travisvaught.blogspot.com
Travis Vaught: TDD in Python: P&L Statement - Step 2
http://travisvaught.blogspot.com/2009/10/tdd-in-python-p-statement-step-2.html
Tuesday, October 6, 2009. TDD in Python: P&L Statement - Step 2. As a continuation of my TDD experiment, I've implemented a bit more functionality toward a P&L statement. As usual, I've posted all the code. To github. This exercise implements the queueing I listed as a need in my first post. On this subject. So, for a "story problem":. What's the cost basis for Eddie's current holdings? Queue in the form of a test:. Def portfolio holding fifo test():. Multiplier=1., fee=7.0, total amt=185250.,. Hremove f...
straightupcoding.blogspot.com
Straight Up Coding: SymPy Plot: First Screenshot of Labeled Axes
http://straightupcoding.blogspot.com/2007/07/sympy-plot-first-screenshot-of-labeled.html
Tuesday, July 24, 2007. SymPy Plot: First Screenshot of Labeled Axes. Good thing a picture is worth 10* 3. Words; I'm burnt out. Among other things, it took me way too long to figure out how to automatically position the axis labels after camera rotations. It still isn't perfect. I also need to add in grid lines. I need a break, I've been coding for a nearly unbroken week. Posted by Brian Jorgensen. Keep going. :). I just commited a line into the plotting.py example, so that it shows axes.
straightupcoding.blogspot.com
Straight Up Coding: July 2007
http://straightupcoding.blogspot.com/2007_07_01_archive.html
Sunday, July 29, 2007. Mathematicians are a Hungry Bunch. After yesterday's donut, today it's the Ding Dong Surface. Thanks to Alex who originally pointed me to the Kiss Surface. Also named after junk food). P[1] = sqrt(1-y)*y, [x,0,2*pi,60], [y,-1,4,100], 'mode=cylindrical'. By the way, the torus shown yesterday can be plotted with:. A,b = 1, 0.5. P[2] = (a b*cos(x) *cos(y), (a b*cos(x) *sin(y), b*sin(x), [x,0,2*pi,20], [y,0,2*pi,20]. However, at writing there is a hang bug. Posted by Brian Jorgensen.
straightupcoding.blogspot.com
Straight Up Coding: SymPy Plotting: Custom Colors Tutorial
http://straightupcoding.blogspot.com/2007/08/sympy-plotting-custom-colors-tutorial.html
Thursday, August 9, 2007. SymPy Plotting: Custom Colors Tutorial. One of the most-requested features for SymPy plotting has been the ability to use custom color schemes. I've now implemented this with the syntax described in this post. The upshot is that you can now use any color scheme expressible as a function of x, y, z, u, and/or v. I'll give some concrete examples to get you started, and then you can do something cool with it. We'll start by setting up a plot:. From sympy import symbols, Plot. 07, (...
straightupcoding.blogspot.com
Straight Up Coding: Some thoughts on Plot coloring (with pics)
http://straightupcoding.blogspot.com/2007/07/some-thoughts-on-plot-coloring-with.html
Saturday, July 21, 2007. Some thoughts on Plot coloring (with pics). I want to support two modes for custom coloring schemes in SymPy Plot. The first mode will allow you to supply a single function and a color gradient (pseudo-code):. P[1]color function = z, (0.0,0.0,1.0), (1.0,0.0,0.0). P[1]color function = z, (0.0,0.0,1.0,0.0), (0.0,1.0,0.0,0.5), (1.0,0.0,0.0,1.0). As you can see, this fades from (min, blue) to (mid, green) to (max, red). P[1]color function = x, y, z. So in RGB-parametric mode, there w...
straightupcoding.blogspot.com
Straight Up Coding: Mathematicians are a Hungry Bunch
http://straightupcoding.blogspot.com/2007/07/mathematicians-are-hungry-bunch.html
Sunday, July 29, 2007. Mathematicians are a Hungry Bunch. After yesterday's donut, today it's the Ding Dong Surface. Thanks to Alex who originally pointed me to the Kiss Surface. Also named after junk food). P[1] = sqrt(1-y)*y, [x,0,2*pi,60], [y,-1,4,100], 'mode=cylindrical'. By the way, the torus shown yesterday can be plotted with:. A,b = 1, 0.5. P[2] = (a b*cos(x) *cos(y), (a b*cos(x) *sin(y), b*sin(x), [x,0,2*pi,20], [y,0,2*pi,20]. However, at writing there is a hang bug. Posted by Brian Jorgensen.
straightupcoding.blogspot.com
Straight Up Coding: VIDEO: Key Bank Tower Implosion (Downtown Salt Lake City, UT)
http://straightupcoding.blogspot.com/2007/08/video-key-bank-tower-implosion-downtown.html
Saturday, August 18, 2007. VIDEO: Key Bank Tower Implosion (Downtown Salt Lake City, UT). This is the video I shot of the Key Bank Tower controlled demolition/implosion in downtown Salt Lake City, UT, earlier this morning. We were standing on the East side of the parking lot across the street from the Triad center and the unfortunately re-branded Energy Solutions Arena (formerly the Delta Center). Digg It. Update: Full HD-res H.264 version. Posted by Brian Jorgensen. Subscribe to: Post Comments (Atom).
straightupcoding.blogspot.com
Straight Up Coding: August 2007
http://straightupcoding.blogspot.com/2007_08_01_archive.html
Tuesday, August 21, 2007. I've written a final SoC report and posted it in the SymPy wiki. Click here. To read it. You will also find similar documents from other SymPy SoC participants here. Posted by Brian Jorgensen. Saturday, August 18, 2007. VIDEO: Key Bank Tower Implosion (Downtown Salt Lake City, UT). Update: Full HD-res H.264 version. Posted by Brian Jorgensen. Thursday, August 9, 2007. SymPy Plotting: Custom Colors Tutorial. From sympy import symbols, Plot. X,y,z,u,v = symbols('xyzuv'). Evaluate ...
straightupcoding.blogspot.com
Straight Up Coding: April 2007
http://straightupcoding.blogspot.com/2007_04_01_archive.html
Monday, April 30, 2007. Here's the schedule I've come up with for reading and discussing GEB. Page numbers refer to the 20th-anniversary Edition. You can also add the google calendar. 2007-05-14 Introduction (30 pages). 2007-05-21 Chapter 1-3 (49 pages). 2007-05-28 Chapter 4 (45 pages). 2007-06-04 Chapter 5 (31 pages). 2007-06-11 Chapter 6-7 (46 pages). 2007-06-18 Chapter 8-9 (81 pages). 2007-06-25 Chapter 10 (52 pages). 2007-07-02 Chapter 11-12 (69 pages). 2007-07-09 Chapter 13 (32 pages). Is to read tw...
