X and y must have the same number of elements, and NA values must be removed (?na.omit)
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Sent from my phone. Please excuse my brevity.

Julie <julie.novakova@gmail.com> wrote:

Hello,
I am trying to get a linear model of y ~ log(x).
*> lm (y~log(x))*
However, I always get an error report:
/Error in model.frame.default(formula = y ~ log(x), drop.unused.levels =
TRUE) : 
variable lengths differ (found for 'log(x)')/

*Here was my y:*
> y
[1] 0.4500000 0.0500000 0.5000000 0.4000000 0.0000000 
0.5000000 0.4000000
[8] 0.0500000 0.4000000 0.2500000 0.3500000 0.5000000 
0.0500000 0.4000000
[15] 0.5000000 0.5000000 0.5000000 0.2500000 0.8500000 
0.5000000 0.5000000
[22] 0.5000000 0.2500000 0.4000000 0.2500000 0.2500000 
0.4000000 0.2500000
[29] 0.5000000 0.1500000 0.2500000 0.1000000 0.2500000 
0.2500000 0.0150000
[36] 0.4000000 0.5000000 0.2000000 0.2500000 0.0000500 
0.5000000 0.0050000
[43] 0.5000000 0.2500000 0.2500000 0.4000000 0.5000000 
0.4000000 0.5000000
[50] 0.5000000 0.5000000 0.5000000 0.7142857 0.5000000 
0.0050000 0.3500000
[57] 0.5000000 0.3500000 0.0000000 0.5000000 0.2500000 
0.2500000 1.0000000
[64] 0.2500000 0.1000000 0.2500000 0.5000000 0.2500000 
0.5500000 NA
[71] 0.2500000 0.4000000 0.3500000 0.3500000 0.2500000 
0.0000000 0.8888889
[78] 0.5000000 0.2500000 0.5000000 0.5000000 0.5000000 
0.2500000 0.2000000
[85] 0.4000000 0.0000000 0.3500000 0.0250000 0.4000000 
0.5000000 0.3500000
[92] 0.2500000 0.3000000 0.2500000 0.0050000 0.5000000 
0.4000000 0.0500000
[99] 0.5000000 0.4000000 0.0050000 0.4500000 0.4000000 
0.3500000 0.5000000
[106] 0.0050000 0.3000000 0.0500000 0.2500000 0.3500000 
0.3500000 0.7500000
[113] 0.5000000 0.3750000 0.4500000 0.1000000 0.4000000 
0.2500000 0.2500000
[120] 0.2500000 0.2500000 0.5000000 NA NA 
NA NA
[127] NA NA NA NA NA 
NA NA
[134] NA NA NA NA NA 
NA NA
[141] NA NA NA NA NA 
NA NA
[148] NA NA NA NA NA 
NA NA
[155] NA NA NA NA NA 
NA NA
[162] NA NA NA NA NA 
NA NA
[169] NA NA NA NA NA 
NA NA
[176] NA NA NA NA NA 
NA NA
[183] NA NA NA NA 0.2000000 
0.0005000 0.5000000
[190] 0.5000000 0.0250000 0.2500000 0.2500000 0.0100000 
0.3500000 0.1500000
[197] 0.3000000 0.5000000 0.0005000 0.3000000 0.4000000 
0.2500000 0.4000000
[204] 0.2500000 0.8500000 0.2500000 0.3750000 0.2500000 
0.1000000 0.3500000
[211] 0.0500000 0.2500000 0.2000000 5000.0000000 0.5000000 
NA NA
[218] NA NA NA NA NA 
NA NA
[225] NA NA NA NA NA 
NA NA
[232] NA NA NA NA NA 
NA NA
[239] NA NA NA NA NA 
NA NA
[246] NA NA NA NA NA 
NA NA
[253] NA NA NA NA NA 
NA NA
[260] NA NA NA NA NA 
NA NA
[267] NA NA NA NA NA 
NA NA
[274] NA NA NA NA NA 
NA 0.0500000
[281] 0.0000500 0.5000000 0.6000000 0.0050000 0.2500000 
0.2500000 0.0025000
[288] 0.4000000 0.1000000 0.2500000 0.5000000 0.0010000 
0.2500000 0.4000000
[295] 0.2500000 0.4500000 0.0500000 0.6000000 0.2500000 
0.4000000 0.0000500
[302] 0.0500000 0.3500000 0.0500000 0.1500000 0.0500000 
NA NA
[309] NA NA NA NA NA 
NA NA
[316] NA NA NA NA NA 
NA NA
[323] NA NA NA NA NA 
NA NA
[330] NA NA NA NA NA 
NA NA
[337] NA NA NA NA NA 
NA NA
[344] NA NA NA NA NA 
NA NA
[351] NA NA NA NA NA 
NA NA
[358] NA NA NA NA NA 
NA NA
[365] NA NA NA NA NA 
NA NA
[372] NA

*Here was my x:*
> x
[1] 20 200 2000 20000

I deleted [372] from y, because I thought it could help, the length of y
would be the same. It did not change the error report.
I did as.data.frame with both y and x and this did not help either. I am not
sure what I should do now. Thank you for help!





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