LISPing and misc.

Smooth six months twice daily data in R

The data is entered on a LibreOffice spread sheet, and read into R wih read_ods(). I adjust the time data like this:

data$Time <- as.POSIXct(strptime(data$Time , "%m/%d/%y %I:%M %p"))
data$TimeCode <- as.numeric(data$Time)

My goal

I want to average all items, within a averaging time window of a given size, for the entire data set, the window starts at the first day of the data set and is advanced a single day until the window is beyond the last day of the data set.

Whats in a day?

86400 Seconds

When do seconds start counting?

January 1, 1970 00:00:00 GMT is the zero second.

That is on 2019-05-01 08:39:00 there have been 1541598420 seconds since Jan 1, 1970

R dates are the number of days since January 1, 1970

This means the numeric date time is date-number*86400

The earliest time-code is min(data$TimeCode) and the last time-code in max(data$TimeCode). The begining data-time-window time-code is 86400*as.numeric(min(data$Date)) the ending date-time-window time-code is the beginning plus the window size in seconds.

This is the Hello World from github.io. I prefer this over WIX

This is a Windows 10 system

My system is a Windows 10/64bit

Download, expand and update EMACS_HOME

I downloaded the new emacs from the GNU ftp site. The file was https://ftp.gnu.org/gnu/emacs/windows/emacs-26/emacs-26.2-x86_64.zip

The downloaded emacs zip was expanded into C:\Program Files\Emacs\emacs-26.2-x86_64 this is my new EMACS_HOME.

My shortcuts now all depend on EMACS_HOME

I have three shortcut for emacs, the daemon, the client and no-daemon.

For the daemon the shortcut target is:

Updating SBCL on Windows

Download the new installer, http://prdownloads.sourceforge.net/sbcl/sbcl-1.4.14-x86-64-windows-binary.msi. Run the installer, the old SBCL is removed and the new one is installed. I had a few dll which I placed next to my sbcl.exe which remained in the old location. I moved these to the new location. The SBCL_HOME was also reset to the new location.

My .emacs file slime-lisp-implemenations is written in terms of SBCL_HOME so it, just works.