similar to: import DTM with readRAST6()

Hi if I try to import a raster layer which consists only of NULL values from grass by using the readRAST6, I get an error message: > readRAST6("HSericea_seedsDisperse_2007") ERROR: Invalid value for null (integers only) Error in readBinGrid(rtmpfl11, colname = vname[i], proj4string = p4, integer = to_int) : no such file:

Hello all, I'm having troubles getting R to load data from GRASS 7. I suspect I have installed something wrong, but can't figure out what. Any suggestions for what I could look for or how to trouble shoot this? Thanks in advance for any help! After having other issues last week, we have upgraded Debian to the testing version. The other problems are solved, but now I can't get

Dear Spencer and Prof. Fox, Thank you for your replies. I'll very appreciate, if you have any ideas concerning the problem described below. First, I'd like to describe the model in brief. In general I consider a model with three equations. First one is for annual GRP growth - in general it looks like: 1) GRP growth per capita = G(investment, migration, initial GRP per

Dear all, I am aiming to calculate variograms using variogram() from gstat. The problem is that some of my data-sets are very large (> 400000 points). Running the command takes some hours of time and does not give any error-message. Nevertheless the result seem not to be appropriate - the first few bins are ok (up to a distance of about 300) but then it gains lags which are much larger than

Dear Rusers, I am trying to feed my database with data from a file. But since my file (2010101000.txt) there`s no headers I am facing problem because the result data.frame is not separated my columns. How could I set variables names for each columns in *dbWriteTable*? I have tried the command below but I don`t know how to fill the *field.type*option. dbWriteTable(con, "b20101010",

Dear all, I have some additionale question concerning the spgrass6 package. * When you set a region in GRASS, does the readGRASS6 function in R only load data contained in the zoomed region or the whole map ? * When you have a MASK map in grass, does the readGRASS6 function in R only load data contained inside the MASK area ? Could this be the problem ? Thanks, Jessica

Dear R-users, I would like to know how could I read a file with different lines lengths. I need read this file and create an output to feed my database. So after reading I'll need create an output like this "INSERT INTO TEMP (DATA,STATION,VAR1,VAR2) VALUES (20100910,837460, 39,390)" I mean, each line should be read. But I don`t how to do this when these lines have different

Xen-system AMD x64 2GB Memory installed with Domain 0 Linux Fedora 7 + Xen 3.1 + 2.6.18-xen i386 Domain 0 Linux Fedora 7 + Xen 3.1 + 2.6.18-xen x64 HVM - Vista 32 Ultimate + xenbus Vista 64 Ultimate + xenbus The DTM studio/controller was based on microsoft WLK 1.0c + update fileter patch (MS logo kit filter update every day) for more detail please

If you consider the definition of a DTM, and that findAssoc() computes associations between words as correlations across documents(!), you will realize that you can't what you want from a single document. Indeed, what kind of an "association" would you even be looking for? B. > On Nov 15, 2017, at 12:40 AM, Rahul singh <rahulutube69 at gmail.com> wrote: > > I have

I have free text data in a single text document. I create a corpus, and then a document term matrix out of it. I can create a word cloud too. But when I do word association for the same, using "findAssocs(), it always returns numeric(0). EX : findAssocs(dtm, "king" ,000000000000000000000.1) I read on stack overflow that it is because I have a single document. What is the

Hi, Does anyone use spgrass6 with GRASS 7 and R? The documentation for spgrass6 states it is for GRASS6+, and if I recall correctly I saw Dr. Bivand mention that it works well with GRASS7. (There were some threads from 2009 where spgrass6 wasn't working with GRASS7 yet, but I assumed that information was out of date.) So I figured I was doing something wrong with the library and package

In general, statistical methodology queries, which seems to be your concern, are offtopic here.This list is about R programming. Consider stats.stackexchange.com for statistical queries. However, the CRAN task view on natural language processing might be useful, so you may wish to check it: https://cran.r-project.org/web/views/NaturalLanguageProcessing.html Cheers, Bert Bert Gunter

Hi, I just imported two raster maps into R using the SPGRASS6 package, one containing elevation data and the other containing an erosion index: Kar_inc <-readRAST6("Incis_Kar", plugin=FALSE) Kar_dem <- readRAST6("DEM_Kar", plugin=FALSE) I just wanted to make a xy plot of erosion parameter vs elevation. How does this work? I don't get how to handle

Dear R Community- I am a new user of R. I am using R with GRASS GIS. I would apply svm "on" raster data in GRASS. Basically I have a raster with "areas training" and other three raster (each represents a band of ASTER satellite image). My goal is to classify, according to training areas, the 3 raster. Trying to replicate the guides found on the net, I did the following: #

Hello Experts, I'm new with R and having troubles doing my graduation project.I have 20 subfolders including almost 20000 txt files.What i need to do is to create a dtm and add a column to it showing a "class" information of the txt files. My directory source is like "C:\\R\\20news-18828\\comp.graphics" for the comp.graphic subfolder.I need to take only

Hi Boris, In that case, if I have lot of free text data (let us assume part of an Election speech) in one single TEXT document, and i want to find the association of the top 3 most frequently occurring words with the other words in the speech, what method do I adopt ? On Wed, Nov 15, 2017 at 7:08 PM, Boris Steipe <boris.steipe at utoronto.ca> wrote: > If you consider the definition of

Hola queridos usuarios de R-HELP-ES Primero que nada, muchas gracias a todo aquellos que me prestaron ayuda en mi anterior pregunta, fue de gran utilidad. A lo siguiente, tengo ahora otras preguntas, que bajo mis conocimientos las considero complejas, espero que me puedan ayudar, se los agradezco de antemano. Necesito realizar las siguientes operaciones (#Operación general) a un conjunto de 18

Hi all, I'm struggling with nls. How do you know if your model is significant? For a lm, you get a p-value, but you don't get it for a nls. Is there a way to calculate it? For a lm I use this: a<-summary(lm(model ~obs)) f.stat<-a$fstatistic p.value<-1-pf(f.stat["value"],f.stat["numdf"],f.stat["dendf"]) Is there something similar for a nls?

I have been looking for a while to LLVM as a possible technology to build a DSP execution engine, providing the runtime flexibility needed by real-time interactive DSP applications (like patcher languages), or by plug-in based processors, and in the same moment the powerful link time optimizations that such a system can provide. Such a task is daunting for a single developer project like

Dear users, I got this problem and i don't have a clue of what it could be happening... The context: i'm running a loop in which i extract information from a raster map (I work with GRASS and R, using spgrass6 package), and rearrange it to create a matrix. I've tried it with small maps and it works smoothly, but in large maps I have to resort to saving data in the hard disk regularly