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Generating a Date Range With a Tally Table

Another way you can generate a range of dates is by utilizing a Tally Table to create the dates between the range: Declare @FromDate Date = '2014-04-21', @ToDate Date = '2014-05-02' ;With E1(N) As (Select 1 From (Values (1), (1), (1), (1), (1), (1), (1), (1), (1), (1)) DT...

Cross Validation and Tuning with xgboost

library(caret) # for dummyVars library(RCurl) # download https data library(Metrics) # calculate errors library(xgboost) # model ############################################################################### # Load data from UCI Machine Learning Repository (http://archive.ics.uci.edu/ml/data...

Overview of the basic path drawing commands: lines and curves

================== TODO: Link each of the drawing commands below to their individual examples. I don't know how to do this since the links to the individual examples point towards the "draft" folder. TODO: Add examples for these path "action" commands: stroke(), fill(), clip() ...

lineTo (a path command)

context.lineTo(endX, endY) Draws a line segment from the current pen location to coordinate [endX,endY] <!doctype html> <html> <head> <style> body{ background-color:white; } #canvas{border:1px solid red; } </style> <script> window.onload=(fun...

arc (a path command)

context.arc(centerX, centerY, radius, startingRadianAngle, endingRadianAngle) Draws a circular arc given a centerpoint, radius and starting & ending angles. The angles are expressed as radians. To convert degrees to radians you can use this formula: radians = degrees * Math.PI / 180;. Angle ...

quadraticCurveTo (a path command)

context.quadraticCurveTo(controlX, controlY, endingX, endingY) Draws a quadratic curve starting at the current pen location to a given ending coordinate. Another given control coordinate determines the shape (curviness) of the curve. <!doctype html> <html> <head> <style...

bezierCurveTo (a path command)

context.bezierCurveTo(control1X, control1Y, control2X, control2Y, endingX, endingY) Draws a cubic Bezier curve starting at the current pen location to a given ending coordinate. Another 2 given control coordinates determine the shape (curviness) of the curve. <!doctype html> <html&gt...

arcTo (a path command)

context.arcTo(pointX1, pointY1, pointX2, pointY2, radius); Draws a circular arc with a given radius. The arc is drawn clockwise inside the wedge formed by the current pen location and given two points: Point1 & Point2. A line connecting the current pen location and the start of the arc is au...

rect (a path command)

context.rect(leftX, topY, width, height) Draws a rectangle given a top-left corner and a width & height. <!doctype html> <html> <head> <style> body{ background-color:white; } #canvas{border:1px solid red; } </style> <script> window.onload...

closePath (a path command)

context.closePath() Draws a line from the current pen location back to the beginning path coordinate. For example, if you draw 2 lines forming 2 legs of a triangle, closePath will "close" the triangle by drawing the third leg of the triangle from the 2nd leg's endpoint back to the firs...

beginPath (a path command)

context.beginPath() Begins assembling a new set of path commands and also discards any previously assembled path. It also moves the drawing "pen" to the top-left origin of the canvas (==coordinate[0,0]). Although optional, you should ALWAYS start a path with beginPath The discarding ...

Find max and min Element and Respective Index in a Vector

To find the largest or smallest element stored in a vector, you can use the methods std::max_element and std::min_element, respectively. These methods are defined in <algorithm> header. If several elements are equivalent to the greatest (smallest) element, the methods return the iterator to th...

translate

Move a rectangle 10 units to the right and 20 units down: <svg xmlns="http://www.w3.org/2000/svg"> <rect x="0" y="0" width="30" height="30" transform="translate(10, 20)" /> </svg> Move it 0 units horizontally and...

Multiple transformations

Transformations can be concatenated and are applied right to left Rotate a rectangle by 90 degrees and then move it down by 20 units and to the right by 20 units: <svg xmlns="http://www.w3.org/2000/svg"> <rect x="-10" y="-20" width="20" height=...

Showing code snippets and output

Two popular options are to use: ipython notation: In [11]: df = pd.DataFrame([[1, 2], [3, 4]]) In [12]: df Out[12]: 0 1 0 1 2 1 3 4 Alternatively (this is popular over in the python documentation) and more concisely: df.columns # Out: RangeIndex(start=0, stop=2, step=1) df[0...

Pandas version support

Most examples will work across multiple versions, if you are using a "new" feature you should mention when this was introduced. Example: sort_values.

Automatic package management using Cask

Cask is a project management tool which can be also used to easily manage your local emacs configuration. Installing cask is easy. You can either run the following command on the command-line: curl -fsSL https://raw.githubusercontent.com/cask/cask/master/go | python Or if you are on a mac, you...

Widening and Narrowing

Needs editing.

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <rect x="50" y="50" height="100" width="100" stroke="black" fill="yellow"> <animate attributeT...

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <rect x="50" y="50" height="100" width="100" stroke="black" fill="yellow"> <animateTransform a...

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