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I am trying to compute the periodicity of a time series. I would like to know which function in R does it. Also, how do I plot a Enright / Chi-square periodogram using R ? ( Enright, J.T., 1965, Journal of Theoret. Biol. 8,426-468) Greatly appreciate your help. Thanks in advance, Sukhaswami Malladi *************************************************************************** The contents of this communication are intended only for th...{{dropped}}

...t;)) ## -- c("date") does not work sapply(d, class) d$CDATE <- as.character(d$CDATE) sapply(d, class) dbExecStatement(ps,d) Error in oraExecStatement(ps, data, ...) : RS-DBI driver: (ORA-01861: literal does not match format string ) Thanks for your help in advance, Swami (smalladi at lexgen.com) ----------------------------- Correspondence with David James ----------------------- Dear David, Thanks for your kind reply. I did what you suggested, coerced d into a character vector. Now I get an Oracle error - d <- data.frame(CDATE = "TO_DATE('2004-03-10 10:12:00...

Dear List, What is the way in R to plot a graph having date time (e.g. format 12/31/2002 13:12) in the x axis and numerical value (e.g. temperature) on the Y-axis ? I could not get 'plot()' to do this as X axis values are non-numeric. 'bwplot()' sorts the date values and thereby changes the order of the dates and of Y. The date/time values have to be shown on the X-axis as tick

...ySQL) # 1 con <- dbConnect( ... ) # 2 ... rs <- dbSendQuery(con,qry) # 3 rdat <- fetch(rs,n=10000) # 4 ... dbDisconnect(con) # 5 ------------------------------------------- lines #3 and #4 are repeated about 10000 times in the script. Thanks in advance for any help. Sukhaswami Malladi *************************************************************************** The contents of this communication are intended only for the addressee and may contain confidential and/or privileged material. If you are not the intended recipient, please do not read, copy, use or disclose this commu...

...mple: > princomp(x) Error in cov.wt(z) : x must contain finite values only There is no error for USArrests example data which does not have index. > boxplot(x) Error in x[floor(d)] + x[ceiling(d)] : non-numeric argument to binary operator Thanks in advance for any suggestions Sukhaswami Malladi *************************************************************************** The contents of this communication are intended only for the addressee and may contain confidential and/or privileged material. If you are not the intended recipient, please do not read, copy, use or disclose this com...

R-help, Could someone in the list write as to what is the R function to perform repeated measures ANOVA and post-hoc tests ? Thanks in advance, swami *************************************************************************** The contents of this communication are intended only for the addressee and may contain confidential and/or privileged material. If you are not the intended recipient,

Happy New Year to all in the list! I am trying to issue an SQL query to a database from R using RODBC (on Windows). The data source file is on my PC hard disk : C:\Program Files\ODBC\sql.dsn The "\" character does not get interpreted properly in R - it is removed from the file-spec string or if I specify "\\" it appears as such with a syntax error in odbcConnect(dsn,