search for: silt

...(sp) # Dummy ternary data to be plotted & classified as in or out a polygon # All should be on the border test.bug <- data.frame( # 1 2 3 4 5 6 7 8 "CLAY" = c(10.50, 11.05, 20.91, 20.95, 20.00, 00.00, 01.96, 01.24), "SILT" = c(00.00, 00.00, 79.09, 79.05, 80.00, 02.00, 00.00, 00.00), "SAND" = c(89.50, 88.95, 00.00, 00.00, 00.00, 98.00, 98.04, 98.76) ) # # ACoordinates of the polygon my.pol <- data.frame( "x" = c(0,0,100), "y" = c(0,100,0) ) # Set up plot scene plot( x = m...

o <- (structure(list(sand.silt = structure(list(statistic = structure(185, .Names = "W"), parameter = NULL, p.value = 0.0478835773838087, null.value = structure(0, .Names = "location shift"), alternative = "two.sided", method = "Wilcoxon rank sum test with continuity correction",...

...ear R users, If I manage to sort out this graph, it is certainly a candidate for the new R graph gallery (http://addictedtor.free.fr/graphiques/displayGallery.php)! I created the following lattice graph: library(lattice) tmp <- expand.grid(geology = c("Sand","Clay","Silt","Rock"), species = c("ArisDiff","BracSera","CynDact","ElioMuti","EragCurS","EragPseu"), dist = seq(1,9,1) ) tmp$height <- rnorm(216) sps <- trellis.par.get("superpose.symbol") sps$pch <- 1:6 trelli...

Hi, I am trying to create a triangular plot to show the 'composition' of a set of items with three variables (historically the percent sand, silt and clay in soil). So far I have tried the 'soil texture triangle plot' in the package plotrix and the 'ternary or triangular plots' in the package cwhtool (cwhmisc). Both have strengths and weaknesses, but neither has a 'standard' or 'generic' feel about it....

...(c(0,8,20), c(12,12,0))) for(i in seq(10, 90, 10)) { lines(conv.ter(c(i,i), c(0,(100-i))), lty = 3) lines(conv.ter(c((100-i),0), c(i,i)), lty = 3) lines(conv.ter(c(i,0), c(0,i)), lty = 3) } text(conv.ter(c(50, 60, -10), c(-10, 55, 55) ), c("Sand", "Clay", "Silt"), cex = 0.9 ) text(conv.ter(c(0,20,40,60,80,100 ), c(rep(-2, 6)) ), c("0", "20", "40", "60", "80", "100"), cex = 0.75 ) text(conv.ter(c(103,83,63,43,23,3 ), c(0,20,40,60,80,100) ), c("0", "20", "40",...

I would like to preform a t.test to each of the measured variables (sand.silt etc.) with a mean and sd for each of the treatments (up or down), and out put this as a table.... I am having a hard time starting- maybe it is to close to lunch. Any suggestions would be greatly appreciated. Stephen Sefick x <- (structure(list(sample. = structure(c(1L, 7L, 8L, 9L, 10L, 11L,...

Dear R users, has anybody made an attempt to create the soil texture triangle graph in R? For an example see here: http://www.teachingkate.org/images/soiltria.gif I would like to get the lines in black and texture labels in gray to allow for plotting my texture results on top. Any examples or suggestions are very welcome! Thanks in advance, Sander. --

...end). One will notice I have plotted the points based on whether or not they are in a region called 'upstream' or 'downstream'. I'm curious if there is a way to somehow extract counts of the number of points (red points and blue points) falling within each classification (e.g. silty loam, sandy clay, etc.)? Eric soil.dat<-read.table(textConnection("Field_Num Region Region_Num Region_Sym Region_Col Date Location Location_Num sand silt clay 1 US 1 1 4 6/3/1999 Surface 1 26.25 52.5 21.25 1 US 1 1 4 8/8/2000 Surface 1 27.5 52.5 20 1 US 1 1 4 8/8/2000 One_Foot 2 27.5 50...

...erested in ggplot2 and I found this lattice code very interesting (http://addictedtor.free.fr/graphiques/graphcode.php?graph=48). Code: library(lattice) lattice.options(default.theme = canonical.theme(color = FALSE)) tmp <- expand.grid(geology = c("Sand","Clay","Silt","Rock"), species = c("ArisDiff", "BracSera", "CynDact", "ElioMuti", "EragCurS", "EragPseu"), dist = seq(1,9,1) ) tmp$height <- rnorm(216) sp <- list(su...

...interference with any black and white shading. The plotMeans function provides a useful option error.bars ("se", "sd", "conf.int", "none"). The following test data is still useful: tmp <- expand.grid(geology = c("Sand","Clay","Silt","Rock"), species = c("ArisDiff","BracSera","CynDact","ElioMuti","EragCurS","EragPseu"), dist = seq(1,9,1) ) tmp$height <- rnorm(216) For instance plotting height versus dist by geology. Any help very welcome! C...

...NA 281 281 NA WTD 391 315 0.194 281 210 0.253 ECgw 391 362 0.074 281 280 0.004 SM 391 349 0.107 281 280 0.004 WTD_ECgw 391 300 0.233 281 209 0.256 WTD_SM 391 286 0.269 281 210 0.253 ECgw_SM 391 318 0.187 281 280 0.004 WTD_ECgw_SM 391 269 0.312 281 210 0.253 Sand 391 359 0.082 281 279 0.007 Silt 391 369 0.056 281 280 0.001 Clay 391 370 0.054 281 269 0.043 WTD_ECgw_SM_Sand 391 263 0.327 281 181 0.356 qr 391 360 0.079 281 270 0.038 Ks 391 370 0.054 281 276 0.017 qr_Ks 391 358 0.084 281 271 0.035 WTD_ECgw_SM_qr 391 261 0.332 281 188 0.331 WTD_ECgw_SM_Ks 391 260 0.335 281 205 0.270&quot...

..._default Printer hplj1200 Printer mx4d4 Printer mx4d1 Printer root Disk Home Directories on zeus Server Comment --------- ------- LITHOS SILT SPINELL ZEUS Samba Server 2.2.2 on zeus Workgroup Master --------- ------- PET.UNIVIE PW2400 PETROLOGY ZEUS root@zeus: nmblookup -T petrology INFO: De...

Dear R users I'd like to know if it is possible to create conditional plots in the soiltexture package. I have data from the particle size distribution of soils derived from two parent materials and I want to use the parent material as conditioner. Thanks a lot. Alessandro Samuel-Rosa Post-Graduation Program in Soil Science Federal University of Santa Maria Av. Roraima, n? 1000, CEP