Solved


What is the next step in Conway's Life?
Given a matrix A that represents the state of <http://en.wikipedia.org/wiki/Conway's_Game_of_Life Conway's game of Life> at one ...

3 månader ago

Solved


Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

3 månader ago

Submitted


Thermodynamics tool for H2O, H2, and CO2
Tool for effective thermodynamic calculations. Includes high-accuracy thermodynamic models for H2O, H2 and CO2.

4 månader ago | 15 downloads |

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Submitted


test_derivatives
Tool to verify that analytical derivatives are correct

4 månader ago | 1 download |

Answered
Fsolve don't work good with trigonometric
Your function has several different zeros. Which one fsolve finds will depend on the starting point. I ran: f = 100; while no...

4 månader ago | 0

Submitted


polyfix(x,y,n,xfix,yfix,xder,dydx)
Fit polynomial p to data, but match exactly at one or more points

4 månader ago | 45 downloads |

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Question


Help text does not work for user-defined functions
I just installed R2019b and the help function does not work. Example: I created the addme function from the Add Help for Your P...

4 månader ago | 2 answers | 1

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answers

Question


Is there a way to avoid repeating time-consuming calculations from odefun in the events function?
The right-hand side in my ODE is quite time-consuming. In the course of calculating dy/dt I calculate a variable u that I also u...

8 månader ago | 2 answers | 0

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Answered
First order ODE parameter fit to dataset
The challenge is how to use your table of temperatures in your updateStates function. At a given time t, you must interpolate y...

8 månader ago | 0

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Answered
How to calculate a curve for different variables?
Here is one way to do it. I have reduced the number of elements in your Time and V vectors in order to make a nicer surface plo...

10 månader ago | 0

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Answered
datetime default stetings 12/24
Use HH instead of hh for the hours: >> datetime.setDefaultFormats('default','hh:mm:ss yyyy-MM-dd') >> t = datetime(2019,8,10,...

10 månader ago | 4

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Answered
How to read a file containing non numerical characters and commas?
The 22 lines of text are easily dealt with using the 'HeaderLines' option. Next you must convert your strings to doubles. Below...

10 månader ago | 0

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Answered
Cell Array Dynamic Size
If you are happy with storing the data as a matrix for each sheet : filename = 'Q.xlsx'; n_sheets = 2; DP = cell(1,n_sheets);...

10 månader ago | 0

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Solved


Fill the matrix - 1
Input is a column vector and n. n columns will be added to the left of the input column. The first value of the row is the s...

11 månader ago

Answered
I have IgorTime data in which time:units = "seconds since 1904-01-01". I would like to convert this seconds to datevc.
First: Are you sure your T vector is in seconds? If so, your time list covers about 48 milliseconds around 01-Jan-1904 11:41:29....

11 månader ago | 1

Solved


Find the Final State of an Abelian Sandpile
Let us define an <http://nautil.us/issue/23/dominoes/the-amazing-autotuning-sandpile Abelian sand pile> as a matrix that is only...

12 månader ago

Solved


Data Regularization
Provided is an m-by-n integer data matrix A whose elements are drawn arbitrarily from a set *S* = [1,2,3,...,S] for any large in...

12 månader ago

Solved


Divide elements by sum of elements
In this problem, I ask you to write a function which will divide the elements of each column by the sum of the elements of the s...

12 månader ago

Answered
How to add headers to Excel.
filename = 'testdata.xlsx'; header = {'name', 'Age'}; A = [12.7;5.02;-98;63.9;0;-.2;56]; B= [12.7;5.02;-98;63.9;0;-.2;56]; c...

12 månader ago | 1

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Answered
Plot multivariable function,can't get the plot right ?
The main problem with your plot is simply that the large values of f for y > 0.5 dwarf the variations at lower values. Changing...

ungefär ett år ago | 1

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Answered
Matrix divison or calculating slope
There is a syntax error with your use of parentheses. Also, the slope for the last row is not defined. This should work: nro...

ungefär ett år ago | 0

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Answered
fitting a curve (3D) to pointcloud data
Assuming that the points are listed in sequence along your curve, you can express x, y, and z as functions of the (approximate) ...

ungefär ett år ago | 1

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Answered
Word Search Words Overlapping
I was fascinated by your problem, so I wrote my own version. This gave me some insights: I recommend that you first create an ...

ungefär ett år ago | 0

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How to find same element in txt file (in a coloumn) and find the amount for averaging the value of another coloumn ?
There may be more elegant ways to read the file, but I often prefer to use textscan to read a text file into a cell array of str...

ungefär ett år ago | 1

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Answered
Degrees-Minutes-Seconds Separation
It simplifies things if you use a doubke quote (") instead of two single qotes ('') to denote seconds. I enclose the modified ...

ungefär ett år ago | 0

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Answered
reading a txt file with rows of different length
fid = fopen(filename); lines = textscan(fid,'%s','delimiter','\n'); fclose(fid); lines = lines{1}; % The points data are in ...

mer än ett år ago | 2

Answered
Reading data row by row into matlab.
I often find it useful to read the file into a cell array of strings using textscan. Then I can easily experiment with how to b...

mer än ett år ago | 0

Answered
Reading CSV files in a sequence based on numeric value in file name
d = dir('*.csv'); filenames = {}; index = 0; k = 0; for i = 1:length(d) % Using regexp with lookaround on the file name t...

mer än ett år ago | 0

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Answered
How to index a random matrix with set conditions?
For a list of the negative values: negM = M(M<0) For the indices of the negative values: [i,j] = find(M<0) To display only t...

mer än ett år ago | 1

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Answered
How to identify points that are located in a polygon when this polygon passes through the meridian?
It seems that you are using the mapping toolbox, Then you can use ingeoquad: ingeoquad([35,45],[0,10],[30 40], [355 5]) Your ...

mer än ett år ago | 2

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