# Jesus Sanchez

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**Content Feed**

Question

Obtain filter x,y points (Designed with notchfilt)

Hello everyone, I am trying to do some Mean Square Error between a signal that I measured and the "ideal" shape of it, which co...

2 years ago | 1 answer | 0

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answerQuestion

integral2 failing to calculate area of a square inside a circle?

Hello all, I am integrating the area contained within a square and a circle using integral2. I use a circle centered at (0,0) w...

2 years ago | 1 answer | 0

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answerwhy plot result is different from fplot's

Problem solved. The problem here is the value of n. Since you wrote that n = 600, the resulting number is too big for the comput...

3 years ago | 1

| accepted

why plot result is different from fplot's

For plot, you wrote that x is defined between -pi and pi. For fplot, you can see the reason in its reference page fplot(f) plo...

3 years ago | 0

Simple version of creating a matrix

One possibility is to concatenate them at the same time that they are created using zeros and ones. So something like this: Aeq...

3 years ago | 1

Need help on usage of s-parameters

This toolbox comes with an Sparameters reader. What do you mean with "the impulse response"? S parameters already give insight a...

3 years ago | 0

S-parameter to Y-parameter

Check this toolbox, it does usual transformations between these kind of parameters

3 years ago | 0

Savig a workspace file..

Without the code, we cannot do much. However, for the save I think that you are not wrting the variable name as a string. See Sa...

3 years ago | 0

| accepted

Save multiple functions on a single vector

One possibility is to work with them as vectors and then unite them in one matrix. everyDay = 10; % N out1 = zeros(everyDay,...

3 years ago | 0

Getting array out of for loop

Treat p_out as a vector and you will be fine: for i = 1:length(n) % for loop for iteration of n times p_out(i) = p_in * ...

3 years ago | 0

saving data during iterations

It seems that you are overwriting y in each iteration. Being that the case, I would create a matrix stored_y to save the values ...

3 years ago | 0

| accepted

Delete duplicate data rows from cell array

From this previous question A = [1 1 2 2 3 3 3]; [U, I] = unique(A, 'first'); x = 1:length(A); x(I) = []; Therefore in your...

3 years ago | 0

confusing regarding two cases of multiplication in MATLAB?

".*" -> Element-wise multiplication Example: [1 2 3].*[1 2 3] = [1*1 2*2 3*3] = [1 4 9] "*" -> Matrix multiplication Exampl...

3 years ago | 1

| accepted

How to store values in a loop?

Just fill them like they are vectors. MATLAB can add new "cells" to each vector on the fly, or you can pre-define them for speed...

3 years ago | 0

| accepted

Plotting a continuous line from separate data files

Combine all of them in one vector before plotting. If they are line-vectors: x_data = [x1 , x2 , x3 ... x9]; y_data = [y1 , y2...

3 years ago | 0

| accepted

how should I correctly use findpeaks() so that the output will not show me the following error

Data is a matrix of Nx2. You just need to select which vector you want to use to search for the peaks. I guess is the second o...

3 years ago | 0

| accepted

Easiest way to skip a few lines and then read data from this text file ( x and y) to draw a plot.

From yout MATLAB: Home -> Variable -> Import data. From there you can also create a function that will allow you to import futu...

3 years ago | 0

Ascending table column labels

I would do it inside a for loop: matrix = [1 2 3; 3 4 5; 6 4 5; 9 8 7]; % 4 rows and 3 columns colnames = {}; % Initializes co...

3 years ago | 0

using google on matlab web browser

You need to generate the complete url from matlab and then pass that to web(url). After a brief testing, the format for google s...

3 years ago | 0

| accepted

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

4 years ago

fprintf- I dont want to print one result.

clear clc x= input ('Enter x: '); %Degree of reaction to the virus from a blood test. showHours = 1; if x==0 disp ('Ne...

4 years ago | 1

| accepted

Submitted

createArchimedeanSolid

Creates required Archimedean solid with desired edge length a centered at origin.

4 years ago | 1 download |

how to find x if i only know y?

As you are working with degrees, I consider that you want to have natural numbers as a result, not something like 5.0358 degrees...

4 years ago | 0

| accepted

Joining 2 tables to make 1 table

You can unite them as if they were matrixes: complete_table = [table1 ; table2]; % This should work to join the columns of both...

4 years ago | 0

| accepted

For loop nested plotting

Use a if-else expression: if current_iteration == 10 plot(T,cost) end

4 years ago | 0

| accepted

Unable to convert expression into double array.

Your problem is that you did not assign numerical values to your sym variables. Therefore, when you do double(sym_variable), mat...

4 years ago | 0

Question

Archimedean solids in MATLAB

Hello all, I have been looking for a toolbox or file exchange that generates or gives back the vertices of the 14 archimedean s...

4 years ago | 1 answer | 0

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answerQuestion

Print user-defined error messages as a table

Hello all, I would like to display an error message that informs the user of a function of the options that he has avaliable....

4 years ago | 1 answer | 0

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answerUndefined function 'addElement' for input arguments of type 'cell'.

Check the value of "verso". If it is not a number, the conversion from cell to double using "double(...)" does not work. This mi...

4 years ago | 0