search for: arcgi

Dear members, How can I read and plot an ArcGIS raster file into R ? The file has extension .aux and contains floating point bathymetry data. The purpose is to create a spatial model in R that uses ArcGIS map data. I have managed to read and plot various shape files into my R project, but I am stuck with this now. I am new to this list and also...

Hi all, I am very knew to this R and Arcgis combination. I have already spent days attempting to find my answer but have failed, therefore could you please if possible explain any answers in simple form. I am trying to access Arcgis through R, following a few steps: 1) Set up working directory 2)connect to Python 3) import arcgis- however,...

Dear all, I have been trying to speed up a process we have been done in ArcGIS. We have to read a single layer TIFF (monochrome image) in . For this, I have used the "rtiff" package. After reading the TIFF file, I compared the raw values for each pixel that I have in ArcGIS to the ones obtained in R. In ArcGIS I have discrete values in the range 0..255, while in R...

Can anyone tell me why I would get different average nearest neighbor values for the same set of coordinates between ArcGIS 10 and R? Sometimes the difference in distance is over 1.3 km. Alexis -- View this message in context: http://r.789695.n4.nabble.com/nndist-R-vs-ArcGIS-tp3442375p3442375.html Sent from the R help mailing list archive at Nabble.com.

Hi everybody, I heard about "R(D)-COM Stat connector" for ArcGIS, but i am not sure what that is. I did a search in the archive but it seems i am not getting anything back. can anybody explain me what that is, and where i can find more info about it? There is any possibility to run R from inside ArcGIS? there is more than RArcInfo and...

Hello every body, i?m testing some w32 apps with wine and I found some problems. Trying to install ArcGIS (My first installation), I had the following error: Need internet explorer 6. Well I installed IE 6, and continue installing ArcGIS, it was installed succesfully, but it installed Phyton, and throw some problems. Well finally installed I run ArcGIS and the fonts were crazy, I didnt see anything. t...

...] tcltk     stats     graphics  grDevices utils     datasets  methods   base      other attached packages: [1] adehabitat_1.8.11 shapefiles_0.6    foreign_0.8-51    tkrplot_0.0-23    ade4_1.5-1        loaded via a namespace (and not attached): [1] tools_2.15.2 I am using Microsoft Excel 2010 and ArcGIS 10.1sp1 for Desktop Basically, no matter what data frame I am working on, when I export it to a text file to be use in Excel or ArcGIS problems arise.  Im not sure if it is R or these other programs, maybe forums for ArcGIS might be more appropriate, but this problem only occurs when I use tables...

Hi everyone, I wonder if anyone knows the reason why the outputs of the same reprojection in r and arcgis are different?. The magnitude of the change can be up to 40 km in the poles. Basically, I have a database of points equally separated by one degree over the globe. In ARCGIS, I am projecting the data in GCS-WGS-1984 and then reprojected it to Berhmann to ensure equal area distribution of th...

Hello: I am using R raster package to replace ArcGIS when processing multiple shp files. However, when I export R raster back to ArcGIS, it couldn't recognize R raster file correctly. For example, I used {raster} package and got a RasterLayer as followed. class : RasterLayer dimensions : 8280, 18480, 153014400 (nrow, ncol, ncell) reso...

On R 2.15.2 and ArcGIS 9.3.1, it works for me in ArcCatalog but you have to follow the particulars here: http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?TopicName=Accessing_delimited_text_file_data For example: write.table(test, '***.tab', sep = '\t', row.names = F) The extension .tab and sep = &...

Hi, I am trying to predict the habitat suitability of lobster with GAMs. I need to produce a map in ArcGis of the predicted densities. I did some search and the function predict.gam seems to do the job. Is this the right way to do it? when you apply the function you get the predicted values (different from your input data points) but I do not understand what is the procedure with the spatial coordinat...

I have a Samba 3.4.7 PDC set up (Ubuntu 10.10/OpenLDAP) and have configured a Windows 7 Pro 64 bit workstation as a domain member. Logins and shares work without a hitch. I'm running into a problem with ArcGIS 10 Server on Windows using domain accounts for the services. ArcGIS post-install fails because it won't take the username/password combination of the domain account. I initially thought this was an ArcGIS problem, but looking at the Samba logs, I find "check_ntlm_password: sam authentic...

...o extract the grid id and also the coordinates from a HIRHAM netcdf file. I know how to extract a slice of dataset both in space and in time and I also know the area that this file should cover, however I have no idea regarding the reference for both LAT/LON and RLAT/RLON. I tried already tried is ArcGIS to give the Lambert Conformal Conic projection as the spatial reference, by default arcgis gets the rlat and rlon for coordinates. however the resulting raster is displaced from were it should be. Can someone help me with this? Thanks A.R. [[alternative HTML version deleted]]

I am not sure a previous e-mail reached the list (no mail aknowledgement from R-boundle etc.). The question was how to write polygon or segment coordinates into a shapefile set or any other ArcGIS supported format. The library shapefiles seems to do something but the documentation is a bit beyond of my mind.... and I cannot get the meaning of the functions write**** and its application to the case below: In simple words, is there a somewhere a function taking polygon coordinates (or simple...

Hello, I have an ESRI ArGis geo database directory which I would like to convert to geojson or a shape file (or anything else that I can read into R). Unfortunately that does not work out of the box with rgdal, because it does not come with the fileGDB or openfileGDB driver. I could successfully install gdal and the fileGDB driver/extension, but it seems that i can use gdal only to convert the

Dear list, I have to compare two digital elevation models in raster format (geotiff). I then have to calculate the differences in altitude for each cell and make some statistics (basic as mean, median, std, range but also more "advanced" as RMSE) on that. I do not know very much how to proceed: 1) is it possible to import the geotiff in R? If so with which package? if not which is the

Dear all, I've been using R on a Mac to process some data for export to ArcMap GIS (which only runs on Windows). ArcMap seems to require tab-delimited data (my data are in 3 columns), so I've been using the sep="\t" argument. However, this resulted in strange end-of-line characters when displayed on a PC. I looked in the write.table help file to find that eol="\r\n"

...see them) > > write.csv(overlap.matrix, paste(out.dir, "all_species.csv",sep='')) > " Date: Fri, 17 Feb 2012 12:18:55 +0100 From: Roger.Bivand at nhh.no To: michael.denslow at gmail.com CC: r-sig-geo at r-project.org; skopp at esri.com Subject: Re: [R-sig-Geo] R / ArcGIS On Fri, 17 Feb 2012, Michael Denslow wrote: > On Fri, Feb 17, 2012 at 2:15 AM, Edzer Pebesma > <edzer.pebesma at uni-muenster.de> wrote: >> Hi, >> >> I might succeed meeting with some ESRI / ArcGIS folks at AAG next week; >> I'm in touch with them in part...

I am wondering if there is a function which will do a join between 2 data.frames by minimum distance, as it is done in ArcGIS for example. For people who are not familiar with ArcGIS here it is an explanation: Suppose you have a data.frame with x, y, coordinates called track, and a second data frame with different x, y coordinates and some other attributes called classif. The track data.frame has a different number of r...

...is my dataset: 1.ccc.shp (the original data) 2.ccc.gwt, which is computed by Geoda; Introduction to the variables in my data: ID: key variable; N_LATITUDE: latitude measured by GPS; E_LONGITUD: longitude measured by GPS; LIVES: attribute data I get the different result of Moran's between ARCGIS and Geoda, R, why? ARCGIS:spatial statistics tools:spatial autocorrelation(Moran's I)=0.0343 GeoDa:Moran's I=0.1539 R:Moran I statistic =0.153905049 The key arguments in R that i use: ccc<-read.gwt2nb("ccc.GWT",region.id=ID) ccc2<-nb2listw(ccc, glist=NULL, style="W&qu...