search for: hsuccess

Hi R-listers, I am trying to do an ANOVA for the following scatterplot and received the following error: library(car) scatterplot(HSuccess ~ Veg, data = data.to.analyze, xlab = "Vegetation border (m)", ylab = "Hatching success (%)") anova(HSuccess ~ Veg, data=data.to.analyze) Error in UseMethod("anova") : no applicable method for 'anova' applied to an obj...

Hi R-listers, I am trying to make a trellis boxplot with the HSuccess (y-axis) in each Rayos (beach sections) (x-axis), for each Aeventexhumed (A, B, C) - nesting event. I am not able to do so and keep receiving: Error in eval(expr, envir, enclos) : object 'Rayos' not found Please advise, Jean require(plyr) resp <- read.csv("ABC Arribada R...

Hi R-listers, I am wondering if the function aov() in plyr is appropriate for two different types of tests: 1) > summary(aov(EDI ~ VegIndex, data=data.to.analyze)) AND 2) > summary(aov(HSuccess ~ VegIndex + Aeventexhumed + VegIndex:Aeventexhumed, data=data.to.analyze)) the later inclusive of an interaction of the two explanatory variables. This is for obtaining P value and F statistics. Please advise, Jean -- View this message in context: http://r.789695.n4.nabble.com/aov-usage-tp4...

Hi R-listers, I am using the package plyr. I am just trying to get the hatching success mean of each nesting event and have typed in the following and received the below results: > tapply(HSuccess, Aeventexhumed, mean) A B C 0.2156265 0.1288559 NaN What can I do about NaN? I should be able to get a result for event C because I was able to make a boxplot graph with this information showing all three nesting events (A, B, and C). Please ad...

...ouble plotting the values for the R2 line, lowess smooth, smothered conditional spread, outlier identification. I have tried the function text and legend but was unsuccessful. Please see below. Your help would be appreciated. Thanks in advance. Jean library(car) > SPHSHTL <- scatterplot(HSuccess ~ HTL, + data = data.to.analyze, + xlab = "Distance to high tide line (metres)", + ylab = "Hatching success (%)") > legend("topright", bty="n", legend=paste("R2 is", +...

...angle sections? 2) Each Rayo is a little bit different in size but for management purposes, it is identified by these sections (leave alone or use), so maybe ANOVA is appropriate? 3) Script suggestions greatly appreciated. Please advise, Jean head() included below ---------------- summary(aov(HSuccess ~ HTLIndex*Aeventexhumed, data=data.to.analyze)) Df Sum Sq Mean Sq F value Pr(>F) HTLIndex 6 0.691 0.11524 3.023 0.00937 ** Aeventexhumed 2 0.106 0.05308 1.393 0.25329 HTLIndex:Aeventexhumed 11 0.376 0.03418 0.897 0.54645 Residu...

Hi R-listers, Q1) What is the difference between the scatterplot and plot function? Q2) I am able to make a graph with the scatterplot function: scatterplot(DevelopIndex ~ Veg, + data = Turtle, + xlab = "Vegetation border (m)", + ylab = "Embryonic development index") And have been successful. But I do not know if the lines are for: