[R] Error in dist command

[Friedrich Leisch]

>>>>> On Fri, 14 Jan 2000 15:26:22 +0100,
>>>>> Casper Frederiksen (CF) wrote:

CF> Can anybody tell me why I get the following error:
CF> Error in dist(airquality) : NA/NaN/Inf in foreign function call (arg 1)

This data set contains missing values as can be seen in:

R> summary(airquality)
     Ozone           Solar.R           Wind             Temp      
 Min.   :  1.00   Min.   :  7.0   Min.   : 1.700   Min.   :56.00  
 1st Qu.: 18.00   1st Qu.:115.8   1st Qu.: 7.400   1st Qu.:72.00  
 Median : 31.50   Median :205.0   Median : 9.700   Median :79.00  
 Mean   : 42.13   Mean   :185.9   Mean   : 9.958   Mean   :77.88  
 3rd Qu.: 63.25   3rd Qu.:258.8   3rd Qu.:11.500   3rd Qu.:85.00  
 Max.   :168.00   Max.   :334.0   Max.   :20.700   Max.   :97.00  
 NA's   : 37.00   NA's   :  7.0                                   
     Month            Day      
 Min.   :5.000   Min.   : 1.0  
 1st Qu.:6.000   1st Qu.: 8.0  
 Median :7.000   Median :16.0  
 Mean   :6.993   Mean   :15.8  
 3rd Qu.:8.000   3rd Qu.:23.0  
 Max.   :9.000   Max.   :31.0  
                               

(NA's in Ozone and Solar.R) which dist cannot handle.

Try something like

dist(airquality[complete.cases(airquality),])

to use only observations without missing values.

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                        Friedrich  Leisch 
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