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Is it possible to export to .xlsx with table headings?
Hi, I recently tried to export a matrix with headings as a .xlsx file. However when I opened the file, I noticed that my headings were missing. Is it possible to export with headings? I've check online and come up empty as to why mine went away. Thanks,
Error regarding Combinatorca
Hello... I'm new to Mathematica and just started to work with the trial version of Mathematica. I get an error like "Get::noopen: Cannot open DiscreteMath`Combinatorica`. >>" when I'm including
How to eliminate a trigonometric function between the equations?
Dear All, I have an equation Cos[2 x] == 0 and I want to get Mathematica to substitute the "a" for Cos[ x ] the equation should get the form 2*a^2-1==0 eqn = {Cos[2 x] == 0, Cos[ x ] == a} Eliminate[eqn, x] doesn't work. Do anybody have any idea how to do it? Thanks!
Financial indicator
Hi Everyone How can i extract numerical values from "FinancialIndicator" plot - for example -"UltimateOscillator" and display these values as list ? is an option in graphic allows such thing ? Thank you for any suggestion
How to include calculations in a loop (Do,Nest,Table,...others)?
Since I am not very familiar how to make calculations within a loop I look for possibilities (Do,Nest,Table,others?) for that example: Intilial t is: d[0]=7;Then: 1. Calculate aa=d[t]+2; 2. Find root of b: [mcode]b = Exp[x^2] - a == x Sqrt[\[Pi]] FRoo = FindRoot[b, {x,...
Plot the solution of numerical solution of 3 dimension on sphere surface
I have a problem in making a graph on sphere surface. I get the solution from numerical simulation and it shows the solution is written in interpolation function. let`s say the funtion is X(t,x,y,z). What I would like to do is to make a graph this function on sphere surface. Please tell me weather...
Converting '2.345e-17' strings into numbers while importing a CSV file?
Hi all, suppose we have a list of number pairs like this (first 11 lines of a .txt file):0,3E-14 0.001,-7E-14 0.002,-4E-14 0.003,2.9E-13 0.004,3.1000000000000004E-13 0.005,1.2E-13 0.006,2.3E-13 0.007,-7E-14 0.008,1.1000000000000001E-13 0.0090000000000000011,1E-14 0.01,4E-14 ...
circle and line
Hello Everyone, I had asked a question a few days ago, thanks for the answers. Now I need to improve this code. I have to draw a circle at only 24 different points like this: [mcode]x1[\[Psi]_] := Cos[\[Psi]] y1[\[Psi]_] := Sin[\[Psi]] Show[Graphics[ Table[Point[{x1[\[Psi]], y1[\[Psi]]}],...
Can I extract .WAV audio from a .MOV video file?
I have a 99 minute and 43second .MOV video in ProRes422 720p format which I imported into MathematicaImport["E:\\3180\\3180HDV720p.mov"] The output I got was the following array with 358651 elements.Out[] = {1,2,3, … 358649,358650,358651} I hope to be able to extract...
Reverse engineering of complicated expressions
In Mathematica, everything is said to be an expression. As one becomes more proficient in this language, there is a natural tendency to construct expressions of ever-increasing size and complexity. Beyond that, in seeking to understand the Mathematica constructions of others, one can...
Help me -- meprec problem
I have been stuck here for almost two weeks! My input is too big and my Mathematica can't run the program fully, yet the result is not the one that I want. can someone help me? I inserted this kind of precision code and already play around with the coding. [mcode]Block[{$MaxExtraPrecision = 5000},...
Solving a table of data for z = f(x,y)
I do have a table of data. Lets say 20 rows by 20 columns as a sheet of data on X- and Y-values Now, I try to find a formula which describes the function for Z, using the table of X,Y-values. Is there a way in Wolfram Alpha to search for the formula?
Dialogs and Dynamic
Initialize global list of {string, number} pairsmain = {{"apple", 1}, {"banana", 2}, {"carrot", 3},{"donut", 4}Function to edit item number j from the listEditItem[j_] := Module[{tx, nm}, tx = main[[j]][[1]]; nm = main[[j]][[2]];[mcode] ...
Animation won't show moving lines, only their endpoints
Hi there, I'm working on a dynamics project modeling a trebuchet in Mathematica. In the final output stage, I can't get my animation to actually draw the Graphics Line object properly. It only displays the endpoints of the line. Changing the style of the line only changes the points. Static...
How to show mean and standard deviation of list as normal distribution
Hi, I am wondering how I would view the following list as a Gaussian Distribution, where I could identify the mean and 2 s.d. of the list on the PDF Plot? I've tried EmpiricalDistribution, but this does not seem to be the right approach for the Gaussian Distribution. Any Suggestions? [mcode]list1 =...
How do I run programs from Mathematica 5 or 6 in Mathematica 9 ??
I want to run some programs written in Mathematica 5 and 6 using Mathematica 9 or 10. Some DSolve functions don't work in 9 or 10 but do in 6 (if written in 6). Are there legacy packages for 9 or 10? This is from "Computer Solutions in Physics" by Steve VanWyk, Chapter 4.5 [mcode]Clear[r,y];...
TableCurrent with WSMLink
Hi I am trying to use the TableCurrent block in SystemModeler with WSMLink. The idea is to define a current profine in Mathematica and then use it to trigger the simulation in SystemModeler. Has anyone done this successfully? I cannot assign the table of values inside Mathematica. ...
SystemModeler Failed to reduce the DAE index. What do I do now?
I'm trying out the features of systemmodeler so I thought I would try to model a system a lot of people (especially in the UK) are familar with, a central heating system. The concept is simple: a heat source (gas flame etc.) transfers heat to water which circulates through the syetem and...
Particle Filter
Hi, everyone! I was unable to find any particle filtering example implementated in Mathematica. In other software packages it requires hundreds of lines of code, so I was just wondering if there are ways/shortcuts to do it easier here? If there are no examples, then let's implement one...
plot a circle at seperate points
Hello Everyone, I am trying to plot a circle, I wrote a code like this:x1[\[Psi]_] := Cos[\[Psi]] y1[\[Psi]_] := Sin[\[Psi]] When I want to plot a circle, I am using parametric plot ParametricPlot[{x1[\[Psi]], y1[\[Psi]]}, {\[Psi], 0, 2 Pi}]However I don't want all...
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