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1
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2answers
71 views

replace two elements in a list with the sum of those two elements?

I have a list: G[3] = {2, 4, 2, 4, 2, 4, 2, 4, 2, 4} (there's a 3 in there for the 3rd Prime) Recursively defined by: ...
2
votes
5answers
180 views

Is there a way to use Table[] without having to calculate my function twice?

I'm trying to use Table[] more to be more in the spirit of Mathematica. So for example, I might replace this piece of code: ...
4
votes
2answers
164 views

Selecting y-values from xy coordinate grid

Suppose I have a table, u, which is created as follows: ...
1
vote
3answers
84 views

Iterations with Table?

Is the following code efficient? Has it any advantages? s[0] = Sqrt[2]; Table[s[t + 1] = s[t]^2, {t, 0, 4}] {2, 4, 16, 256, 65536} Should be efficient in the ...
1
vote
1answer
73 views

Exclude Infinite Value in Table

I'm creating a plot of a family of lines using their endpoints and plotting it like so: Graphics[Line[Table[{{x1, y1}, {x2, y2}}, {u, 0, 2 \[Pi], ustep}]]] Where ...
1
vote
2answers
74 views

How do you (sanely) fix up data in a csv/table?

I have data in a CSV file I've Import[]ed. Some of the data needs fixing up - date formats changed, data normalized, etc. After fixing up I'll insert it into an SQL database. My CSV file has ...
0
votes
1answer
49 views

Table of central binomial coefficients [closed]

I'm trying to construct a table of pairs {n, N[Log[cb[n]]]} for n from 0 through 250, and make a list plot of the results. So far I have this: ...
0
votes
1answer
68 views

Applying natural log to a table of values [closed]

I know this is a simple question, but I am new to Mathematica. How do I go about natural log to a table of values? I tried this: ...
1
vote
2answers
82 views

Generating a table with two entries for each i

Disclaimer: I'm not a mathematica expert, I have some programming experience but am still learning how to work mathematica. Also, some of the code from the first block here is not my own, ...
2
votes
3answers
116 views
4
votes
2answers
126 views

Inferring interest rate of a loan from payment

Be patient with me since this is my first post here. I don't know how to use the Math notation. I wish to compute the interest rate for an existing loan given the original loan amount, length of ...
0
votes
2answers
84 views

Getting table headings when creating a table with two variables

I have created a table, and I want the variables that run through to create it, as the headings in their respective place. So when my table is created by variable ...
0
votes
1answer
64 views

Solving at zeroes of a matrix - code only works for simple equation

I have a matrix of zeroes (True) and non-zeroes (False). The matrix is generated from a table of values of two other variables. I'm trying to observe how the solution for p3 changes with small ...
1
vote
1answer
79 views

Why does one Monitor expression work while another fails?

I have a (somewhat involved) function f[x?NumericQ, y?NumericQ] and for some reason it behaves differently when given a Table ...
2
votes
1answer
145 views

Export CSV from tables

I am reading my csv which looks like: float,float,float,integer,boolean I read it with: ...
2
votes
1answer
82 views

Listplot x axis - Using tranpose of two tables?

I'm trying to augment the x axis of a listplot to fit the number of steps. Secondly, since there are a large number of steps (50), there will be 50 ticks which will make the graph messy. How do I get ...
2
votes
2answers
94 views

Problem with NumberForm when exporting

I have a two-part question regarding NumberForm First question In my attempt at answering this i stumbled upon a strange behavior by NumberForm when the final result is exported. Lets say I ...
5
votes
4answers
197 views

Getting the number of frequency in a list

I want to know how to make a tally board in a specific data appear in a list. E.G. n ={1,2,1,4,3,1,4,5,3,2,4,5,6,3,4,2,2,5,2} and get ...
5
votes
4answers
133 views

Syntax for Table with a pure function

I have: g = #1^2 + a #2^3 / #1 & Now I wish to make a Table evaluating this from 1 ...
4
votes
3answers
331 views

How to create a table?

I have looked here at the forum and on the mathematica documentation center though still couldn't get it to work. I have two lists ...
14
votes
3answers
1k views

WYSIWYG table creating and editing

In Microsoft Office OneNote 2010, creating and editing tables is easy. There are simple toolbar controls for creating tables: , and editing them once they exist: . My question is, what's an easy ...
0
votes
2answers
95 views

Replace $z$ with interpolated function and plotting

I start off with this equation $z(x,y) = sin(xy)$. I create an interpolation from $0 < x < 5$ and $0 < y < 5$. I then use this interpolation on a simple function $w(x,y) = x + y + z(x,y)$ ...
-2
votes
1answer
135 views

Creating a table giving the statistics of random polynomials [closed]

I already have a formula for generating random polynomials as well as for counting the real roots of every polynomial (see my previous question). But now I face the problem of how to organize the ...
5
votes
2answers
212 views
33
votes
6answers
2k views

How to visualize/edit a big matrix as a table?

Is it possible to visualize/edit a big matrix as a table ? I often end up exporting/copying big tables to Excel for seeing them, but I would prefer to stay in Mathematica and have a similar view as in ...
12
votes
4answers
578 views

Calling Table with custom iterator

I often find myself in situations where I, for example, need to build a table for some expression, but want to set the number of points rather then the step size, so the code ends up looking like this ...
1
vote
0answers
51 views

Problem with importing numbers resulting from an executed file in Mathematica [closed]

I am running Mathematica 10 and I have a mathematica file, MBdebug.m, that contains the line val = Import["! ./MBpart1ep0", "Table"]; MBpart1ep0 is an ...
0
votes
1answer
118 views

Importing Output from Linux mpstat to Calculate Aggregate and Per-CPU Averages, Creating Tables and Graphs

I'm a Mathematica noob, running a trial version for the moment, but have run into the wall trying to handle this in Excel and am looking for other options. While running a benchmark application I'm ...
1
vote
0answers
59 views

Make a table of changes in US coinage

I thought of an innovative use of Mathematica/Alpha that I think Stephen Wolfram would really love, but I can't figure out how to get it to work. The idea is to make a table that would chart the ...
3
votes
2answers
325 views

How to create a 'shortest-path link matrix'?

I am currently struggling with a problem in Mathematica. I have a randomly generated weighted Barabasi-Albert graph and a corresponding demand matrix of the same size. I'm generating the graph with ...
2
votes
2answers
142 views

How to initialize several elements per iteration with Table?

I would like to initialize this kind of vector : {0,0,1,1,0,1,0,1,1,1,1,1} with Table. I tried ...
3
votes
5answers
218 views

Creating a conditional table

I'm trying to create a conditional table. Let's say I want to have such result: {1,2,3,4,5,0,0,0,0,0}. The idea is to create a table of n elements (10 in a given example), but when one element takes ...
2
votes
1answer
103 views

Multiple plots using dynamics

I am studying Dynamic and DynamicModule, and I have tried to make a simple plot of a family of real functions. The number of functions should be a dynamic variable controlled by a slider. So I have ...
0
votes
1answer
68 views

Matrix consisting of the matrices [duplicate]

I need Dirac Matrix in my work. They consists of PauliMatrix and ZeroMatrix, which is: ZeroMatrix:=IdentityMatrix[2]-IdentityMatrix[2] I define Dirac Matrix as: ...
4
votes
3answers
230 views

Skipping over iterator values in a Table

I have been using the built-in function Table for some computations. (The following is not an actual representation of the equations I am using). ...
0
votes
1answer
43 views

Series not evaluating to numerical answer [closed]

I am working on an example from a book (An Engineer's Guide to Mathematica). The following code is in the book: ...
1
vote
0answers
140 views

How could I make an Excel-like table?

I am looking to build a simple Excel type of a table with four columns. I have spent some time researching Mathematica documentation, but haven't come across a way to implement that. Here is a ...
1
vote
2answers
100 views

Display Matrix of values with position [closed]

I want to find the table of values of $x^2 + y^2$ in steps of 1, from $0$ to $5$ for $x$ and $y$, together with the position $(x,y)$: something like this: I can only display the $x^2 + y^2$ value but ...
1
vote
3answers
227 views

Finding maximum value with position from Table of values

I have this table of values, how do I find the maximum value? i.e. find $z_{max}(x,y)$ ...
5
votes
3answers
245 views

TableForm with a title

My question is rather simple. I want to put a title into a table. For example, consider a list with depth two and a title ...
1
vote
2answers
57 views

TimeConstrained for Table?

Let's say that I have a function f[i] that takes quite a while to evaluate (evaluation time is different for different i) and I'd like to have as many values of ...
0
votes
0answers
124 views

Improving the speed of evaluating Table with nested functions

I am a Mathematica novice working with a stack of 1024 x 1024 WatershedComponents (or MorphologicalComponents) label matrices ...
2
votes
1answer
42 views

Can I use what “headerlines” removes from a CSV as TableHeadings for the table I create from that File?

I am reading in some data from a CSV file that has a line which gives titles to each "column". Here is an example: ...
5
votes
2answers
183 views

Table with multiple iterators running parallel

I want to use Table to generate a list, but it only allows one iterator to increment at a time. So in ...
0
votes
0answers
30 views

Generating a Table with a certian Density [duplicate]

How do I create a random table of 0's and 1's with a certain density instead of a probability? For Example: Manipulate[ Table[RandomChoice[{1 - density, density} -> {0, 1}, {10}]], ...
5
votes
5answers
219 views

How to make a table of $\sum_{i=1}^n$?

I want to create a table of $\displaystyle \sum_{i=1}^n i^k$ for $1\le k\le 5$. The output I want to obtain is a TeXForm output as follows. \begin{align} ...
2
votes
3answers
79 views

Reduction of repetitive calculations in Table

If I generate two tables inside a function which are function[n_, x_, y_]:=( table1 = Table[i* x/n^x, {i,1,n}]; table2 = Table[i* y/n^y, {i,1,n}]; ) where ...
0
votes
0answers
83 views

How to be faster at making a frequency list of increasing steps

I want to find propabilities of having a sequence in a list, by using frequencies. The case is that you will bet on an increase when the last event had an increased and bet on derease when the last ...
1
vote
0answers
62 views

Moving two Spheres in the Opposite Direction [closed]

We know that we can achieve to a box contained two spheres by the code: Graphics3D[Table[Sphere[{i, Mod[i^2, 10], Mod[i^3, 12]}], {i, 2}]] How can the left ...
1
vote
2answers
117 views

Problem with exporting lists to Excel

When I use the form Export["file", list, "Table"] to export a list to Excel, I get columns of lists. I want my Excel sheet to have each list element in a separate ...