similar to: Pros and Cons of R :GUI

Hi, I am doing a very informal presentation for my office about R capabilities to deal with and analyze spatial data, display data and maps, and connections with GIS. I've used in my presentation info from the CRAN, the spatial Task view, and the more striking graphics examples from http://addictedtor.free.fr/graphiques/thumbs.php and NCEAS

Some tutorials and examples may help. http://www.zoology.ubc.ca/~kgilbert/mysite/Miscellaneous_files/R_MakingMaps.pdf http://coulmont.com/cartes/rcarto.pdf https://pakillo.github.io/R-GIS-tutorial/ http://www.milanor.net/blog/maps-in-r-plotting-data-points-on-a-map/ https://www.youtube.com/watch?v=PTti7OMbURo https://www.nceas.ucsb.edu/scicomp/usecases/CreateMapsWithRGraphics -- Best, GG

Hi , I am writing a function in C and i wish to call it from R. Thanks to this tutorial , this is easily possible - http://www.nceas.ucsb.edu/scicomp/usecases/CreateRPackageWithC Now , i have a server written in R which listens on a port for requests and process the requests. Now what i need is to load a large amount of data in startup of the server. And later this data should be available to

Hi, First of all thanks for all the answers .... all were very informative and helped me shape a better presentation. Although i received lots of emails saying that installation under Linux / Unix is easy .... still emails asking for help in installing R itself, or external packages and such crop more often than not on the list and for this reason i pressumed it is harder to install under Linux

Hello: I would like to superimpose vector polygons (state outlines) from a Shape file on top of a satellite image, imported into a SpatialGridDataFrame from GEOTIFF via gdal_translate and readGDAL. When I plot polygon and point shape files in R, into SpatialPointDataFrame and SpatialPolygonDataFrame, the two feature sets line up geographically, so it seems logical that a SpatialGridDataFrame

Dear R-Help list: I'm using the Matrix library to operate on 600 X ~5000 element unsymmetrical sparse arrays. So far, so good, but if I find I need more speed or functionality, how hard would it be to utilize other sparse matrix toolsets from within R, say MUMPS, PARDISO or UMFPACK, that do not have explicit R interfaces? More information on these is available here

Hello R-users, during one of my analyses that involve a SVD, I get the following error message: Error in La.svd(x, nu, nv, method) : error code 1 from Lapack routine dgesdd With a search on the R web site, I only found references to error codes 17 and 3 for this particular routine. I also found the Lapack web site, but could not find a list of the possible error messages. If somebody knows what

A preliminary release of my postgres package for R is at http://www.nceas.ucsb.edu/~keitt/R/postgres.tgz It allows one to read and write data frames to and from a postgres database, execute queries and has an experimental "proxy" interface that allows you to access postgres tables using the standard, local data frame model. All accesses to the data frame generate the appropriate

A preliminary release of my postgres package for R is at http://www.nceas.ucsb.edu/~keitt/R/postgres.tgz It allows one to read and write data frames to and from a postgres database, execute queries and has an experimental "proxy" interface that allows you to access postgres tables using the standard, local data frame model. All accesses to the data frame generate the appropriate

Greetings: When using R within GRASS6, and loading the rgdal library, I encounter an error loading a specific version of the HDF5 library that does not occur when I perform the same operation in R 'outside' of GRASS6: Here is a record of the error on my ubuntu system: ---------- Start --------- reeves at wallace:~$ grass2 Cleaning up temporary files..... Starting GRASS ... Welcome to

Greetings: We are evaluating the performance of R matrix algebra es as we port a MATLAB R14 script into R. The MATLAB code basically evaluates the AX=B system on sparse matrices that result in output matrices of 100 to 1,000,000 rows/columns. Our R prototype script uses spase base matrices and the methods qr() and qr.coeff(). The following statements are called inside a doubly-nested loop: G

I wanted to share an article I recently wrote on my blog with all of you regarding using SQLite for your web-applications. The blog url is: http://rubyonrailsblog.com and the article is currently posted on the front-page. Your insights and feedback are appreciated and are always welcome. Also if you have a blog, please let me know and feel free to put a link to my blog up on your site. If you do,

I wanted to share an article I recently wrote on my blog with all of you regarding using SQLite for your web-applications. The blog url is: http://rubyonrailsblog.com and the article is currently posted on the front-page. The exact url is located at: http://rubyonrailsblog.com/articles/2006/04/13/consider-sqlite-for-your-web-applications-the-pros-cons-and-when-to-use-it Your insights and feedback

Relative newbie so would welcome comments re structure of a self-referential relationship I''ve got. It''s started off similar to the Person HABTM friends in the Rails recipes books (working fine), but I needed to turn the join table into a full-blown model as I wanted to add attributes to it. Few tricky bits dealing with the new :through structure and understanding how :scope

I have a basic question, being new to EXT3. What are the pros and cons of using an external journal? Also, for a Terabyte-sized system, what should I use as the external journal's size? is there a general rule-of-thumb to follow when choosing the external journal's size? I know these are very basic questions, if they have been already answered in some FAQ, please let me know. Any

I've read that certain operations performed on a matrix (e.g. ribind, cbind) are often much faster compared to operations performed on a data frame. Other then the "bind functions", what are the main operations that are significantly faster on a a matrix? I know that data frames allow for columnnames and rownames, and that each column in a data frame can have different data types.

I have Samba running without a PDC and I have some questions about the advantages for implementing one with Samba vs. the problems and disadvantages. Perhaps some kind souls can help me determine whether I should do this or not. We have three offices connected by a Checkpoint VPN, plus people "on the road" using their SecureClient tool. We want everyone to be able to get to all the

Hello, I am very interested in "banking to 45 degrees" as defined by William S. Cleveland in "Visualizing Data." I like to do it in R as well as Excel, etc. With R I have come across the following method: xyplot(x, y, aspect="xy") (part of "lattice" package) which will bank my graph to 45 degrees. My question is how do I obtain the aspect ratio

I am the maintainer of its, but not it's original author. One of the main strengths of its is that it uses POSIXct dates. Zoo has the flexibility of using almost any date format, but I don't know if the other date formats can store hour, min, sec data. You might want to do a little exploring with each before you commit. I'll be happy to give you a hand if you decide to work with

I have some questions about whether I should set up folders under INBOX vs. having them outside the INBOX namespace. I'm setting up a new Dovecot 2.2.0 on an Ubuntu 12.04.2 server. My plan is to move my users (family members) to this new server from an old Cyrus server. Everybody is currently using (and will continue to use) IMAP, and either Thunderbird or SquirrelMail as their e-mail