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Is there anyway to calculate population weighted centroids of a spatial polygon in R? Any idea will be appreciated. Thanks Zia -- --------------------- Zia Ahmed, PhD Research Associate Department of Crop and Soil Sciences 1002 Bradfield Hall, Cornell University Ithaca, NY 14853...

Dear list, I like to extract max. pixel value from a set geoTif raster image and create a new geoTIf image with these max values. Is it possible to do this with R "raster" package? Thanks Zia

Hello, ? I have two time series, and I want to obtain copula-GARCH. I know how to model the data with GARCH models but how to incorporate the GARCH model with copula is what I need. ? Can anyone give me...

Hi, I want to use R to extract L / S -estimators. Can anybody help me in locating the appropriate library or routine. Waiting for a response, Ahmed Siddiqi Department of Statistics, University of Michigan, afi at umich.edu -------------- next part...

Dear R users, How can I customize x axis in a boxplot? xaxt="n" to suppress x axis, but I would like to customize x axis for different groups. Thanks -- Ahmed M. Attia Research Assistant Dept. Of Soil&Crop Sciences...

Hi All, I noticed that all packages accepted in Bioc 3.9 have their Bioc_since (year-in-bioc) broken. Following the svg link indicates a code error. Here is an example from our package https://bioconductor.org/shields/years...

I have a question to everybody. After log10 transfprmation, I have done ordinary kriging in gstat in R? I need to back trnasform the prediction values to orgiginal scale. How do I do this in gstat in R? Thanks Zia...

Hi, I have several DEM sheets as geotiff format. I like to merge/mosaic them to create a grid file using a R-function. Help will be appreciated. Zia -------------- next part -------------- A non-text attachment was scrubbed... Name: zua3.vcf...

Dear R users, Can I add a text to a plot without x axis? I saw a function that enables placing the text with mouse text(location, "text to place", pos, ...) locator(1) but it did not work out. -- Ahmed...

Hello Experts, I need your help to understand the how can we calculate the UCL values at different levels dynamically? Customer No Month Sales UCL 100 201501 500 550.75 100 201502 100 550.75 101 201501 400 425.25...

Dear All, I'm a beginner user in R and I would like to make a quadratic and plateau model in R. Can you help please with an example? Thanks so much -- Ahmed M. Attia Assistant Lecturer El-Khattara farm...

Hi all, Is it possible in gstat to get misclassification of risks as hazardous (false positive) and safe (false negative) as describe by Goovaerts (1997) from parametric or non-parametric probability mapping?. help will appreciated. Thanks Zia -------------- next part -------------- A...

Hi, Is there a "R" function that uses the Gauss-Newton method to minimize a nonlinear regression model. I mean in the same manner as the "nlsfit" Splus function, where you can specify the model and the derivatives. regards ahmed...

Hi All,? I have a panel data and I am applying Propensity Score Matching on it. I have multiple treatments (4 treatments). I have estimated the model on the full sample using the CBPS Package. However, I want to perform...

I have two grid maps (100 m cell size). I want to a create another raster gird of correlation coefficient ( r value) of two maps using moving windows approach. Has someone any idea how to do it in R? Thanks...

I like to create a probability interval map of soil salinity (for example from 2 to 4 dS/cm) using IK or from ordinary kriging, How do I wrote the code in gstat? Help will be appreciated. Thanks Zia > -------------- next...

Hi all, Is it possible in gstat to get misclassification of risks as hazardous (false positive) and safe (false negative) as describe by Goovaerts (1997) from parametric or non-parametric probability mapping?. help will appreciated. Thanks Zia -------------- next part -------------- A...

I have a problem with the graphic functions in the ade4TKGUI graphic user interface in R. I want to reset the label size and boxes options, but get this error message Error in (function () : object 'pmvar' not found or this...

Hello All, I am running quantile regression for a complex survey design and am running the following code: newdf<-withReplicates(df, quote(coef(rq(api00~api99, tau=0.5, weights=.weights)))) This provides me with the theta and SE but...

Dear Bioc-devel communtiy, I was wondering if it would be possible to add Oryzias latipes (Medaka) to the list of genomes on BSgenome. I am trying to use motifbreakR to functionally annotate some non-coding SNPs we obtained and...