Hello All,
I have a data frame called windSFO of four columns, wind speed, wind
direction, station number, and date (yyyymmdd). I downloaded the gz
data from a site online and then unzipped it using readLines. I then
concatenated these four columns from the unzipped data into a
dataframe using cbind.
windSFO = data.frame(cbind(ws,wd,stn,yearSite))
Here are the first four rows as an example:
ws wd stn yearSite
1 36 290 724940-23234 20090101
2 77 280 724940-23234 20090101
3 72 290 724940-23234 20090101
4 46 290 724940-23234 20090101
I'm trying to make a wind rose using the windRose function but I keep
getting an error that I don't understand. I type in:
windRose(windSFO,ws='ws',wd='wd')
I then get the error:
Error in Summary.factor(c(27L, 35L, 34L, 29L, 28L, 25L, 25L, 24L, 24L, :
max not meaningful for factors
In addition: Warning messages:
1: In Ops.factor(mydata[[wd]], 10) : %% not meaningful for factors
2: In Ops.factor(mydata[[wd]], angle) : / not meaningful for factors
Can anyone tell me what this means/what I'm doing wrong?
Also, I have R version 3.1.1
Thank you!
Alexandra
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