HeinrichHartmann

HeinrichHartmann

(defun ignite-start ()
  "Auto advaince slides"
  (interactive)
  (set 'ignite-interval 15)
  (set 'ignite-t ignite-interval)
  (message (format "Go! (%d sec)" ignite-interval))
  (run-at-time 0 1 (lambda ()
                     (if (<= ignite-t 0)
                         (progn
                           (doc-view-next-page)

HeinrichHartmann

#!/usr/bin/env python
#
# Analog Input with ADC0832 chip
#
# Datasheet: http://www.ti.com/lit/ds/symlink/adc0838-n.pdf
# Part of SunFounder LCD StarterKit
# http://www.sunfounder.com/index.php?c=show&id=21&model=LCD%20Starter%20Kit
#

import time

HeinrichHartmann

#include <stdio.h>
#include <string.h>
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>

// Helper function to print the stack contents
// Values other than numbers and strings are printed as "(null)"
void print_stack(lua_State *L, char* title){
  int nargs = lua_gettop(L);

HeinrichHartmann

# Copyright (c) 2015 Heinrich Hartmann
# MIT License http://choosealicense.com/licenses/mit/

import gdata.spreadsheet.service

class GoogleDriveConnection(object):
    def __init__(self, email, password):
        self.client = gdata.spreadsheet.service.SpreadsheetsService()
        self.client.ClientLogin(email, password)
    

HeinrichHartmann

Glossary of Monitoring

• A system is a set of connected components

The definition of connected and components is missing. I think we can go with definitions like:

• A components is a set of processes (in the OS sense)
• Two components are connected if they can talk to each other (over a network or IPC).

Example: A LAMP system, consists of components:

HeinrichHartmann

;; Similar to: http://stackoverflow.com/questions/43765/pin-emacs-buffers-to-windows-for-cscope/65992#65992
(defun pin-buffer ()
  "Pin buffer to current window."
  (interactive)
  (message
   (if (let (window (get-buffer-window (current-buffer)))
         (set-window-dedicated-p window (not (window-dedicated-p window))))
       "pinned buffer" "un-pinned buffer")
   ))

HeinrichHartmann

from matplotlib import pyplot as plt
import numpy as np
X = np.genfromtxt("DataSets/RequestRates.csv", delimiter=",")[:,1]
bins = [500, 700, 800, 900, 1000, 1500, 1800, 2000, 2200]
bin_count = len(bins) - 1
sample_counts = [0] * bin_count
for x in X:
  for i in range(bin_count):
    if (bins[i] <= x) and (x < bins[i + 1]):
      sample_counts[i] += 1

HeinrichHartmann

DROP VIEW IF EXISTS ft_trips;
DROP VIEW IF EXISTS ft_stats;

-- Create view with basic gps statistics:
-- a) trip_id
-- b) Sample Count
-- c) Maximal Distance to Helsinki Train Station 
CREATE VIEW ft_stats(trip_id, count, dist) AS
  SELECT trip_id, count(lonlat), Max(st_distance(lonlat, St_geometryfromtext('POINT(24.6006695 60.1893798)',4326)))
  FROM sensor_gps

HeinrichHartmann

Monitor /etc/ using git

1. Initialize a new git repository at /etc/

    cd /etc/
    sudo git init
   

2. Setup .gitignore

cat << EOF | sudo tee .gitignore