I am looking for a simple error handling approach, whereby I could stop function execution with a customized error message. For example: for (i in 1:10) { if (i == 5) # I'd like to be able to stop right here with an error message I have complete control over } The problem with stop() is that I cannot control completely what gets printed to the terminal, even with

Dear R users, I am just starting with R (v. 1.0.0) and I use Vehables & Ripley's MASS book for examples. In the intro session, there is an example of a 2D histogram on an 8x8 grid: x <- rnorm(1000) y <- rnorm(1000) contour(hist2d(x,y,,,8,8)) R complains: Error in contour(hist2d(x, y, , , 8, 8)) : couldn't find function "hist2d" I looked for hist2d() in the

...uot;, from which I conclude that weights are not supplied as I intend, instead each subset of Sub, when passed to weighted.mean(), receives the whole x$Length as weights, which is not correct. Is there an elegant way to do this, or do I have to have a loop here? Thank you, Aleksey -- Aleksey Naumov GIS Analyst Center for Health and Social Research Buffalo State College

Dear R experts, Can anyone running R on Linux share how they use the "Search Engine & Keywords" page of R documentation? I cannot do any javascript on this page, either searching for a term or following the keyword links. I tried Konqueror (3.0.4, with javascript globally enabled), Mozilla (1.1), and Galeon (1.2.5), but none of them do anything... Sorry, I don't know

Dear R users, I have two related questions about scoping and data encapsulation. One is fairly specific - I am looking at "scoping.R" which is used in demo(scoping) - it's an example of lexical scoping and encapsulation. Where is the 'total' stored? It is not an attribute in 'ross' or 'robert' however, functions like balance() have access to it. Is it more

Dear R users, I have a very simple question. What is the easiest way to recode data in one of the columns of a data frame and put it into a new column? For example, here is a simple data frame: var1 1 1 2 2 3 3 How do I add a new column to data - 'var2' in which I group values in 'var1', for example: var1 var2 1 1 4 2 2 4 3 3 5 It's got to

...eryone but mostly one would need to read either intreger or float numbers out of Modbus registers in order to decide whether or not to start or stop the shutdown process. 24 ???? 2017 ?. 19:25:14 GMT+03:00, Charles Lepple <clepple at gmail.com> ?????: >On Jun 24, 2017, at 10:57 AM, Sergei Naumov wrote: > >> I was wonering if there is a driver that supports communicating with >a Modbus aware device over IP. I have a solar/wind invertor that can >broadcast its state and I would like to monitor the batteries. If they >discarge to a certain voltage or come to a defined state,...

Hi! I was wonering if there is a driver that supports communicating with a Modbus aware device over IP. I have a solar/wind invertor that can broadcast its state and I would like to monitor the batteries. If they discarge to a certain voltage or come to a defined state, I would perform a shutdown. All of this information id provided in Modbus holding registers. This could of course be done

Dear R users, I wonder if there is a simple way to select a random and non-overlapping subset of a vector? Say, I need to randomly select 10 out of 100 numbers in a vector V. By "non-overlapping" I mean that a number in any position in V (V[1]...V[100]) should be selected at most once (i.e. selection without recycling). I could simplu use a uniform distribution to generate selection

Dear R users, I have to catch a nasty bug and would appreciate any advice or help! I get a segfault (core dumped) that happens in one of my own functions. The problem is, it does not happen most of the time, only sometimes, so it's very hard to reproduce. Or it may run ok in interactive mode, but bug out in batch mode. Also, it tends to happen more on the slower of my 2 machines (PII 266),

Dear R and Sweave users, Is there a way to have optional sections in a Sweave-generated report document, complete with section header(s), text and code chunks? In other words, I'd like for my report to include or omit certain sections based on the data itself. For example, If I examine the input dataset early on in the report and set a variable has_daily_data = TRUE, then I'd like to

On Jun 24, 2017, at 10:57 AM, Sergei Naumov wrote: > I was wonering if there is a driver that supports communicating with a Modbus aware device over IP. I have a solar/wind invertor that can broadcast its state and I would like to monitor the batteries. If they discarge to a certain voltage or come to a defined state, I would perform a s...

Hi R users, dev2bitmap() is not working for me in R-1.1.0. It says: > dev2bitmap("aaa.png") Error in device(...) : Object "width" not found Anyone else has this problem? Aleksey -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info",

I'm looking for a plugin for Kate (or any other good text editor for linux) (KDE 3.x) which will highlight the R syntax. The link on www.r-project.org is dead! Any ideas?? Thanks Lars

Dear R and odfWeave users, I am looking for a way to automate generation of many reports using odfWeave. All reports would use the same input ODT file, the only difference would be in the name of the dataset which will be analyzed in any particular report. Right now, the name of the dataset is hardcoded in the first code chuck in the input file: <<01 get data, echo=TRUE>> station =

Dear R users, I am wondering how I could put a legend outside of the plot region of the corresponding plot (so that it does not interfere with data points). It seems legends are positioned in user coordinates which are set up by the last high-level plot command. Not only is it inconvenient, but also a legend can''t be plotted outside of plot region... Do I have to set up a dedicated

Dear R Users, I have a basis question regarding the use of color in the lattice package. I read the ?barchart help page and searched the R archives but could not understand how to do it. I just need to plot a barchart using specific colors for my groups, e.g. green and red instead of the default lattice colors. How do I do that? If I say: barchart(x ~ a_factor, groups=my_groups,

Dear R and odfWeave users, I am trying to figure out how to control table width and alignment on the page for a table generated by odfTable. Based on reading odfWeave documentation (including formattingOut.odt), here is how I manipulate the styles: st = getStyleDefs() # modify the table style tab = getStyles()$table st[[tab]]$align = "center" # seems to have no effect