Answered

Can you use replace to remove all characters that aren't letters from a string?

Try str = 'I; love123 you-+'; str_new = regexprep(str,'[^a-zA-Z\s]','');

Can you use replace to remove all characters that aren't letters from a string?

Try str = 'I; love123 you-+'; str_new = regexprep(str,'[^a-zA-Z\s]','');

5 månader ago | 0

Answered

Need help with an if loop

First, exp(x) has an expansion as follows: Now, how to define infinity? When , . So, we check if ...

Need help with an if loop

First, exp(x) has an expansion as follows: Now, how to define infinity? When , . So, we check if ...

6 månader ago | 0

Answered

Replace specific line in a text file

One of the way could be: fid = fopen('data.dat','r'); % Open File to read replaceline = 'act= 1,0,8,-2'; % Line to...

Replace specific line in a text file

One of the way could be: fid = fopen('data.dat','r'); % Open File to read replaceline = 'act= 1,0,8,-2'; % Line to...

6 månader ago | 0

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Answered

compare between element of matrix in different size

To check if there is any common element between 2 vectors, you may consider using 'intersect()'. So, your if condition becomes: ...

compare between element of matrix in different size

To check if there is any common element between 2 vectors, you may consider using 'intersect()'. So, your if condition becomes: ...

6 månader ago | 0

Answered

problem in 3d figure plotting

one of the several ways could be: fill3(X,Y,Z,'b') I hope it helps !

problem in 3d figure plotting

one of the several ways could be: fill3(X,Y,Z,'b') I hope it helps !

6 månader ago | 0

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Answered

Plotting 3D Intersection

I am not sure how you actually want to plot these values. But one of the way I could think of plotting this data is by using B3:...

Plotting 3D Intersection

I am not sure how you actually want to plot these values. But one of the way I could think of plotting this data is by using B3:...

6 månader ago | 0

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Answered

how to over come vector mismatch error in plot

You can try : tp=2.2676*10^-3; Ts=22.6757*10^-6; n=0:Ts:100; fp=(1/tp); w=2*pi*fp; p=sin(w*n*Ts); p(find(p<0))=0; data =...

how to over come vector mismatch error in plot

You can try : tp=2.2676*10^-3; Ts=22.6757*10^-6; n=0:Ts:100; fp=(1/tp); w=2*pi*fp; p=sin(w*n*Ts); p(find(p<0))=0; data =...

6 månader ago | 0

Answered

how do i print the 10 figures seprately ?

Try: clear;clc M = rand(1000,10); M = cos(2*pi*M); for c = 1:size(M,2) figure(c) hist(M(:,c)) title(num2str(...

how do i print the 10 figures seprately ?

Try: clear;clc M = rand(1000,10); M = cos(2*pi*M); for c = 1:size(M,2) figure(c) hist(M(:,c)) title(num2str(...

6 månader ago | 0

Answered

How do you graph a function that refers to the function in its value?

MATLAB doesn't allow 0 as an index. Infact, index must be a natural number. y(0) % is an invalid index because 0 y(0.5) % is ...

How do you graph a function that refers to the function in its value?

MATLAB doesn't allow 0 as an index. Infact, index must be a natural number. y(0) % is an invalid index because 0 y(0.5) % is ...

6 månader ago | 0

Answered

How to turn scatterplot labels on and off using uicontrol

Try the following method (it might work for you but there are some limitations) : x = rand(1,100); y = rand(1,100); pointsize =...

How to turn scatterplot labels on and off using uicontrol

Try the following method (it might work for you but there are some limitations) : x = rand(1,100); y = rand(1,100); pointsize =...

6 månader ago | 0

Answered

Why is matlab giving me a a very small number when the answer should be EXACTLY zero?

It must be something to do with the limitation of matrix multiplication and the computing error comes with the this type of mult...

Why is matlab giving me a a very small number when the answer should be EXACTLY zero?

It must be something to do with the limitation of matrix multiplication and the computing error comes with the this type of mult...

6 månader ago | 0

Answered

Create a new array on the basis of another array

Try: A = 100-V; A(A == max(A)) = 100;

Create a new array on the basis of another array

Try: A = 100-V; A(A == max(A)) = 100;

6 månader ago | 0

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Answered

how to delete cell rows ?

One of the way to do: cell_sizes = cellfun(@size,QDSCD,'UniformOutput',false); cell_sizes = vertcat(cell_sizes{:}); ind = fi...

how to delete cell rows ?

One of the way to do: cell_sizes = cellfun(@size,QDSCD,'UniformOutput',false); cell_sizes = vertcat(cell_sizes{:}); ind = fi...

6 månader ago | 0

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Answered

wirte in excel sheet.

So, in order to change row as you change the q, you have to change the range dynamically. row_num = 1; % you can change that u...

wirte in excel sheet.

So, in order to change row as you change the q, you have to change the range dynamically. row_num = 1; % you can change that u...

6 månader ago | 0

Answered

Changing the For LOOP conditions

One of the way to do this is define the for loop conditions using predefined vectors. You can write vector to set how the for l...

Changing the For LOOP conditions

One of the way to do this is define the for loop conditions using predefined vectors. You can write vector to set how the for l...

6 månader ago | 0

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Answered

How to enter subscripts in matlab? for a loop

Simply shift your indeces by 1 i.e. x0 becomes x1, x1 becomes x2 and so on. N = 500; x = zeros(N+1,1); x0 = 1; x(0+1) = x0;...

How to enter subscripts in matlab? for a loop

Simply shift your indeces by 1 i.e. x0 becomes x1, x1 becomes x2 and so on. N = 500; x = zeros(N+1,1); x0 = 1; x(0+1) = x0;...

6 månader ago | 0

Solved

Word Counting and Indexing

You are given a list of strings, each being a list of words divided by spaces. Break the strings into words, then return a maste...

6 månader ago

Solved

Knight's Tour Checker

Given a matrix a, determine whether or not a legal <http://en.wikipedia.org/wiki/Knight's_tour knight's tour> is present. The kn...

6 månader ago

Solved

Volume of a box

Given a box with a length a, width b, and height c. Solve the volume of the box.

6 månader ago

Solved

sum of first 'n' terms

Given n=10, find the sum of first 'n' terms Example: If n=10, then x=1,2,3,4,5,6,7,8,9,10. The sum of these n=10 terms is 55...

6 månader ago

Solved

05 - Vector Equations 3

Define the vector _dVec_: <<http://samle.dk/STTBDP/Assignment1_2d.png>> (Logarithmically spaced numbers between 1 and 10) ...

6 månader ago

Solved

Implement simple rotation cypher

If given a letter from the set: [abc...xyz] and a shift, implement a shift cypher. Example: 'abc' with a shi...

6 månader ago

Solved

07 - Common functions and indexing 3

Define _eMat_: <<http://samle.dk/STTBDP/Assignment1_3e.png>> Create the variable _eMat2_, which is equal to _eMat_ with th...

6 månader ago

Solved

Check that number is whole number

Check that number is whole number Say x=15, then answer is 1. x=15.2 , then answer is 0. <http://en.wikipedia.org/wiki/Whole...

6 månader ago

Solved

Reverse the vector

Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

6 månader ago

Answered

Array indices must be positive integers or logical values.

y(0) = 1; % y(i) = k; i must be a natural number Not allowed in MATLAB. Instead write y(1) = 1;

Array indices must be positive integers or logical values.

y(0) = 1; % y(i) = k; i must be a natural number Not allowed in MATLAB. Instead write y(1) = 1;

6 månader ago | 0

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Answered

Why does my function keep returning zero?

Replace K1 = A1*exp(-(E1/R*T)); by K1 = A1*exp(-(E1/(R*T))); ans subsequently for K2 & K3 too.

Why does my function keep returning zero?

Replace K1 = A1*exp(-(E1/R*T)); by K1 = A1*exp(-(E1/(R*T))); ans subsequently for K2 & K3 too.

6 månader ago | 0

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Answered

How to find acceleration from velocity and time data ?

Assuming you have exported velocity data from the csv file using xlsread or something and saved it in a variable, say, 'vel'. To...

How to find acceleration from velocity and time data ?

Assuming you have exported velocity data from the csv file using xlsread or something and saved it in a variable, say, 'vel'. To...

6 månader ago | 1

Answered

How can I write data to excel without overwrite data that already in the excel ?

To write in the empty rows, you have to specify that to xlswrite. So, either you know the row number beforehand and use that 'xl...

How can I write data to excel without overwrite data that already in the excel ?

To write in the empty rows, you have to specify that to xlswrite. So, either you know the row number beforehand and use that 'xl...

6 månader ago | 1

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