Re: [R] Dates as headers causing confusion but needed to convert to Julian days for ANOVA

I use check.names=FALSE more often than not, and I almost never end up changing them "anyway". Back-ticks as quotes are very effective at allowing unusual column names to be used in R code. (The only exception I have to this is when programatically building formulas the eval step gets quite conv

Re: [R] Dates as headers causing confusion but needed to convert to Julian days for ANOVA

On 10/25/2021 7:09 AM, Philip Monk wrote: Hello, First post - apologies if I get anything wrong - either in describing the question (I've only been using R for a week) or etiquette. I have CSV files of Land Surface Temperature (LST) data derived from Landsat 8 data and exported from Google Eart

Re: [R] Dates as headers causing confusion but needed to convert to Julian days for ANOVA

You did not say which function you used to import the csv file, but it looks like you probably used read.csv without setting the check.names argument to FALSE. Whether you change that out not, once you have reshaped the data, you can use a format specifier with as.Date to extract a date. (See ?

Re: [R] Dates as headers causing confusion but needed to convert to Julian days for ANOVA

Well, both newbies and oldies need to read and follow the Help files carefully. In this case, note the "check.names" argument of ?read.csv. You need to set it to FALSE in your (omitted) read.csv call, because your strings are not syntactically valid names (follow the "make.names" link to learn wha

[R] Dates as headers causing confusion but needed to convert to Julian days for ANOVA

Hello, First post - apologies if I get anything wrong - either in describing the question (I've only been using R for a week) or etiquette. I have CSV files of Land Surface Temperature (LST) data derived from Landsat 8 data and exported from Google Earth Engine. I am investigating whether the co