Community Profile

# Ive J

##### Last seen: Today
81 total contributions since 2013

Computational biologist.

View details...

Contributions in
View by

Capitalize only the first letter of a character
str = "dogs are better than cats"; regexprep(str ,'(\<\w{1})', '${upper($1)}') "Dogs Are Better Than Cats"

ungefär 7 timmar ago | 0

comparing probability with random draw and choose a transition state
You can construct events by a simple element-wise comparison: events = R < P; event2_num = sum(events, 2); event1_num = sum(...

2 dagar ago | 0

Making a 1D array/vector from a table
X = cell2mat(X_cell); % X_cell: your original cell myVec = X(X(:, 3) == 0, 1);

2 dagar ago | 1

| accepted

Reading a matrix from a .txt file
Try this myMat = readmatrix('myfile.txt', 'delimiter', ' ');

8 dagar ago | 1

| accepted

Reversing the order of EVEN rows in an array
d(2:2:end, :) = fliplr(d(2:2:end, :));

8 dagar ago | 0

| accepted

Error When Using Writetable
test2 variable is the one causing this error. If you want that empty column in your output XLSX file: Table_WLS.test2 = repmat(...

9 dagar ago | 0

| accepted

Table Mean and Standard Deviation
try this head(x) z1 z2 z3 z4 __ __ __ _______ 7 2 4 0.88646 4 1 ...

12 dagar ago | 0

variance explained & pca
pareto only shows the first 10 bars at maximum. You can do it easily with help of cumsum: [~, ~, ~, ~, explained] = pca(rand(10...

12 dagar ago | 1

| accepted

How can I code the given representations to the labels? (Hats confused me a bit.)
You can find full list of symbols/letter here. But for \hat{x} you can do as: plot(1:10, 1:10, '.-') title('$$\vert$$\hat{y}...

13 dagar ago | 1

| accepted

Extract ¨multiple .xls file from a folder?
If you want to extract the content of all your .xls files within a certain directory at once, you can do it as: % assuming you'...

13 dagar ago | 0

| accepted

Search string array column for a specific string
Have you tried ismember? You only need column 5, but you fed first argument of strcmp with the whole string array. rowIdx = fin...

14 dagar ago | 0

| accepted

minimum output matrix from data
A=[ 0 2.8284 5.6569; 2.8284 0 2.8284; 5.6569 2.8284 0; 1.4142 3.162...

15 dagar ago | 0

how to select multiple rows from a large matrix and leave 1 row every time
A = rand(20, 100); keepRowsIdx = setdiff(1:size(A, 1), 4:4:size(A, 1)); Columns 1 through 10 1 2 3 5 ...

15 dagar ago | 0

| accepted

You must pass X as a floating-point matrix.
Your TestSet must have the same structure as your Training set. You can try this result = predict(SVMmodel, Labels(:, 1:9));

19 dagar ago | 0

| accepted

How to create a new parameter in one table based on multiple observations in a second table?
Let's call you first able tabc and the latter tabd. What you bascially need is to first select patients with true events, and th...

19 dagar ago | 1

| accepted

Replace some values of a vector with values from another vector of the same size
You've missed the fact that k is of logical class: A = [0 0 -3 -8 -10 0 0] B = [-12 -12 -4 -4 -4 -12 -12] k = (A < B) C = A ...

19 dagar ago | 0

| accepted

Problems with creating a dynamic struct with num2str
First of all you cannot choose a digit as filed name due to the same reason you cannot choose it as a variable name. for i = 1:...

22 dagar ago | 1

| accepted

Change significance value in ttest2
I found a question asked here saying that trying ranksum should give the same p value as ttest2 ... No, it doesn't say that. ...

23 dagar ago | 0

Summation of specific range of matrix
n = size(Q_all, 1)/56; Q_aus = (0); for i = 1:44 Q_aus(i, 1) = sum(sum(Q_all(56*i-55:56*i,:),2)); end

23 dagar ago | 0

| accepted

How to create two independent Normal distribution ?
You basically can generate multiple independent normal random variables form a multivariate normal dist. You just need to define...

23 dagar ago | 1

| accepted

Comparing data in a matrix/table
One way would be to use groupsummary: tab = a1 a2 a3 a4 ________ ________ __ __ ...

24 dagar ago | 1

Rename 10000 Text files
files = {'tab1.txt', 'tab2.txt'}; target = replace(files, 'tab', ''); cellfun(@(x, y)movefile(x, y), files, target)

24 dagar ago | 0

help with regexp on txt file
str = '16/12/2020 18:30:59.443 Ico 3 Vco 1e7 Ico -3.2e+8 Vco 1.12e-7 Ico -3200 Vco 2.345e14'; regexp(str, '(?<=(Vco|Ico)...

24 dagar ago | 1

| accepted

Changing color of a certain cell in a matrix after breaking a for-loop
You could overlay red rectangles on those cells passing the predefined cutoff (if you wanna stick with the summer colormap). ...

28 dagar ago | 0

Writing Matlab Table to File
First of all, you are using fprintf incorrectly, and thankfully all MATLAB errors are quite intuitive. This one tells you, you'v...

29 dagar ago | 0

Why I get 1×0 empty double row vector?
xq1 (and therefore X1) simply may don't contain min(oh1) since you are discretizing [0, max(oh1)]. What you can do is to find th...

29 dagar ago | 0

| accepted

EMBL RESTful API post request error
You are almost there, except that MATLAB doesn't have a dictionary data type as Python3 has, so you should construct a struct in...

29 dagar ago | 1

| accepted

Error using plot Vectors must be the same length.
The error is quite clear, 0:200 size doesn't match that of K. numel(0:200) is 201 while numel(K) is 199. It's better to replace ...

ungefär en månad ago | 0

| accepted

Move multiple rows without swapping
H = randi([0 1], 6, 10) H = 0 1 0 1 1 0 0 0 1 0 1 1 1 0 1 ...

ungefär en månad ago | 0

| accepted