Community Profile

photo

Walter Roberson


Last seen: Today
48,697 2011 이후 총 참여 횟수

I do not do free private consulting. If you want to bring my attention to something, send a link to the MATLAB Answers location.

담당자

Walter Roberson's 배지

  • Roberson Cup
  • Most Accepted 2019
  • Most Accepted 2018
  • Solver
  • First Review
  • Most Accepted 2017
  • 36 Month Streak
  • Most Accepted 2016
  • Most Accepted 2015
  • Most Accepted 2011
  • Most Accepted 2012
  • Most Accepted 2013
  • Thankful Level 4
  • Grand Master
  • Revival Level 4

모두 보기

참여 게시물
보기 기준

답변 있음
How Can I Pull A Specific Variable From The Determinant of Matrix?
You have no realistic chance of calculating one variable in terms of the other symbolically. Your function involves the first tw...

약 6시간 전 | 0

답변 있음
How to combine the using of meshgrid and surface?
x = linspace(0,.1); y = linspace(.3, .4); [X, Y] = meshgrid(x, y); Z = X.^2 - 5.*Y.^3 + sin(5*2*pi*X); surf(X, Y, Z, 'edgeco...

약 12시간 전 | 0

| 수락됨

답변 있음
Get rid of unnecessary space in output of full(A)
disp(num2str(full(A))) You can add a format specifier to num2str() to be more specific about widths.

약 12시간 전 | 0

답변 있음
Merge data by date
Convert your data to a timetable() object, and use retime() to consolidate the information.

약 12시간 전 | 0

| 수락됨

답변 있음
Can I pcolor base on wavelength, any colormap can do so?
When you pcolor(X,Y,I) then the I data will be used to decide which color information is used. By default, the numerically lowes...

약 12시간 전 | 0

답변 있음
How to: write .xls into a dynamic folder name ?
folder = [Answer{1},' ',Answer{2},' ',num2str(Answer{3})]; if ~exist(folder, 'dir'); mkdir(folder); end filename = 'patient_...

약 13시간 전 | 0

| 수락됨

답변 있음
How to run continuously
current_state = 0; writeDigitalPin(a,'D2',current_state); while true if readVoltage(a, 'A1') >= 2 if current_s...

약 14시간 전 | 0

| 수락됨

답변 있음
how to solve the error "Not enough input arguments."
You are pressing the green Run button to run the code. Don't Do That. Go down to the command line and command alpham(18.35) al...

약 17시간 전 | 0

답변 있음
[THIS QUESTION HAS BEEN REDACTED]
function [T_mp,rho,cp,k,alpha] = Material_Properties(MN) T_mp_vec = [1406 2192 693 2125]'; rho_vec = [19070 6100 7140 6570]'; ...

약 17시간 전 | 0

| 수락됨

답변 있음
rotating a matrix without interpolation
When you rotate a matrix, then the only pixels that can be calculated without any interpolation are the ones whose coordinates a...

약 17시간 전 | 1

답변 있음
Using size on a data file, etc... Could someone explain what each step here does exactly?
importdata() in some circumstances returns a struct that has a field named data that holds whatever importdata() decided was num...

약 18시간 전 | 0

답변 있음
Adding accents to the live scripts
That feature was not supported until R2019a.

약 18시간 전 | 0

| 수락됨

답변 있음
Is there a way to remove the Column titles when using format longg?
disp(num2str(YourMatrix))

약 18시간 전 | 1

| 수락됨

답변 있음
How to add a newline after a certain number of characters
while number of remaining characters > n remove and record the first n characters add them and newline to output end ...

약 19시간 전 | 0

답변 있음
download part of ascii file
k=dlmread('11032020_2020-11-25_17-40-55_m1.ascii', ' ',[585 3 1457 4]) asks it to skip 3 columns and that the reading should pr...

약 19시간 전 | 0

답변 있음
Readtable function on Matlab
Unable to find or open 'Task3.xlsx' Task3.xlsx is not in your current directory, and not in any directory that is on the MATLAB...

약 20시간 전 | 0

답변 있음
`integral` function: "Output of the function must be same size as input" error
integral() will call the given function with a vector of values, and the function must return one value for each element in the ...

약 20시간 전 | 0

| 수락됨

답변 있음
extracting from a matrix
XY_indx = [ 1 1 1 2 1 2 1 2 3 2 2 4 1 1 5 2 1 ...

약 22시간 전 | 0

| 수락됨

답변 있음
How to solve a symbolic angle for an equation without complex numbers
You can use vpasolve() with range [-inf inf] Caution: if you copy this code back, fix the entry for D back to use input()... t...

약 23시간 전 | 0

답변 있음
Can a Matlab figure window display 4k video feed at 30FPS?
There might potentially be some system in which MATLAB could keep up with that, such as with a high performance graphic card and...

1일 전 | 1

답변 있음
Is there a way to store original structs in a cell array?
When you ask to get(app.Spinner) you are asking for the public properties of app.Spinner to be fetched. Most object properties a...

1일 전 | 0

| 수락됨

답변 있음
Matlab Simulink RepMat Execution Time
persistent idx11 if isempty(idx11) idx11 = ones(1,11); end y = u(:, idx11) ;

1일 전 | 0

답변 있음
Unable to filter data with a for loop and replace command
replace() is a text processing function. You cannot use it to delete numeric values. AAA = AA(AA ~= 0); or in this particular ...

1일 전 | 0

| 수락됨

답변 있음
possible to use the terminal command in matlab script?
You can use I/O redirection. However, if you need two-way interaction then you need a pipe. There is a popen() in the File Exch...

1일 전 | 0

답변 있음
Why do i get decimal on my final answer?
Give the command format long g and now ask to display the answers again.

1일 전 | 3

| 수락됨

답변 있음
Decimal places for value stored
how can i make the value of f(x), f(x+h) and f(x-h) to be only up to 4 decimal places when calculating for f2_prime? You would ...

1일 전 | 0

답변 있음
Using the function command to open a .txt file
function total_mail=AllMail(filename) q = dlmread(filename) and somewhere you would need to invoke the function with a file na...

1일 전 | 0

| 수락됨

답변 있음
when i try to run mean function
No, that error literally cannot happen with the code you posted. In your previous question, you posted an error that can only o...

1일 전 | 0

답변 있음
when i tried run something from excel it shows error?
Ftrain = Data(1:990, :); Ftest = Data(991:1000, :); Note that this will return the same datatype that Data is -- if Data is a ...

1일 전 | 1

Load more