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4 results for “from:jatwood”

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jatwood · May 31, 2005 · r-help

Are there any R packages available that let me directly impose a set of linear parameter restrictions when estimating the simple linear and/or GLS regression model and directly recover the restricted coefficients, predicted values and residuals? Can I do...

different outcomes using read.table vs read.csv
jatwood · Mar 13, 2009 · r-help

Good Afternoon I have noticed results similar to the following several times as I have used R over the past several years. My .csv file has a header row and 3073 rows of data. > rskreg<-read.table('D:/data/riskregions...

identying shapefile polygons containing long-lat points
jatwood at montana.edu · Jul 22, 2008 · r-sig-geo

Good Afternoon I searched the archives but could not find the answer to my question. I have shapefiles for various geographic regions such as states, counties, zipcode areas, townships, etc. I also have long-lat coordinates for 12000 plus weather...

converting lat-long coordinates to Albers Conical Equal Area coordinates
jatwood · Feb 9, 2006 · r-help

#################################################################################### We have used maptools to construct state, county, township, census-tract, and zipcode level R maps with an Albers Conical Equal Area projection. We would like to be able to plot the location of weather stations or other point locations...

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