similar to: GRASS raster data processing

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:

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

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

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

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

Hello everybody, I am a new R & Grass user. I am interested in doing a kriging of the Temperature in a basin, based on pixel elevation (DTM). I use Grass 6.2.1 and R 2.5.1 and have installed the spgrass6 package. The DTM is called "DTM_trentino_100m" and is like this: north:5158000.0 south:5058500.0 east:1729700.0 west:1611600.0 rows:995 cols:1181 -9999.0 -9999.0 -9999.0

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

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! I need a function to compute the erosion of a binary image by a structuring element. I need the structuring element to be a ball of a given radius. As far as I know the libraries adehabitat and spatstat include functions of mathematical morphology but I couldn't find a function which computes the erosion by a ball. Any idea? Thanks!

Dear R-users, I've been reading a bunch of things on linear models but cannot quite find a clear answer. How can one determine whether a linear model is significant or not? For background info, I am modelling the response of topographic slope to the distance of a catchment's outlet. Some guys have shown that if there is a significant fit to a linear model, one can deduce the dynamic

Hi, I've been following the changes in LLD's software architecture. Recently a new file was added: Alias.h In this file, the curret Atom set is extended with an AliasAtom. While the change seems innocent enough, it has some nasty potential. Simple.h and Alias.h are placed in the ReaderWriter component. This is the 2nd component in the layering: Driver ReaderWriter Passes Core The problem

The inverted dependency of Core to ReaderWriter via Simple.h was already present. My idea was to fix the problem before it gets bigger. My proposal would be to move Simple.h and Alias.h to Core. Similar to UndefinedAtom.h etc. It would be even nicer to make the naming consistent as well, since there already is UndefinedAtom.h SharedLibaryAtom.h etc Maybe: SimpleAtom.h AliasAtom.h Moving the file

On Mon, Jun 2, 2014 at 12:49 AM, Rui Ueyama <ruiu at google.com> wrote: > I agree to move these files to Core. Any objections? None here. - Michael Spencer > > On Mon, Jun 2, 2014 at 12:44 AM, Bas van den Berg > <b.van.den.berg.nl at gmail.com> wrote: >> >> The inverted dependency of Core to ReaderWriter via Simple.h was already >> present. >> My

On Mon, Jun 22, 2020 at 4:02 PM John Hubbard <jhubbard at nvidia.com> wrote: > > On 2020-06-22 15:33, Yang Shi wrote: > > On Mon, Jun 22, 2020 at 3:30 PM Yang Shi <shy828301 at gmail.com> wrote: > >> On Mon, Jun 22, 2020 at 2:53 PM Zi Yan <ziy at nvidia.com> wrote: > >>> On 22 Jun 2020, at 17:31, Ralph Campbell wrote: > >>>> On

>From the following: basin.map <- readAsciiGrid("c:/temp/area.asc", colname="area") I have a SpatialGridDataFrame which has the x and y cordinate of a cell, and the drainage area of that cell. There are many cells with a low drainage area (in my case, 33000 with an area of 37.16) and one cell with the highest drainage area (again, in my case, a drainage area of of

On 2020-06-22 15:33, Yang Shi wrote: > On Mon, Jun 22, 2020 at 3:30 PM Yang Shi <shy828301 at gmail.com> wrote: >> On Mon, Jun 22, 2020 at 2:53 PM Zi Yan <ziy at nvidia.com> wrote: >>> On 22 Jun 2020, at 17:31, Ralph Campbell wrote: >>>> On 6/22/20 1:10 PM, Zi Yan wrote: >>>>> On 22 Jun 2020, at 15:36, Ralph Campbell wrote:

Dear R users, I wish to run spatial point pattern analysis (e.g. pair correlation function, mark correlation function) for which I need to create an observation window (window=owin) from which the spatial analysis is generated. The command I used to create this observation window as follows: X1<- ppp(x, y, window=owin(c(80.58,144.96),c(101.06,165.13)),

On Mon, Jun 22, 2020 at 3:30 PM Yang Shi <shy828301 at gmail.com> wrote: > > On Mon, Jun 22, 2020 at 2:53 PM Zi Yan <ziy at nvidia.com> wrote: > > > > On 22 Jun 2020, at 17:31, Ralph Campbell wrote: > > > > > On 6/22/20 1:10 PM, Zi Yan wrote: > > >> On 22 Jun 2020, at 15:36, Ralph Campbell wrote: > > >> > > >>> On

On 6/22/20 4:54 PM, Yang Shi wrote: > On Mon, Jun 22, 2020 at 4:02 PM John Hubbard <jhubbard at nvidia.com> wrote: >> >> On 2020-06-22 15:33, Yang Shi wrote: >>> On Mon, Jun 22, 2020 at 3:30 PM Yang Shi <shy828301 at gmail.com> wrote: >>>> On Mon, Jun 22, 2020 at 2:53 PM Zi Yan <ziy at nvidia.com> wrote: >>>>> On 22 Jun 2020, at

Good day, all, I'm trying to transfer a 174M file to a system with 1.2G free. Other files in the tree come over just fine, but this transfer dies partway through: rsync -avvz -e ssh --partial --progress server.with.the.file:/server/directory /local/directory opening connection using ssh server.with.the.file rsync --server --sender -vvlogDtprz --partial . /local/directory receiving file