Robert U
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MATLAB Central Community 20 Year Anniversary Treasure Hunt participant badge
Awarded to Robert U on 24 Sep 2021
Contribute at least one answer each month for 12 consecutive months
Awarded to Robert U on 03 Apr 2020
Answer 3 questions that were unanswered for more than 30 days
Awarded to Robert U on 25 Sep 2019
20 of your answers have been accepted
Awarded to Robert U on 16 Jan 2019
Solve all the problems in Cody Challenge
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Content Feed
Merge two .fig figures side by side by connecting yaxes in matlab
Hi Apashanka Das, you can copy objects from figure to figure using copyobj(). A bit tricky is to write a generally working code...
3 mesi ago | 0
| accepted
How to find the error between two plots and plot the error in same diagram
Hi Abdul Sajeed Mohammed, here some example that is close to what you do: % example data params (circular trajectory) R = 100...
3 mesi ago | 0
| accepted
Finding root using Fixed point method
Hi Aryan Efty Sham, Have a look in the community forum. The method has been discussed several times already, e.g. https://de.ma...
3 mesi ago | 0
Replace a syms command
Hi Sarah Gomez, I am not quite sure whether I understood you question correctly, but removing the syms j command is not suffici...
3 mesi ago | 0
How do I plot an equation with multiple Iterations.
Hi Heather Worth, you can store x1 each iteration in a vector and plot the vector at the end of the calculation. lambda=6.544;...
3 mesi ago | 0
How to display a number in a scientific notation in the plot?
Hi Vikash Pandey, have a look at the function num2eng from Mathworks File Exchange. You can change easily the tick label: fh =...
4 mesi ago | 0
How can I change a pixel image from black and white to red & blue
Hi Yik lok Chan, one way to do so is to utilize colormap()-command: corn_gray = imread('corn.tif',3); imshow(corn_gray) ...
6 mesi ago | 0
How to give a piecewise function as input
Hi Mehul kumar, Please, have a look here: https://de.mathworks.com/matlabcentral/answers/359268-making-ramp-and-unit-step-funct...
6 mesi ago | 0
save rows from an array
Hi samuel herrera, I guess, you would like to store the content of the cell array vo in vp1 and vp2, respectively. You have to ...
6 mesi ago | 0
Unintended plot while using the cylinder function
Hi Kevin Hanekom, it seems your vector PStress has two colums which are both interpreted as radius by the function cylinder and...
7 mesi ago | 0
| accepted
Solved
The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...
8 mesi ago
Using symbolic variables, how do you expand polynomials to show complex roots in an equation
Hi bob, I guess it's a transfer function and you are looking for poles and zeros. syms s Num = 10^4*(s+5)*(s+70); Den = s*(s...
8 mesi ago | 0
| accepted
multiple graphs in one script
Hi basim almutairi, Simplify your life and use handles (start here: graphics-objects): figure handles, axes handles, ... Handl...
8 mesi ago | 0
I don't know how to avoid eval
Hi Wan Ji, you can use cell-arrays. You don't need to assign variables with different names to multiple outputs. function p = ...
9 mesi ago | 2
| accepted
How to set common colorbar for multiplots?
Hi UTKARSH VERMA, have a look at caxis(): [x, y] = meshgrid(0:0.1:1,0:0.1:1); z = rand(11,11,24); minColorLimit = min(min(...
9 mesi ago | 1
| accepted
How to converting cell to matrix for image based classification?
Hi Nikhat Ali, Please have a look into documentation fitcecoc(). The way you call the function is not working since data format...
9 mesi ago | 0
| accepted
Matrix of transfer functions
Hi Davood Raoofsheibani, you can define arrays of transfer functions similar to numeric arrays by using tf(): % define array ...
10 mesi ago | 0
Convert a Complex Number to exponential real
Hi Jogger, have a look at Euler's formula (https://en.wikipedia.org/wiki/Euler's_formula). x = 2 + 1j * 5; r = sqrt(real(x)^2...
11 mesi ago | 1
| accepted
Different rotations of XLabels
Hi Julie, One way to rotate single XTickLabel Strings is to replace them by text(). Advantage over annotation() is that the tex...
12 mesi ago | 0
| accepted
How to shift entries in a vector by the value of the number in that entry?
Hi Tim David, you can apply circshift() to the data. T = [0, 0, 4, 0, 7, 0, 0, 5, 0, 9]; shiftme = @(A,nShift) circshift(A,...
circa un anno ago | 0
use vector as input
Hi Vincent Degonda, Your for-loop call is not providing what you expected. Your input variable is a vector already. dpb tried t...
circa un anno ago | 0
Pass a structure to a function
Hi George Bashkatov, First of all: Do not use global variables if not absolutely necessary. There are hundreds of threads argui...
circa un anno ago | 0
Does Matlab solver allow integration?
Hi Craig Dekker, please, have a look at the documentation symbolic int(): syms t L R Vo WR = R*((Vo/R)*exp(-t/(L/R)))^2 iWR ...
oltre un anno ago | 0
| accepted
How to keep decimal float point only
If it is just for display you can specify the output format in fprintf. a = 323.153; fprintf('<< a = %.0f.\n',a) output: << ...
oltre un anno ago | 0
| accepted
How to join a double variable and a strucure variable to plot a heat map ?
Dear Niraj Bal Tamang, According to documentation heatmap() supports tables among others. Working with tables is very convenien...
oltre un anno ago | 0
| accepted
plot repeating x values
Hi Christopher Tran Rojas, you have to replace the xTickLabel-Strings. Otherwise an increasing value vector is expected. Plus, ...
oltre un anno ago | 0
Frequency domain and Shannon limit
Hi long le, Matlab documentation is quite nice since it provides several examples on key topics. One possibility to transform t...
oltre un anno ago | 1
Catching a warning to avoid matrix singularity
Hi Mostafa Nakhaei, quite similar to what you describe is shown in the documentation: https://de.mathworks.com/help/matlab/ref/...
oltre un anno ago | 1
| accepted
How can I get an upright mu in math with latex interpreter?
Hi Philipp Rehlaender, It seems, there is no straight-forward way to do that in matlab figures. Nonetheless, there are work-aro...
oltre un anno ago | 0
