R help - May 2012 - write data using xlsReadWrite

Hai, I'm trying to write these var output data from these codes inside excel
file. My directory to store the data is 
/D:\FYP\image /
but receive an error message :

/Error in write.xls(mydata, "D:\\FYP\\image.mydata.xls") : 
  object 'mydata' not found/

these are my codes, can you help give an advice or idea with my problem:

/library("biOps")
library("waveslim")
library("xlsReadWrite")
x <- readTiff("D:\\FYP\\image\\SignatureImage\\user186g1.tif")
y <- imgBlockMedianFilter(x, 5)
#Plot image
#plot(y)
y.modwt <- modwt.2d(y, "la8", 2)
## Level 2 decomposition
par(mfrow=c(2,2), pty="s")
##Plot wavelets
image(y.modwt$LH2, col=rainbow(128), axes=FALSE, main="LH2")
image(y.modwt$HH2, col=rainbow(128), axes=FALSE, main="HH2")
image(y.modwt$LL2, col=rainbow(128), axes=FALSE, main="LL2")
image(y.modwt$HL2, col=rainbow(128), axes=FALSE, main="HL2")
#-------------------------------------------------------------------#
##Get the dimension
##LH2
dimLH2 <- dim(y.modwt$LH2)
dimLH2x <- dimLH2[1]
dimLH2y <- dimLH2[2]
varLH2xlist <- c(rep(0, dimLH2x))
varLH2ylist <- c(rep(0, dimLH2y))
##Loop to get variance from x axis
for(i in seq(dimLH2x)){
    varLH2xlist[i] <- var(y.modwt$LH2[i,])
}
##Get the variance from the overall x variance
varLH2x <- var(varLH2xlist)
##Loop to get variance from y axis
for(i in seq(dimLH2y)){
    varLH2ylist[i] <- var(y.modwt$LH2[,i])
}
##Get the variance from the overall y variance
varLH2y <- var(varLH2ylist)
#-----------------------------------------------------------------#
##Get the dimension
##HH2
dimHH2 <- dim(y.modwt$HH2)
dimHH2x <- dimHH2[1]
dimHH2y <- dimHH2[2]
varHH2xlist <- c(rep(0, dimHH2x))
varHH2ylist <- c(rep(0, dimHH2y))
##Loop to get variance from x axis
for(i in seq(dimHH2x)){
    varHH2xlist[i] <- var(y.modwt$HH2[i,])
}
##Get the variance from the overall x variance
varHH2x <- var(varHH2xlist)
##Loop to get variance from y axis
for(i in seq(dimHH2y)){
    varHH2ylist[i] <- var(y.modwt$HH2[,i])
}
##Get the variance from the overall y variance
varHH2y <- var(varHH2ylist)
#-----------------------------------------------------------------#
##Get the dimension
##LL2
dimLL2 <- dim(y.modwt$LL2)
dimLL2x <- dimLL2[1]
dimLL2y <- dimLL2[2]
varLL2xlist <- c(rep(0, dimLL2x))
varLL2ylist <- c(rep(0, dimLL2y))
##Loop to get variance from x axis
for(i in seq(dimLL2x)){
    varLL2xlist[i] <- var(y.modwt$LL2[i,])
}
##Get the variance from the overall x variance
varLL2x <- var(varLL2xlist)
##Loop to get variance from y axis
for(i in seq(dimLL2y)){
    varLL2ylist[i] <- var(y.modwt$LL2[,i])
}
##Get the variance from the overall y variance
varLL2y <- var(varLL2ylist)
#-----------------------------------------------------------------#
##Get the dimension
##HL2
dimHL2 <- dim(y.modwt$HL2)
dimHL2x <- dimHL2[1]
dimHL2y <- dimHL2[2]
varHL2xlist <- c(rep(0, dimHL2x))
varHL2ylist <- c(rep(0, dimHL2y))
##Loop to get variance from x axis
for(i in seq(dimHL2x)){
    varHL2xlist[i] <- var(y.modwt$HL2[i,])
}
##Get the variance from the overall x variance
varHL2x <- var(varHL2xlist)
##Loop to get variance from y axis
for(i in seq(dimHL2y)){
    varHL2ylist[i] <- var(y.modwt$HL2[,i])
}
##Get the variance from the overall y variance
varHL2y <- var(varHL2ylist)
#-----------------------------------------------------------------#
##write excel file
write.xls(mydata, "D:\\FYP\\image.mydata.xls")/

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You're trying to write an object that you've never created. If you
want to write `varHL2y`, which it appears you do, you would replace
that for `mydata` in your command.

Best,
Ethan


On Sun, May 13, 2012 at 1:33 AM, diyanah <yanadj28 at gmail.com>
wrote:
> Hai, I'm trying to write these var output data from these codes inside
excel
> file. My directory to store the data is
> /D:\FYP\image /
> but receive an error message :
>
> /Error in write.xls(mydata, "D:\\FYP\\image.mydata.xls") :
> ?object 'mydata' not found/
>
> these are my codes, can you help give an advice or idea with my problem:
>
> /library("biOps")
> library("waveslim")
> library("xlsReadWrite")
> x <- readTiff("D:\\FYP\\image\\SignatureImage\\user186g1.tif")
> y <- imgBlockMedianFilter(x, 5)
> #Plot image
> #plot(y)
> y.modwt <- modwt.2d(y, "la8", 2)
> ## Level 2 decomposition
> par(mfrow=c(2,2), pty="s")
> ##Plot wavelets
> image(y.modwt$LH2, col=rainbow(128), axes=FALSE, main="LH2")
> image(y.modwt$HH2, col=rainbow(128), axes=FALSE, main="HH2")
> image(y.modwt$LL2, col=rainbow(128), axes=FALSE, main="LL2")
> image(y.modwt$HL2, col=rainbow(128), axes=FALSE, main="HL2")
> #-------------------------------------------------------------------#
> ##Get the dimension
> ##LH2
> dimLH2 <- dim(y.modwt$LH2)
> dimLH2x <- dimLH2[1]
> dimLH2y <- dimLH2[2]
> varLH2xlist <- c(rep(0, dimLH2x))
> varLH2ylist <- c(rep(0, dimLH2y))
> ##Loop to get variance from x axis
> for(i in seq(dimLH2x)){
> ? ?varLH2xlist[i] <- var(y.modwt$LH2[i,])
> }
> ##Get the variance from the overall x variance
> varLH2x <- var(varLH2xlist)
> ##Loop to get variance from y axis
> for(i in seq(dimLH2y)){
> ? ?varLH2ylist[i] <- var(y.modwt$LH2[,i])
> }
> ##Get the variance from the overall y variance
> varLH2y <- var(varLH2ylist)
> #-----------------------------------------------------------------#
> ##Get the dimension
> ##HH2
> dimHH2 <- dim(y.modwt$HH2)
> dimHH2x <- dimHH2[1]
> dimHH2y <- dimHH2[2]
> varHH2xlist <- c(rep(0, dimHH2x))
> varHH2ylist <- c(rep(0, dimHH2y))
> ##Loop to get variance from x axis
> for(i in seq(dimHH2x)){
> ? ?varHH2xlist[i] <- var(y.modwt$HH2[i,])
> }
> ##Get the variance from the overall x variance
> varHH2x <- var(varHH2xlist)
> ##Loop to get variance from y axis
> for(i in seq(dimHH2y)){
> ? ?varHH2ylist[i] <- var(y.modwt$HH2[,i])
> }
> ##Get the variance from the overall y variance
> varHH2y <- var(varHH2ylist)
> #-----------------------------------------------------------------#
> ##Get the dimension
> ##LL2
> dimLL2 <- dim(y.modwt$LL2)
> dimLL2x <- dimLL2[1]
> dimLL2y <- dimLL2[2]
> varLL2xlist <- c(rep(0, dimLL2x))
> varLL2ylist <- c(rep(0, dimLL2y))
> ##Loop to get variance from x axis
> for(i in seq(dimLL2x)){
> ? ?varLL2xlist[i] <- var(y.modwt$LL2[i,])
> }
> ##Get the variance from the overall x variance
> varLL2x <- var(varLL2xlist)
> ##Loop to get variance from y axis
> for(i in seq(dimLL2y)){
> ? ?varLL2ylist[i] <- var(y.modwt$LL2[,i])
> }
> ##Get the variance from the overall y variance
> varLL2y <- var(varLL2ylist)
> #-----------------------------------------------------------------#
> ##Get the dimension
> ##HL2
> dimHL2 <- dim(y.modwt$HL2)
> dimHL2x <- dimHL2[1]
> dimHL2y <- dimHL2[2]
> varHL2xlist <- c(rep(0, dimHL2x))
> varHL2ylist <- c(rep(0, dimHL2y))
> ##Loop to get variance from x axis
> for(i in seq(dimHL2x)){
> ? ?varHL2xlist[i] <- var(y.modwt$HL2[i,])
> }
> ##Get the variance from the overall x variance
> varHL2x <- var(varHL2xlist)
> ##Loop to get variance from y axis
> for(i in seq(dimHL2y)){
> ? ?varHL2ylist[i] <- var(y.modwt$HL2[,i])
> }
> ##Get the variance from the overall y variance
> varHL2y <- var(varHL2ylist)
> #-----------------------------------------------------------------#
> ##write excel file
> write.xls(mydata, "D:\\FYP\\image.mydata.xls")/
>
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>
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Thank you,

I came up with these. Problem solve.

varValue <- data.frame(varLH2x, varLH2y, varHH2x, varHH2y, varLL2x, varLL2y,
varHL2x, varHL2y)
res<-write.xlsx(varValue, "D:\\FYP\\image\\Cropped
Images\\user61\\genuineUser61temp.xlsx",
sheetName="Sheet1",col.names=TRUE,
row.names=TRUE, append=FALSE)



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Hai,
I use these codes to read my data from the above data that I create, but how
can I get rid of the first V1, because it is row number, not one of my data
value. 
Second, how can I read row 1 and only column 1 (V2 value for example).

setwd("D:\\FYP\\image\\Cropped Images\\user61")
info
<-read.xlsx("forgerUser61.xlsx",sheetName="Sheet1",rowIndex=2:2,header=FALSE)
> V1                  V2             V3             V4         V5           
> V6             V7             V8             V9
>    1  1 1859.935 12068.61 281.5818 283.75 3330043 3495302 7557.209
> 1887.269 
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On May 15, 2012, at 10:08 PM, diyanah wrote:
> Hai,
> I use these codes to read my data from the above data that I create,  
> but how
> can I get rid of the first V1, because it is row number, not one of  
> my data
> value.
Why do you want to get rid of it? What harm is it doing? (Dataframes  
need to have rownames, many functions depend on that aspect of  
dataframes,  and if you do not provide them,  then default rownames  
get inserted.)
> Second, how can I read row 1 and only column 1 (V2 value for example).
Use colClasses, nrows
?read.table
>
> setwd("D:\\FYP\\image\\Cropped Images\\user61")
> info
> <- 
> read 
> .xlsx 
>
("forgerUser61.xlsx",sheetName="Sheet1",rowIndex=2:2,header=FALSE)
>
>> V1                  V2             V3             V4         V5
>> V6             V7             V8             V9
>>   1  1 1859.935 12068.61 281.5818 283.75 3330043 3495302 7557.209
>> 1887.269
>
> --

David Winsemius, MD
West Hartford, CT