R: Multiple Linear Regression error -


i having hard times running lm() function , understanding error.

so, script this:

#! /usr/bin/env/ rscript  meteodata <- read.table("/path/to/dataset.txt", header=t) meteodata summary(meteodata)   plot(meteodata)  lmodel <- lm(temperature~altitude+sea.distance, data=meteodata)

and console output this:

temperature station.id latitude longtitude sea.distance altitude 1         20,1         s1      0,5        0,5          0,5        0 2         20,5         s1      0,5        0,5          0,5        0 3         19,3         s1      0,5        0,5          0,5        0 4         18,6         s1      0,5        0,5          0,5        0 5         21,5         s1      0,5        0,5          0,5        0 6         17,1         s2      3,5        2,5          1,5      200 7         18,3         s2      3,5        2,5          1,5      200 8         16,8         s2      3,5        2,5          1,5      200 9         17,5         s2      3,5        2,5          1,5      200 10        16,4         s2      3,5        2,5          1,5      200 11        18,4         s3      2,5        3,5          0,5      100 12        19,1         s3      2,5        3,5          0,5      100 13        18,9         s3      2,5        3,5          0,5      100 14        17,8         s3      2,5        3,5          0,5      100 15        17,6         s3      2,5        3,5          0,5      100 16        15,1         s4        4          0            4      400 17        15,5         s4        4          0            4      400 18        15,0         s4        4          0            4      400 19        14,9         s4        4          0            4      400 20        15,8         s4        4          0            4      400   temperature station.id latitude longtitude sea.distance    altitude    14,9   : 1   s1:5       0,5:5    0  :5      0,5:10       min.   :  0    15,0   : 1   s2:5       2,5:5    0,5:5      1,5: 5       1st qu.: 75    15,1   : 1   s3:5       3,5:5    2,5:5      4  : 5       median :150    15,5   : 1   s4:5       4  :5    3,5:5                   mean   :175    15,8   : 1                                               3rd qu.:250    16,4   : 1                                               max.   :400    (other):14                                                             warning messages: 1: in model.response(mf, "numeric") :   using type = "numeric" factor response ignored 2: in ops.factor(y, z$residuals) : - not meaningful factors

i ve read similar questions here , there still can't figure out doing wrong. need temperature response y variable calculated independent x1,x2 altitude , sea.distance variables.

any appreciated, try specific. in advance

r uses . decimal separator. data uses , , r interprets data characters, made factor variables default. use dec="," tell read.table data numeric , decimal separator.


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