[R] Issue with var command in stats package

2016-03-27 Thread John, Larry
Am using R version 3.2.4 in a fully updated version of Windows 7 and the most 
current versions of coorplot, FactoMineR and factoextra to support multiple 
correspondence analysis. However, today, a line of code that worked just fine 
on one set of data produced an error message on a different set of data.

Specifically, when I ran:

corrplot(var$contrib, is.corr = FALSE)

I received the following message:

> corrplot(var$contrib, is.corr = FALSE)
Error in var$contrib : object of type 'closure' is not subsettable

Can you please tell me what this error message means and roughly what I might 
need to do to correct it? If necessary, I can provide the original data files.

Many thanks for your kind help.

Very Respectfully,

Larry John
Principal Analyst
ANSER
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[R] Scripting Problem--Linear Regression Using Logit of the Response Variable

2016-01-08 Thread John, Larry
Dear fellow citizens of the R-verse,

I'm a non-quant analyst trying to do some statistical analyses on a large data 
set unimaginatively named "data."

  sympathy trust fear greed sharer_prob
[1]  3 20 00.669593
[2]  2 12 30.669593
[3]  2 22 30.494675
[4]  2 21 20.494675
[5[  2 22 00.556837
[6]  2 21 10.556837

"sharer_prob" is the continuous dependent variable with values 0 > sharer_prob 
> 1, so I know need to run a logit transformation before I can do any linear 
regressions to study the main and interaction effects of the four independent 
variables.

I've loaded "car" and tried for several hours to create a one-line script that 
will give me the overall linear model, but keep having problems. It seems to me 
that something like the following should work


> EvacLM <- lm((logit(sharer_prob) ~ sympathy + trust + fear + greed) 
> adjust=TRUE) na.action=NULL)

But R politely tells me I've gotten something wrong:


Error: unexpected symbol in "EvacLM <- lm((logit(sharer_prob) ~ sympathy + 
trust + fear + greed) adjust"

I'm hoping one of you can spot and help me correct my mistake-I sure can't 
figure it out.

Thanks for any help you can offer!

Larry John
Principal Analyst
ANSER (www.anser.org)

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