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ME


452 total contributions since 2016

Working in mathematical biology.

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Answered
Plotting graph using roots
The roots you have calculated are the x values where y = 0. Therefore to plot these on a graph you can use: p = [1 5.5 3.5 -10]...

1 day ago | 1

| accepted

Answered
Array indices must be positive integers or logical values.
I just ran this segment of code and I get the same "Array indices must be positive integers or logical values." error but for th...

4 days ago | 0

| accepted

Answered
BAR graph not working
Is that the exact piece of code you used? On my computer (and Matlab version R2018a) that runs absolutely fine.

4 days ago | 0

Answered
iterate through elements of matrix
Chuguang Pan answer is correct but is in the comments section rather than the answers section. This won't be able to be accepted...

4 days ago | 0

Answered
Trying to change colours on the the same plot, but getting error message 'There is no b property on the Line class'
The issue with your plotting command is that matlab is interpreting the 'b',1 part as a pair of commands (i.e. ste the property ...

4 days ago | 0

| accepted

Answered
Elementwise Matrix multiplication with a Vector to get a higher dimension Matrix
I think this should do the trick. A1 = [1 2 3; 4 5 6; 7 8 9]; Asize = size(A1); V1 = (1:1:3); lengthV1 = length(V1); A2 = z...

5 days ago | 1

| accepted

Answered
200 pixel to mm
There will definitely be a correlation between number of pixels and size/area, however I don't think you can use it for quantita...

5 days ago | 0

Answered
Finding a trendline from a scatter plot
MATLAB can do this if you make your scatter plot and then in the figure window go to "Tools -> Basic Fitting". That will then al...

6 days ago | 1

| accepted

Answered
Problems using parfor due to way variable is used
I think the answer to the below question might be of use to you here. https://uk.mathworks.com/matlabcentral/answers/404809-how...

6 days ago | 0

Question


Adjust z-axis location for a pcolor() plot
I am attempting to vertically stack a number of pcolor plots within the same set of axes and then overlay some contour lines ont...

6 days ago | 0 answers | 0

0

answers

Answered
add to a vector by plus 1 and plus 2
I think this should do what you are after X = [1;2;3]; for i=1:3 X(i) = X(i)+i; end Another way would be to do: X = [1;2;3...

6 days ago | 0

Answered
load .mat files into a loop
You could store the filenames for your arrays into an array (possibly cell array might be better if they aren't all the same num...

9 days ago | 1

| accepted

Answered
How to plot a matrix with reoccurring values?
Take for example a matrix: vals = [1 1;2 1;2 2; 1 2; 1 3; 2 3; 2 4; 1 4]; which is of the form you describe above. Then do: p...

9 days ago | 1

| accepted

Answered
Problem finding the index?
The problem is the precision which which your machine is able to store numbers. You are asking MATLAb to find an exact match to ...

9 days ago | 0

| accepted

Answered
Finding index (x value) of noisy data crossing a threshold value
idx = find(SmoothedData > Threshold); Width = Xdata(max(idx)) - Xdata(min(idx)); Here the first line finds all indices of poin...

11 days ago | 0

Answered
How to change Marker Color in line graph?
Can you try the below and let us know what happens please? I don't have the necessary toolboxes to check it myself. load('MCA_D...

13 days ago | 0

| accepted

Answered
How Change Matrix Shape / Setting
Not necessarily a pretty solution but the below will do what you want for the given table. Should give you enough of an idea of ...

13 days ago | 1

| accepted

Answered
How to rewrite the maximum element of an array by an avarage
So, if I have interpreted your question correctly then you have an array (say A) and you wish to find the maximum valued element...

13 days ago | 0

| accepted

Answered
Concatenate 8X4 matrix in 16X2 matrix in matlab
This should do it: B = [A(:,1:2); A(:,3:4)]

13 days ago | 1

| accepted

Answered
HELP NEEDED_ODE45MATLAB
Your problem here is that you haven't passed your parameters into the function. The line: function dY=ODEfun(t,Y,a,b,c,E,h1,N,D...

13 days ago | 0

Answered
Why don't you draw the line of vectors on the graph?
I think this is because you are plotting inside your while loop. Here you are telling it to plot one data point each time and so...

13 days ago | 0

| accepted

Answered
How can I use one matrix to assign values to a second matrix using a for loop?
Based on your definition there is nothing to diffuse. If the values is the same all along your domain then there won't be any ch...

16 days ago | 1

| accepted

Answered
Find zeros of numeric function
You could use fzero for this. Only issue is that it returns the zero closest to a chosen start point, therefore I've put a loop ...

16 days ago | 0

| accepted

Answered
Plotting a matrix in a for loop.
You have a couple of options here. One is that you store all of the steps of the Markov chain during the for loop and then plot ...

18 days ago | 0

| accepted

Answered
change scale for colorbar
Have you tried looking at the below link - seems like that might do what you want https://uk.mathworks.com/matlabcentral/answer...

18 days ago | 0

Answered
problem in maximizing figure window in matlab 2016a
If you are using R2018a or after then you can use f = figure; f.WindowState = 'maximized'; to maximise the figure window. To ...

18 days ago | 0

Answered
White lines in 2D figure when exporting it
There isn't an accepted answer, but the following question has a lot of potential pointers that might be of use. https://uk.mat...

18 days ago | 0

| accepted

Solved


Get the area codes from a list of phone numbers
Given a string of text with phone numbers in it, return a unique'd cell array of strings that are the area codes. s = '508-6...

20 days ago

Solved


Connect Four Win Checker
<http://en.wikipedia.org/wiki/Connect_Four Connect Four> is a game where you try to get four pieces in a row. For this problem, ...

20 days ago

Solved


Test for balanced parentheses
Given the input inStr, give the boolean output out indicating whether all the parentheses are balanced. Examples: * If ...

20 days ago

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