Mathematica
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Prediction Bands and Confidence Intervals Hello, Does anyone have experience using MeanPredictionBands or SinglePredictionBands ? There doesn=92t seem to be much documentation available on this. I have 18 observations of (x, y) ordered pairs assumed to be taken from the same population: {{202, 1}, {265, 2}, {363, 3}, {508, 4}, {571, 5}, {755, 6}, {... 25 Jul 2010 02:17
tweaking VectorPlot... Looking at this example in the documentation... points = {{-1, -1}, {-1, 1}, {1, -1}, {1, 1}}; VectorPlot[{-1 - x^2 + y, 1 + x - y^2}, {x, -2, 2}, {y, -2, 2}, VectorPoints -> points, VectorScale -> .25, Epilog -> {Red, PointSize[Medium], Point[points]}] I would prefer for the *tail* of the vector to be si... 27 Jul 2010 05:09
Strange use of time... Hello, See below a short test of the time used by a function brpCrossCorrCh1AndCh2[]; Looking at the time spent it turns out that 1) the total time spend by the Do-Loop is governed by few calls to the above brpCrossCorrCh1AndCh2; 2) the distribution of time spend is strange at first look: mostly ~ < 10^-16 sec o... 25 Jul 2010 02:17
All pairs shortest paths How do you obtain the all-pairs shortest paths of a graph in Mathematica? i.e. the paths themselves and not just their lengths. -- Dr Jon Harrop, Flying Frog Consultancy Ltd. http://www.ffconsultancy.com ... 31 Jul 2010 03:13
Convert PNG image to PDF CMYK? How do I convert a PNG image (as might be found at Open Clip Art dot Org) to a PDF in the CMYK color format? ... 24 Jul 2010 05:52
Experimental Data Analyst Dear group, Is some one has already manipulate the Experimental Data Analyst package which seems to go beyond some data ploting features of Mathematica 7? What is the real extra features of EDA? As I am a newby in Mathematica 7 may be my question is stupid... Sincerelly Jean-Eric ... 25 Jul 2010 02:17
Assign value to variable Hello. I'm working with some expressions that are dependent of several variables co1, co2, ... , con. I would like to know how can I assign values iteratively to some of these variables. I tried: For[i=1,i<=100,i++, Symbol["co"<>ToString[i]]=0; ]; but it doesn't work. For each iteration it says coi is Prot... 25 Jul 2010 02:17
trading Hi, I'd like to be able to connect to live data feed for charting and analytics + Order routing(trade futures and possibly become an Introducing Broker) but have no idea how to implement these. i also just bought mathematica recently and so wish to obtain some suggestions from you guys. is this task something to... 1 Aug 2010 05:08
Subscript in AxesLabel Hi, Please teach me to put subscript in AxesLabel. I have 3D plot command ListPlot3D[..., AxesLabel->{}]. I want label to look like in LaTeX "u_k(x_1(s),t)" but I receive only various error messages when I try to put this to Mathematica. Many thanks for help in advance. Best regards, A. S. ... 25 Jul 2010 02:17
Manipulation Problem Dear Members, The following code is ok but when I use Manipulate command, I can't stop evaluation... ---------------- (*Firstly, we generate a random initial populations for our units, let's say cities*) list = RandomInteger[{100, 5000}, 20(*# of cities*)]; For[ (*Let's indicate # of steps; fragmentati... 23 Jul 2010 08:04 |