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Scott MacKenzie


York University

Last seen: Today Active since 2020

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Answered
Producing the same-sized box plots for subfigures
One approach is just to use a dummy y-axis label for the plots in the 2nd and 3rd columns: if mod(i,3)==1 ylabel('Data'); ...

alrededor de 4 horas ago | 0

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Answered
Skipping a line no delimiters in an array
If you know the rows you want to read, then here's one approach. As an example, test2.xlsx (attached) looks like this: Here'...

alrededor de 7 horas ago | 0

Answered
Plotting time series of Velocity over 48 hours
% test value for Ttide (not given in question) Ttide = 1; figure(1); Vm=5.07; % Calculated on Paper %t=[1:1:48]; % Time ...

1 día ago | 0

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Answered
How to find the common dates between two different variables that are not the same size or format?
% load dt and dt2, as per question load test % ignore minutes and seconds dt = dateshift(dt,'start','hour'); dt2 = datesh...

1 día ago | 0

Answered
Array indices must be positive integers or logical values.
You've got a typo in your code. Change the indices 1i to i

1 día ago | 1

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Answered
Round all values in table
I think this achieves what you are after: % test data T1 = array2table(rand(5)) % rounded to 2 decimal places T2 = array2tab...

1 día ago | 1

Answered
Generate pure tone sequence in frequence domain
Seems you want to start by specifying your signals in the frequency domain, then convert to the time domain. I think this does ...

1 día ago | 0

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Answered
Trying to find a value at a specific point in an array.
Just use H(Tmax) BTW, the value is 28106.

3 días ago | 0

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Answered
Specify the path of X and Y axis (MATLAB)
After your plot command, add set(gca, 'xlim', [0 1], 'ylim', [0 1]);

3 días ago | 0

Answered
Unable to use a value of type string as an index
Inside your loop, change catbl1(catbl1=x)=div*c; to catbl1(catbl1==x)=div*c;

4 días ago | 1

Answered
Removing quotations from table display
Seems like you just want a more visually appealing presentation for the user. Something like this might work: vNames = {'a' 'a...

5 días ago | 0

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Answered
from a circle to polygon
I know of no such formula, although no doubt one could be put together. You can think of circle as a polygon with a large (in...

5 días ago | 0

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Answered
find the lowest value in a selection of data
[m, idx] = min(T(S1,6)); % minimum value in column 6, as per S1 x = T(idx,5); % value in column 5 at same location/r...

6 días ago | 0

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Answered
Says "error using plot, vectors must be the same length"
Just a simple mistake. Change the 3rd line to xx1=linspace(0,8.*pi,100); Or, for higher resolution, change all the linspace f...

6 días ago | 1

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Answered
Replacing some elements in the row with maximum value along the row
There might be a simpler solution, but this seems to work: A=[1 2 3 0 0; 7 4 5 1 0; 2 4 6 0 3] for i=1:size(A,1) A(i,...

8 días ago | 1

Answered
How to prevent Matlab from rounding numbers when it saves them to a variable?
The rounding you are observing occurs through the num2str function. You can control this using one of the other variants of num...

8 días ago | 0

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Answered
plotting 2 time series with errorbars along double y axis
I think this is more-or-less what you are after, based on the figure posted: % test data x = 1:10; A = [2 8 6 11 18 19 16 22 ...

9 días ago | 0

Answered
How to plot x and y error bars together with the data points?
Something like this seems to work: % test data x = randi([2 8],1,5); y = randi([2 8],1,5); error_x = rand(1,5); error_y = r...

9 días ago | 0

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Answered
The loop is continuously running
Your loop is fine, but is inefficient and takes a long time to execute. Instead of the loop, try this: [Lia, Locb] = ismember(T...

10 días ago | 0

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Answered
How to grow a vector in a loop?
One approach is to declare coeff as an empty array before the first for-statement: coeff = []; then add new values to the end ...

12 días ago | 0

Answered
How to create randi function between 0-500
Just use the imin-imax version of randi. For example n = randi([0, 500], 50, 1); generates a column vector of random integers...

12 días ago | 0

Question


Using F1 for help, gives help for wrong function
Consider this code snippet: plot(x, y1); % 2D line plot hold on; plot(x, y2); % 2D line plot plot(p); % polyshape plo...

20 días ago | 1 answer | 0

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answer

Answered
Filling in missing data with previous data to perform calculations
Since you define bad or erroneous data as values equal to 500 or values less than 60, how about this. Replace the erroneous val...

28 días ago | 1

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Answered
p value for two sets having variable x and y
Since for each system, y is the measured response for x, you can reduce the data for that set to x-y. Also, since the systems u...

alrededor de 1 mes ago | 0

Question


ranksum function is purportedly the same as the Mann-Whitney U test, but the results differ. Is there a reason why?
I've written a script to implement the Mann-Whitney U non-parametric test. As a guide, I used a data set (attached) and example...

alrededor de 1 mes ago | 0 answers | 0

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answers

Answered
How do you print the F-stat in a multcompare test?
@Darla Bonagura There is no F-statistic for post hoc pairwise comparisons tests such as Bonferonni, Scheffe, and so on. There i...

alrededor de 1 mes ago | 0

Answered
Replacing Empty Cells by NaN
You can use fillmissing and specify the fill value for each column. Obviously, the fill values depend on the data type in the c...

2 meses ago | 0

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Answered
Remove dimension from high dimensional array
Try this... M = rand(10, 8, 10, 8, 6, 7, 8, 9); whos M(:,:,:,:,2:end,:,:,:) = []; N = squeeze(M); whos

2 meses ago | 0

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Answered
Repeat a cumulative sum in a matrix
Here's a way to do this without a loop: % test data (monthly returns for many investments for 252 months) M = rand(2784,252); ...

2 meses ago | 1

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Answered
How can I change the interval on the y-axis?
Here's some example code on how to control the "ticks": x = 1:5; y = randi(100, 1, 5); plot(x,y); set(gca, 'ylim', [0 100]...

2 meses ago | 0

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