Displaying 3 results from an estimated 3 matches for "temp_mean".
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temp_max
2012 May 10
1
envfit output (vegan package) - not sure what it means
...indicates
that only a single variable (mean_temp) is significant:
***VECTORS
NMDS1 NMDS2 r2 Pr(>r)
precip 0.41539 -0.90964 0.2948 0.112887
wind -0.61937 0.78510 0.0441 0.763237
temp_mean 0.50571 -0.86270 0.5839 0.004995 **
pressure -0.66891 0.74334 0.0688 0.622378
---
Signif. codes: 0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1
P values based on 1000 permutations.
I understand that the length of the plotted arrows is proportional to th...
2010 Aug 17
2
Independent variables omitted in lm and glm
...ience.
Thank you.
Elaine
Code
rm(list=ls())
library(MuMIn)
datam <-read.csv("c:/migration/Mig_ratio_20100817.csv",header=T,
row.names=1)
dim(datam)
datam[1,]
# original regression model (16 indep. variables)
Mig.lm
<-lm(datam$SummerM_ratio~datam$temp_ran+datam$temp_mean+datam$temp_max+datam$temp_min+datam$evi_ran+datam$evi_mean+datam$evi_max+datam$evi_min+datam$prec_ran+datam$prec_mean+datam$prec_max+datam$prec_min+datam$topo_var+datam$topo_mean+datam$coast+datam$Iso_index_0808,data=datam)
summary(mig.lm)
mig.glm
<-glm(datam$SummerM_ratio~datam$temp_r...
2010 Jan 13
3
Operating on each row of data frame
...here are 4 columns .
Column 1 : name
Column 2-4 : values
I would like to calculate mean/Standard error of values in column 2-4 and
store them in column 5,6 respectively.
I have done the following but doesn't seem to work
mean_N_SE <-function(x)
{
name <- x[1]
vals <- c(x[2:4])
temp_mean <- mean(vals)
SE <- sqrt(var(x)/length(x))
}
apply(d,1,mean_N_SE) where d = data frame.
Can someone help me with this.
Thanks!
-Abhi
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