Community Profile

photo

Robert U


200 total contributions since 2016

Robert U's Badges

  • Revival Level 2
  • Knowledgeable Level 3
  • 6 Month Streak
  • Cody Challenge Master
  • Solver
  • First Answer

View details...

Contributions in
View by

Answered
lsim: Remove input signal from plot
Hi cricketking13, if you don't want to have lsim plot the default plot, just "collect" the output and plot as you desire: %% L...

7 días ago | 0

| accepted

Answered
Whiteout/Remove some part of the contour plot
Hi Muhammad Usman, instead of assigning Zero to the nodes you don't want to use, apply "nan"-Values. That will be treated as if...

9 días ago | 2

| accepted

Answered
How can I write this code in matlab and have it run? ( all variables have been defined but it keeps giving me an error on this line)
Hi Adam Sabah, when I run your code I get this error message: ue = 1-4*sin((3*pi*x)/(2*L))*exp(-tmax(A/B))+4*sin((7*pi*x)/(2*L...

11 días ago | 0

Answered
Concatenate cell with numeric array in tables
Hi Marcus Watson, an straight-forward solution would be checking the variable types stored in the table. In case they don't mat...

16 días ago | 0

| accepted

Answered
How to get rid of Nan when calculating mean
Hi Emmanuel Gonzalez-Figueroa, The function mean() commes with a so-called nanflag: https://de.mathworks.com/help/matlab/ref/me...

22 días ago | 1

| accepted

Answered
'String scalar or character vector must have valid interpreter syntax:' for Sigma
Hi Yaser Khojah, I found the following description in the documentation of corrplot(): "Variable names to be used in the plots...

22 días ago | 0

| accepted

Answered
Summation issue using loop
Hi Ali aaa, in your code parts are missing. Without knowing any constraints about the variables, I suggest the following soluti...

26 días ago | 0

Answered
How to open files with similar names
Hi Carlo Speranza, first of all, get rid of the eval()-command. That is usually not needed, difficult to debug and prone to err...

28 días ago | 0

Answered
Filtering a region of Interest
Hi Oreoluwa ADESINA, What you describe is part of the example shown in the roifilt2-documentation found here: https://de.mathwo...

28 días ago | 0

| accepted

Answered
How do I get the row numbers of the 'list' where the values are equal to the values of the array 'days'
Hi Yannick Leroy, the function ismember() allows to compare matrices with vector elements. The function find() supplies the ind...

29 días ago | 0

| accepted

Answered
Cell to array of strings
Hi Liam Ryan, what you describe is not a cell array of strings but char. You can convert it straightforward by applying string(...

29 días ago | 0

Answered
Adding Hexadecimal numbers?
Hi Jed Louise Lesma, Despite the extra bracket in your code (I removed it), the method you tried should work: a = '3afb'; b =...

29 días ago | 1

| accepted

Answered
Radio Button Group not working
Hi Mo Jay, The default Units property is 'normalized'. Your button group is outside the visible area. GUI.fh = figure; %Butto...

alrededor de 1 mes ago | 0

| accepted

Answered
Can't plot reference line in pcolor-plot with logarithmic y-axis
Hi TIm Hilt, the problem is that on logarithmic scale zero is not defined thus your line does not have a valid starting point (...

alrededor de 1 mes ago | 0

| accepted

Answered
Break a while loop in a GUI Pushbutton
Hi MINKYUNG KIM, below you find an example for breaking a while loop within a pushbutton controlled GUI. The data exchange is d...

alrededor de 1 mes ago | 1

| accepted

Answered
Separating and reprinting a big string
Hi bws1007: The string to write needs to be scalar. The command fwrite() is used to write into binary format, thus it does not ...

alrededor de 2 meses ago | 0

| accepted

Answered
Linear scale to Log scale in CWT
Hi Raviteja, the command cwt() allows to use the output matrix of the wavelet transform to produce your own plots. One possibil...

alrededor de 2 meses ago | 0

Answered
Get frequency value from the Continuous Wavelet Transform
Hi Angus Joyce: You did not provide any data, thus I could not work on your example. The mathworks example files for wavelet tr...

alrededor de 2 meses ago | 1

| accepted

Answered
Integrate for a specific period of time
Hi Allison, you can use one of Matlab's integrated ODE solvers to solve your differential equation. The code below makes use of...

2 meses ago | 0

Answered
This how i want the plot to be
Hi idowu Abdul-Semiu, There are several plot-commands that support the image you are showing. Have a look for the following com...

2 meses ago | 0

Answered
Find rows in matrix based on columns value
Hi Steward Tan, in the given matrix there is no single column that contains the values 10 AND 11. If you want to find the rows ...

2 meses ago | 1

| accepted

Answered
Eliminate algebraic loop without using memory block
Hi Boru Wang, there is an article about "Remove Algebraic Loops" in the Matlab documentation: https://de.mathworks.com/help/sim...

3 meses ago | 0

Answered
How to filter a signal?
Hi Bandw W, if you would like to simulate the output you can use lsim(): %% filter signal % create system myFilter = tf(num1...

3 meses ago | 0

Answered
Find the minimum of a function and use it to plot a graph.
Hi JACINTA ONWUKA, I do not know what you expect as output. The graph you are trying to plot is produced with every iteration. ...

4 meses ago | 0

Answered
How to get different colours for different regions for this problem
Hi pallav pal, one example patch as requested. All others can be drawn accordingly. x1=0:.00001:1; x2=0:.00001:.334; y1=x1...

5 meses ago | 0

| accepted

Answered
How to implement an adder without using adder block in Simulink
Hello Gowtham Gowda, my suggestion would be to use the implementation of a full adder which performs bitwise logical operations...

6 meses ago | 0

Answered
Weird answer for function when dividing two fractions
Hi Katy Soto, type the following to command line to prevent Matlab from shortening output: format long g Then output of your ...

7 meses ago | 0

| accepted

Answered
Adjust the phase offset when using data from 'bode'
Hi Romain Liechti, if you want - as you write - stick to the bode output you should correct the phase by a reference phase shif...

8 meses ago | 0

| accepted

Answered
Adjust the phase offset when using data from 'bode'
Hi Romain Liechti, in order to customize the frequency response plot you could use bodeplot() instead of bode(). There, you can...

8 meses ago | 0

Answered
How to use the Levenberg-Marquardt algorithm to fitting data and get the first derivative?
Hi Nelson Saraiva, The Levenberg-Marquardt algorithm is already ready-to-use implemented into optimization toolbox: https://de....

9 meses ago | 0

Load more