[R] log error for use on axis

NDC/jshipman Jeffery.L.Shipman at nasa.gov
Fri Jul 17 18:27:12 CEST 2009


Hi,
	I am new to R plot.  I am trying to scale my y axis in log.  When I  
do this I receive the following error

Error in axis(side = side, at = at, labels = labels, ...) :
   CreateAtVector [log-axis()]: axp[0] = 0 < 0!
In addition: Warning messages:
1: In plot.window(...) :
   nonfinite axis limits [GScale(-inf,1.31772,2, .); log=1]
2: In axis(side = side, at = at, labels = labels, ...) :
   CreateAtVector "log"(from axis()): axp[0] = 0 !


My code is as follows:

foundOr <- read.table("yahoos_f.txt", sep="," , header=T)
if (max(foundOr$s_) >= max(notFoundOr$s_)) maxY = log(max(foundOr$s_))  
else maxY = log(max(notFoundOr$s_))
jpeg('clusterYS_.jpg', quality = 100, bg = "white", res = 200, width =  
2000, height = 2000 )
plot(foundOr$uid, foundOr$s_, xlab="uid", ylab="Log Search Results",   
main="uid vs Search", pch=20, col="blue", log = "y", xlim=c(0,300),  
ylim=c(0,maxY))
dev.off()

If I remove the log = "y" everything works fine.  Am I using the log  
call incorrectly?  Any help would be appreciated.


yahoos_f.txt:

   uid,     yahoo,             s_
     1,         1,        15726.0
     2,         1,          747.0
     3,         1,         3504.0
     4,         1,        40704.0
     5,         1,           43.0
     6,         1,           41.0
     7,         1,          123.0
     8,         1,           65.0
     9,         1,     13761110.0
    10,         1,         9256.0
    11,         1,           46.0
    12,         1,         3429.0
    13,         1,        34923.0
    14,         1,         5830.0
    15,         1,        36900.0
    16,         1,       342074.0
    17,         1,            7.0
    18,         1,            1.0
    19,         1,         7452.0
    20,         1,           47.0
    21,         1,       663027.0
    22,         1,          331.0
    23,         1,        22828.0
    24,         1,        67763.0
    25,         1,        45546.0
    26,         1,            4.0
    27,         1,       109148.0
    28,         1,          118.0
    29,         1,        18376.0
    30,         1,        32210.0
    31,         1,      1019133.0
    32,         1,          219.0
    33,         1,           38.0
    34,         1,        61889.0
    35,         1,         1422.0
    36,         1,          606.0
    37,         1,      1086609.0
    38,         1,           49.0
    39,         1,        10619.0


757-864-7114
LARC/J.L.Shipman/jshipman
Jeffery.L.Shipman at nasa.gov




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