Answered
Find the number of outputs of a value.
@Zach Adams, first, more feedback. Please take some time to digest that. Second, I've improved your code without changing the ...

7 years ago | 0

| accepted

Answered
Remove specific objects from an image
Following similar logic to this answer, we'll use regionprops to get the length and width of the bounding box rectangles. Then ...

7 years ago | 3

| accepted

Answered
Find the orientation of each arbitrary object in an image
I used this question to practice some of my image processing skills (still in early stages of exploration). Here's what I did...

7 years ago | 1

| accepted

Answered
Finding bit's postions in cell
The data in your question contains what appears to be a cell array of strings (or character arrays) where each string represents...

7 years ago | 0

Answered
color bar related issue
By 'gray', I assum you mean the gray colormap. Here are a few interpretations. The first example creates the entire range of...

7 years ago | 0

Answered
Define an if statement based on on finding duplicate xy pair values between arrays.
(continuing from the comment section under the question) I recommend you use ismembertol() which allows you to set a small tole...

7 years ago | 0

| accepted

Answered
How to find files with a given pattern in multiple folders
Simply throw in an additional wildcard (*) here: (I've only added 1 character: *) % Specify the file pattern. % Note the ...

7 years ago | 0

| accepted

Answered
How to plot a graphic with different markers in a scatter plot?
"I want to plot each "9 dots" in the graphic with different markers." Use group-scatter gscatter(x,y,g,clr,sym,siz). Each coor...

7 years ago | 0

Answered
Why am I not getting a vector output?
That's because you're only asking for a single output (by default). If you want both outputs, you must include two outputs in y...

7 years ago | 0

| accepted

Answered
How to turn NaN values in only numerical columns into -999?
When you create your table, the missing values in the Header4 column will not appear as NaNs since that column contains characte...

7 years ago | 0

| accepted

Answered
Remove unwanted vectors from a vector plot
To eliminate any quiver arrow that start below a given threshold along the y-axis, % 1) Choose a threshold yThreshold = 100; ...

7 years ago | 0

| accepted

Answered
How to plot second graph with second axis with animated line?
Add the animatedline object after you define the 2nd axis with yyaxis. Then you can set the color of the animated object to the...

7 years ago | 2

| accepted

Answered
How to create a skewed distribution that is truncated?
(continuing from the comments under the question) One solution is to just truncate the distribution yourself by producing the d...

7 years ago | 1

| accepted

Answered
Graphing Base Form of y=mx+b from a .csv file
I'm assuming you've read the data into Matlab and you've got a cell array of strings or character arrays named "data" that appe...

7 years ago | 1

| accepted

Answered
Get position when using uicontextmenu
Instead of a context menu, use a ButtonDownFcn that responds to a mouse click on the object. It's lighter weight than a context ...

7 years ago | 1

| accepted

Answered
concatenate structs and then plot a specified column
Use dir() to list all files in the directory. Loop through each file and load in the variable using load(filename,variables) ...

7 years ago | 0

Answered
How can I plot datetime as x-axis in pcolor ?
There must be imaginary data in your inputs. Here's a demo with valid datetime inputs. dt = [datetime('yesterday'),datetime('t...

7 years ago | 1

| accepted

Answered
Array indices must be positive integers or logical values.
The error is here % For position in the column vector x = (a + (i-1).*h)'; alphax = alpha(x); You're indexing alpha using ve...

7 years ago | 0

| accepted

Answered
Check edit text for a symbol
The "String" property of your editbox contains the content of the text. You can use strcmpi() to determine whether the text box...

7 years ago | 0

| accepted

Answered
why 'colormap' did not change the color of my plots?
If you want to change the color of the lines based on a colormap, you can apply those colors to the "ColorOrder" property of the...

7 years ago | 2

| accepted

Answered
Extracting data from excel spreadsheet
This solution reads in the data using readmatrix() and stores the headers (row 1) and row-definitions (col 1) in separate variab...

7 years ago | 0

| accepted

Answered
Create a plot with a text file containing a matrix
Assuming time varies by row and user varies by column, here's a demo you can follow. % Create a matrix of measurements of users...

7 years ago | 0

Answered
How to display the contents of a cell in a messagebox
compounds = {'CaCO3','CO2','CuSO4','C6H12O6','HCI','NaCl'}; msg = msgbox(['Compounds: ', strjoin(compounds,', ')],'title') ...

7 years ago | 1

| accepted

Answered
Replace numbers without using find()
A(A>150 & A<200) = NaN; I interpret "between" as not inclusive. If you want inclusive, A(A>=150 & A<=200) = NaN;

7 years ago | 1

| accepted

Answered
Plotting a patch hides all scatter data in figure
Works for me (see below). The marker size in your question is quite small (0.5) but with 4096 points, you should see something....

7 years ago | 0

| accepted

Answered
randomly grouping cells in cell array
No need for a loop. % create 22 names of people (just letters) names = num2cell(char(97:118)); % {'a' 'b' 'c' ... 'v'} n...

7 years ago | 1

| accepted

Answered
Plot text on line with angle
"I'm looking for the following in relation to plotting text," 1) I want to plot text on top of a line or curve for any given fu...

7 years ago | 1

Answered
Timetable with string array
As the error indicates, you cannot retime non-numeric data. Your table contains a column "participant" which contains strings. ...

7 years ago | 1

| accepted

Answered
Create plot with multiple overlayed lines, where colorbar corresponds to color of line
In addition to Hans' method, you can also apply the colorbar based on whatever line colors are already set up in the "ColorOrder...

7 years ago | 2

Answered
How to find the coordinates of a point perpendicular to a line (knowing the distance)?
Here's a tutorial with comments so you can follow what's going on. The end points of the perpendicular segment ("D" in your phot...

7 years ago | 2

| accepted